Abrégé

The present invention relates to a resin composition and a manufacturing method, which are capable of obtaining a thiourethane-based optical material by reacting a polythiol compound having three or more mercapto groups and a polyisocyanate compound, and, specifically, to a resin composition and a manufacturing method, which are capable of manufacturing a high-quality ultrahigh-refractive-index thiourethane-based optical material by controlling a polymerization rate through an additive while reducing an effect according to the quality of a polythiol compound so as to lower manufacturing costs. The present invention provides a resin composition for a thiourethane-based optical material, comprising: (a) a polythiol compound having three or more mercapto groups; (b) a polyisocyanate compound; and (c) a catechol compound represented by chemical formula 1, wherein the catechol compound is included in an amount of 0.05-5 wt% on the basis of 100 wt% of the composition, the amount being the sum of (a), (b) and (c). The present invention can manufacture a high-quality ultrahigh-refractive-index thiourethane-based optical material while simplifying a process for producing a polythiol compound that has three or more mercapto groups and reducing production costs, and thus can be widely used in the optical lens field.

Classes IPC  ?

• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/32 - Composés polyhydroxylésPolyaminesHydroxyamines
• C08G 18/73 - Polyisocyanates ou polyisothiocyanates acycliques
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a benzotriazole-based compound which improves the light resistance of a highly refractive episulfide-based optical material, a composition for an episulfide-based optical material, comprising same, and an optical material. The present invention provides a composition for an episulfide-based optical material, the composition comprising an episulfide compound represented by chemical formula 1, a benzotriazole-based compound represented by chemical formula 2, and a polymerization catalyst. The benzotriazole-based compound of chemical formula 2 addresses the problem of deterioration in light resistance that occurs in optical lenses of a highly refractive episulfide-based optical material and the like, and can improve the transparency of lenses. In the present invention, by comprising a small amount of the benzotriazole-based compound in the composition for an episulfide-based optical material, an episulfide-based optical material having good light resistance and transparency can be obtained.

Classes IPC  ?

• C08G 75/06 - Polythioéthers à partir de thioéthers cycliques
• C08K 5/3475 - Cycles à cinq chaînons condensés avec des carbocycles
• C08K 3/06 - Soufre
• C08K 5/37 - Thiols
• C08K 5/29 - Composés contenant des liaisons doubles carbone-azote
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a composition for an optical material in which a rapid curing phenomenon that occurs during polymerization in an episulfide-based high refractive optical material is suppressed, and to a method for manufacturing an optical material using same. Provided in the present invention is a composition for an episulfide-based high refractive index optical material comprising an episulfide compound represented by formula 1, a 2,3-epoxypropyl (2,3-epithiopropyl) sulfide compound, a catechol compound, and a quaternary phosphonium salt as a polymerization catalyst. The composition of the present invention can prevent a sudden increase in viscosity during polymerization in an episulfide-based high refractive index optical material and maintain a constant curing rate, and thus can be used as a high-quality lens material free of polymerization imbalance issues.

Classes IPC  ?

• C07D 331/02 - Cycles à trois chaînons
• C07D 409/12 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes de soufre comme uniques hétéro-atomes du cycle contenant deux hétérocycles liés par une chaîne contenant des hétéro-atomes comme chaînons
• C08G 75/06 - Polythioéthers à partir de thioéthers cycliques
• C08K 3/06 - Soufre
• C08K 5/37 - Thiols
• C08K 5/29 - Composés contenant des liaisons doubles carbone-azote
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to: a composition for an optical material, in which a rapid curing phenomenon occurring upon polymerization of a highly refractive episulfide-based optical material is restrained; and a method for manufacturing an optical material by using same. The present invention provides a composition for a highly refractive episulfide-based optical material, which comprises: an episulfide compound represented by chemical formula 1; a 2,3-epoxypropyl(2,3-epithiopropyl)sulfide compound; a catechol compound; and a quaternary phosphonium salt as a polymerization catalyst. The composition of the present invention can be prevented from the rapid viscosity increase occurring upon polymerization of a highly refractive episulfide-based optical material and can maintain a constant curing rate, thereby being available as a material for a high-quality lens having no polymerization imbalance problem.

Classes IPC  ?

• C08G 75/06 - Polythioéthers à partir de thioéthers cycliques
• C08G 75/14 - Polysulfures
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a composition for an episulfide-based high refractive optical material and a method for manufacturing an optical material using same and, in particular, to a composition for an episulfide-based high refractive optical material having a refractive index in the range of 1.71 to 1.77 that contains sulfur without using a polymerization regulator, such as tin halide, but does not have color deterioration or a polymerization imbalance, and does not have deterioration of thermal stability, light resistance, and releasability, and a method for manufacturing an optical material using same. The present invention provides a composition for an episulfide-based high refractive optical material having a refractive index in the range of 1.71 to 1.77 comprising: 70- 92% by weight of an episulfide compound represented by chemical formula 1; 4-20% by weight of a polythiol compound; 2-9% by weight of solid sulfur; 0.01-5% by weight of an isocyanate compound; and 0.05-2% by weight of one or more polymerization catalysts selected from quaternary phosphonium salt and a tertiary amine compound.

Classes IPC  ?

• C08G 75/06 - Polythioéthers à partir de thioéthers cycliques
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/18 - Catalyseurs contenant des amines secondaires ou tertiaires ou leurs sels
• C08K 3/06 - Soufre
• C08K 5/372 - Sulfures
• C08K 5/17 - AminesComposés d'ammonium quaternaire
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a novel episulfide compound, a composition containing same for an episulfide-based optical material, and a method for manufacturing an optical material, wherein the novel episulfide compound is contained at a small amount in the composition for an episulfide-based optical material to be capable of improving light fastness, heat resistance, and transparency of the optical material. The present invention provides a composition for an episulfide-based optical material, comprising an episulfide compound represented by chemical formula 2, an episulfide compound represented by chemical formula 1, a polythiol compound, and a polymerizing catalyst.

Classes IPC  ?

• C07D 409/12 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes de soufre comme uniques hétéro-atomes du cycle contenant deux hétérocycles liés par une chaîne contenant des hétéro-atomes comme chaînons
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

In the present invention, sealing tape is wrapped around the outer circumferential surface of an introduced mold, and a monomer solution is injected into a cavity formed therein, wherein the injection amount of the monomer solution can be precisely controlled by using a vision recognition system. According to a preferable embodiment, a monomer solution (S) of a monomer solution tank (10) is suctioned, in advance, into a syringe (20) capable of adjusting a capacity corresponding to a cavity of a mold (M); most of the monomer solution (S), which has been injected into the syringe (20), is firstly injected into the mold (M) at a high injection flow rate or injection speed; while the residual amount of the monomer solution (S) is secondly injected at a reduced injection flow rate or injection speed, it is finally confirmed, by using a vision recognition system, whether the monomer solution (S) is filled in the mold (M); and then injection is finished.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• G01N 21/17 - Systèmes dans lesquels la lumière incidente est modifiée suivant les propriétés du matériau examiné

Abrégé

In the present invention, a tape is wrapped around the outer peripheral surface of an injected mold, and a monomer solution is injected into a cavity formed therebetween, wherein the oil level change of the monomer solution injected into the cavity is filmed using a vision recognition system such that the injection flow rate or injection speed of the monomer solution can be minutely controlled using the vision recognition system, and while a controller controls the injection flow rate or injection speed of a monomer injector at each step according to the monomer solution oil level change filmed by the vision recognition system, the monomer solution can be injected to fill in the cavity.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B29C 39/24 - Alimentation en matière des moules
• B29C 39/44 - Mesure, commande ou régulation
• G01N 21/17 - Systèmes dans lesquels la lumière incidente est modifiée suivant les propriétés du matériau examiné

Abrégé

The present invention relates to a highly refractive episulfide-based optical material stabilizer which can resolve striae, color and thermal stability issues that arise in highly refractive episulfide-based optical material, an optical material composition comprising the highly refractive episulfide-based optical material stabilizer, and a method for producing the optical material. The present invention provides an episulfide-based optical material stabilizer comprising the episulfide compound expressed by chemical formula 1. Moreover, provided is an episulfide-based optical material composition comprising the episulfide compound expressed by chemical formula 2, the stabilizer, and the like. By including the stabilizer in the episulfide-based optical material composition, the present invention can resolve, by means of a relatively simple method, the issues of striae, color and thermal stability that occasionally arise in highly refractive episulfide-based optical lenses.

Classes IPC  ?

• C08K 5/45 - Composés hétérocycliques comportant du soufre dans le cycle
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08K 3/06 - Soufre
• C08G 18/16 - Catalyseurs
• C08G 18/18 - Catalyseurs contenant des amines secondaires ou tertiaires ou leurs sels
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a highly refractive episulfide-based optical material stabilizer which can resolve striae, color and thermal stability issues that arise in highly refractive episulfide-based optical material, an optical material composition comprising the highly refractive episulfide-based optical material stabilizer, and a method for producing the optical material. The present invention provides an episulfide-based optical material stabilizer comprising the episulfide compound expressed by chemical formula 1. Moreover, provided is an episulfide-based optical material composition comprising the episulfide compound expressed by chemical formula 2, the stabilizer, and the like. By including the stabilizer in the episulfide-based optical material composition, the present invention can resolve, by means of a relatively simple method, the issues of striae, color and thermal stability that occasionally arise in highly refractive episulfide-based optical lenses.

Classes IPC  ?

• C08K 5/45 - Composés hétérocycliques comportant du soufre dans le cycle
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02C 7/04 - Lentilles de contact pour les yeux
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08K 3/06 - Soufre
• C08G 18/16 - Catalyseurs
• C08G 18/18 - Catalyseurs contenant des amines secondaires ou tertiaires ou leurs sels
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain

Abrégé

The present invention relates to a highly refractive episulfide-based optical material stabilizer which can resolve striae, color and thermal stability issues that arise in highly refractive episulfide-based optical material, an optical material composition comprising the highly refractive episulfide-based optical material stabilizer, and a method for producing the optical material. The present invention provides an episulfide-based optical material stabilizer comprising the episulfide compound expressed by chemical formula 1. Moreover, provided is an episulfide-based optical material composition comprising the episulfide compound expressed by chemical formula 2, the stabilizer, and the like. By including the stabilizer in the episulfide-based optical material composition, the present invention can resolve, by means of a relatively simple method, the issues of striae, color and thermal stability that occasionally arise in highly refractive episulfide-based optical lenses.

Classes IPC  ?

• C08K 5/45 - Composés hétérocycliques comportant du soufre dans le cycle
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08K 3/06 - Soufre
• C08G 18/16 - Catalyseurs
• C08G 18/18 - Catalyseurs contenant des amines secondaires ou tertiaires ou leurs sels
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a stabilizer for episulfide-based optical material having a high refractive index, a composition for optical material using same, and a method for producing optical material, the stabilizer allowing the issues of striae and thermal stability that arise in the episulfide-based optical material having a high refractive index to be resolved. The present invention provides a stabilizer for episulfide-based optical material, the stabilizer comprising the episulfide compound expressed by chemical formula 1. Additionally, provided is a composition for episulfide-based optical material, the composition comprising the episulfide compound expressed by chemical formula 2. The present invention includes the stabilizer in episulfide-based optical material having a high refractive index, and thus, by means of a comparatively simple method, the occasional issues of striae and thermal stability that arise in the episulfide-based optical material having a high refractive index can be resolved.

Classes IPC  ?

• C08K 5/45 - Composés hétérocycliques comportant du soufre dans le cycle
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates
• C08G 18/16 - Catalyseurs
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a stabilizer for episulfide-based optical material having a high refractive index, a composition for optical material using same, and a method for producing optical material, the stabilizer allowing the issues of striae and thermal stability that arise in the episulfide-based optical material having a high refractive index to be resolved. The present invention provides a stabilizer for episulfide-based optical material, the stabilizer comprising the episulfide compound expressed by chemical formula 1. Additionally, provided is a composition for episulfide-based optical material, the composition comprising episulfide compound expressed by chemical formula 2. The present invention includes the stabilizer in episulfide-based optical material having a high refractive index, and thus, by means of a comparatively simple method, the occasional issues of striae and thermal stability that arise in the episulfide-based optical material having a high refractive index can be resolved.

Classes IPC  ?

• C08K 5/45 - Composés hétérocycliques comportant du soufre dans le cycle
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates
• C08G 18/16 - Catalyseurs
• C08G 18/24 - Catalyseurs contenant des composés métalliques de l'étain
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a method for manufacturing an optical material by injecting an allyl diglycol carbonate monomer solution into a cavity formed between a pair of outer-sealed molds and, more specifically, to a method for automatic injection of an allyl diglycol carbonate monomer into molds, whereby while an allyl diglycol carbonate monomer solution is injected into the cavity, a predetermined amount of the ally diglycol carbonate monomer solution can be injected in a short time by using a vision recognition system. The present invention provides a method for automatic injection of an allyl diglycol carbonate monomer into molds, the method comprising the steps of: (a) preparing an allyl diglycol carbonate monomer composition having a solid-phase refractive index of 1.495-1.535 and a viscosity of 20-800 cps (25℃); (b) injecting most of the monomer composition into a cavity formed between a pair of outer-sealed molds; and (c) detecting the surface of oil by using a vision recognition system while the monomer composition is injected into the cavity following step (b), and then stopping the injection of the monomer composition when the surface of oil is detected at the set final injection point. According to the present invention, a predetermined amount of the allyl diglycol carbonate monomer solution can be automatically injected into the molds neither excessively nor insufficiently.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• C08G 64/30 - Procédés généraux de préparation utilisant des carbonates
• G02B 1/00 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques

Abrégé

The present invention relates to an automatic washing apparatus and an automatic washing method for automatically and continuously washing lenses and plastic molds for manufacturing optical lenses. The automatic washing method of the present invention comprises: a chemical washing step of placing molds or lenses in holders, and then spraying a chemical thereat at a predetermined pressure or more while rotating same at a high speed; a water washing step of placing, in holders, the molds or the lenses having passed through the chemical washing step, and then spraying water thereat at a predetermined pressure or more while rotating same at a high speed; and a step of placing, in holders, the molds or the lenses having passed through the water washing step, rinsing same with pure water, and then carrying out no-load rotation. According to the present invention, lenses and molds can be effectively washed even while using a minimal amount of water and washing solution.

Classes IPC  ?

• B29C 33/72 - Nettoyage
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B05B 13/04 - Moyens pour supporter l'ouvrageDisposition ou assemblage des têtes de pulvérisationAdaptation ou disposition des moyens pour entraîner des pièces les têtes de pulvérisation étant déplacées au cours de l'opération
• G02C 13/00 - AssemblageRéparationNettoyage
• B08B 3/08 - Nettoyage impliquant le contact avec un liquide le liquide ayant un effet chimique ou dissolvant
• B08B 5/02 - Nettoyage par la force de jets, p. ex. le soufflage de cavités

Abrégé

The present invention relates to a method for manufacturing an optical material by injecting an aryl-based monomer solution into a cavity formed between a pair of molds having sealed outer edges and, more particularly, to a method for automatically injecting a monomer for an aryl-based optical material into a mold, in which a vision recognition system is used to inject an aryl-based monomer solution into the cavity, so as to enable quantitative injection within a short time. The present invention provides a method for automatically injecting a monomer for an aryl-based optical material into a mold, the method comprising the steps of: (a) preparing a monomer composition for an aryl-based optical material, the composition having a solid state refractive index of 1.537 to 1.585 and a viscosity of 20 to 800 cps at 25°C; (b) injecting most of the monomer composition into a cavity formed between a pair of molds, outer edges of which are sealed; and (c) detecting, following step (b), a fluid surface by using a vision recognition system while injecting the monomer composition into the cavity and terminating the injection of the monomer composition when the fluid surface is detected to have reached a configured final injection point. According to the present invention, the monomer solution for an aryl-based optical material can be automatically injected into a mold in a quantitative amount neither insufficiently nor excessively.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• C08F 218/04 - Esters vinyliques
• C08F 222/40 - Imides, p. ex. imides cycliques
• C08F 290/06 - Polymères prévus par la sous-classe
• C08F 2/44 - Polymérisation en présence d'additifs, p. ex. plastifiants, matières colorantes, charges
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4

Abrégé

The present invention relates to a method for preparing an optical material by means of injecting a thiourethane-based monomer solution into a cavity formed between a pair of molds of which the outer edges have been sealed and, more specifically, to an automatic mold injection method, for a monomer for a thiourethane-based optical material, enabling a fixed amount of injection in a short time by means of a vision recognition system during the injection of the thiourethane-based monomer solution into the cavity. The present invention provides an automatic mold injection method for a monomer for a thiourethane-based optical material comprising the steps of: (a) preparing a monomer composition, for a thiourethane-based optical material, having a solid refractive index of 1.523-1.690 and a viscosity of 20-1,000cps (25°C); (b) injecting most of the monomer composition into a cavity formed between a pair of molds of which the outer edges have been sealed; and (c), in succession from step (b), detecting an oil level by means of a vision recognition system during the injection of the monomer composition into the cavity and, if an oil level is detected at a set final point of injection, ending the injection of the monomer composition. According to the present invention, a fixed amount of monomer solution for a thiourethane-based optical material can automatically be injected into a mold neither insufficiently nor excessively.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B29C 33/62 - Agents de démoulage, de lubrification ou de séparation à base de polymères ou d'oligomères
• G01N 21/17 - Systèmes dans lesquels la lumière incidente est modifiée suivant les propriétés du matériau examiné
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène

Abrégé

The present invention relates to a method for manufacturing an optical material by injecting episulfide-based monomer solution into a cavity formed between a pair of molds, the outer peripheries of which are sealed and, more particularly, to a method for automatically injecting an episulfide-based monomer for an optical material into a mold, wherein a vision recognition system is used while injecting episulfide-based monomer solution into the cavity such that a rated amount thereof can be injected within a short period of time. The present invention provides a method for automatically injecting an episulfide-based monomer for an optical material into a mold, the method comprising the steps of: (a) preparing episulfide-based monomer composition for an optical material having a solid-state refractive index of 1.650-1.820 and a viscosity of 15-900cps (25ºC); (b) injecting most of the monomer composition into a cavity formed between a pair of molds, the outer peripheries of which are sealed; and (c) sensing a fluid surface by using a vision recognition system while injecting the monomer composition into the cavity, following step (b), such that, if the fluid surface is sensed at a configured final injection point, injection of the monomer composition is ended. According to the present invention, a rated amount of episulfide-based monomer solution for an optical material can be automatically injected into a mold such that the solution is neither insufficient nor overflows.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B29C 33/60 - Agents de démoulage, de lubrification ou de séparation
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08G 59/30 - Composés diépoxydés contenant des atomes autres que le carbone, l'hydrogène, l'oxygène et l'azote
• C08G 59/40 - Macromolécules obtenues par polymérisation à partir de composés contenant plusieurs groupes époxyde par molécule en utilisant des agents de durcissement ou des catalyseurs qui réagissent avec les groupes époxyde caractérisées par les agents de durcissement utilisés

Abrégé

The present invention relates to a method for preparing an optical material by injecting an acrylic monomer solution into a cavity formed between a pair of externally sealed molds and, more specifically, to a method for automatically injecting, into a mold, an acrylic monomer for an optical material, the method enabling quantitative injection within a short time by means of a vision recognition system while injecting the acrylic monomer solution into the cavity. The present invention provides a method for automatically injecting, into a mold, an acrylic monomer for an optical material, comprising the steps of: (a) preparing an acrylic monomer composition for an optical material, having a solid phase refractive index of 1.50-1.63 and a viscosity of 20-1,000 cps (25°C); (b) injecting most of the monomer composition into a cavity formed between a pair of externally sealed molds; and (c) detecting the surface of oil by means of a vision recognition system while injecting the monomer composition into the cavity continuously from step (b), so as to terminate the injection of the monomer composition when the surface of the oil is detected at a set final injection point. According to the present invention, the acrylic monomer solution for an optical material can be automatically and quantitatively injected in a proper amount into a mold.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B29C 33/00 - Moules ou noyauxLeurs détails ou accessoires
• C08F 220/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• G01N 33/44 - RésinesMatières plastiquesCaoutchoucCuir

Abrégé

The present invention relates to an epoxy acrylic optical lens and, specifically, to: a resin composition for a high quality epoxy acrylic medium-refractive-index optical lens having a solid phase refractive index of 1.53-1.58, the composition having excellent thermal stability, light resistance, transparency, color, demoldability and compressive strength; and a preparation method therefor. The present invention provides a resin composition for an epoxy acrylic medium-refractive-index optical lens having a solid phase refractive index of 1.53-1.58, the composition comprising: 50-70 wt% of a bisphenol A epoxy acrylate having a hydrolyzable chlorine amount of 0.01-0.11 wt%; 21-45 wt% of methyl methacrylate; and 1-17 wt% of a reactive diluents. According to the present invention, the resin composition for an epoxy acrylic medium-refractive-index optical lens, having good thermal stability, light resistance, transparency, color and demoldability while improving compressive strength in a medium-refractive-index lens having a refractive index of 1.53-1.58 can be obtained by controlling the hydrolyzable chlorine amount of bisphenol A diglycidyl ether to be 0.11 wt% or less and adding a large quantity of MMA to the composition. The epoxy acrylic medium-refractive-index optical lens, according to the present invention, can be widely used in various fields by replacing conventional medium-refractive-index optical lenses.

Classes IPC  ?

• C08F 220/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08F 220/18 - Esters des alcools ou des phénols monohydriques des phénols ou des alcools contenant plusieurs atomes de carbone avec l'acide acrylique ou l'acide méthacrylique
• C08K 5/00 - Emploi d'ingrédients organiques
• C08K 5/5313 - Composés phosphiniques, p. ex. R2=P(:O)OR'
• C08K 5/5333 - Esters des acides phosphoniques
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• B29L 11/00 - Éléments optiques, p. ex. lentilles, prismes

Abrégé

The present invention relates to an epoxy acryl-based optical lens and, especially, to a resin composition for an epoxy acryl-based medium-refractive optical lens having favorable moldability, thermal stability, light resistance, and compressive strength, with a solid-state refractive index of 1.53-1.58, and to a preparation method therefor. Provided in the present invention is a resin composition for an epoxy acryl-based medium-refractive optical lens having a solid-state refractive index of 1.53-1.58, the resin composition containing: 50-70 wt% of bisphenol A epoxyacrylate having an epoxy group-containing compound content of 0.7 wt% or less, 21-45 wt% of methyl methacrylate, and 1-17 wt% of a reactive diluent. According to the present invention, an epoxy acryl-based medium-refractive optical lens having excellent moldability, thermal stability, and light resistance as well as high compressive strength, while maintaining transparency and Abbe's number in good condition can be produced at a low production cost, by controlling the content of the epoxy group-containing compound remaining in the preparation procedure of epoxy acrylate and allowing a large amount of MMA to be contained in the composition. The epoxy acryl-based medium-refractive optical lens according to the present invention can be widely used in various fields by substituting for an existing medium-refractive optical lens.

Classes IPC  ?

• C08L 33/06 - Homopolymères ou copolymères des esters d'esters ne contenant que du carbone, de l'hydrogène et de l'oxygène, l'oxygène, faisant uniquement partie du radical carboxyle
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08K 5/5313 - Composés phosphiniques, p. ex. R2=P(:O)OR'
• C08K 5/5333 - Esters des acides phosphoniques
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes

Abrégé

The present invention relates to an epoxy acrylic optical lens and, especially, to a resin composition for an epoxy acrylic middle-refractive optical lens having favorable moldability, thermal stability, light resistance, and compressive strength, together with a solid-state refractive index of 1.53-1.58, and to a preparation method for the resin composition. Provided in the present invention is a resin composition for an epoxy acrylic middle-refractive optical lens having a solid-state refractive index of 1.53-1.58, the resin composition containing: 50-70 wt% of bisphenol A epoxyacrylate having an acid value of 0.01-2.5; 21-45 wt% of methyl methacrylate; and 1-17 wt% of a reactive diluent. According to the present invention, an epoxy acrylic middle-refractive optical lens having excellent moldability, thermal stability, and light resistance as well as high compressive strength, while maintaining transparency and Abbe's number in good condition can be produced at a low production cost, by controlling the acid value of epoxy acrylate and allowing a large amount of MMA to be contained in the composition. The epoxy acrylic middle-refractive optical lens according to the present invention can be widely used in various fields by substituting for an existing middle-refractive optical lens.

Classes IPC  ?

• C08F 220/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08F 220/18 - Esters des alcools ou des phénols monohydriques des phénols ou des alcools contenant plusieurs atomes de carbone avec l'acide acrylique ou l'acide méthacrylique
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées
• G02C 7/02 - VerresSystèmes de verres

Abrégé

In the present invention, a tape is wrapped around the outer circumference of an injected mold, and a monomer solution is injected in a cavity formed therebetween, wherein the injection amount of the monomer solution can be minutely controlled by using a visual recognition system: the oil level change of the monomer solution injected into the cavity is filmed using the visual recognition system, the filmed oil level change is compared with an oil level change shape of a monomer solution stored in advance for each step, and if the oil level change shape of the monomer solution injected coincides with the oil level change shape of the monomer stored in advance, a controller can inject the monomer solution into the cavity while adjusting the injection amount of an injector in each step.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes

Abrégé

The present invention relates to an epoxy acryl-based optical lens and, particularly, to a resin composition for an epoxy acryl-based medium-refractive optical lens having a solid-phase refractive index of 1.53-1.58 and favorable transparency, Abbe's number, thermal stability, light resistance, and compressive strength, and to a preparation method therefor. The present invention provides a resin composition for an epoxy acryl-based medium-refractive optical lens having a solid-phase refractive index of 1.53-1.58, the resin composition containing: 50-70 wt% of bisphenol A epoxy acrylate, which is obtained by reaction of bisphenol A diglycidyl ether having a chlorine content of 100-1,700 ppm and an acrylic acid; 21-45 wt% of methyl methacrylate; and 1-17 wt% of a reactive diluent. According to the present invention, a resin composition for an epoxy acryl-based medium-refractive optical lens having improved compressive strength and favorable transparency, Abbe's number, thermal stability, and light resistance in a medium-refractive lens having a refractive index of 1.53-1.58 can be obtained by controlling the chlorine content in bisphenol A diglycidyl ether and containing a large amount of MMA in the composition. The epoxy acryl-based medium-refractive optical lens according to the present invention substitutes for an existing medium-refractive optical lens, and thus can be widely used in various fields.

Classes IPC  ?

• C08F 220/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08K 5/53 - Phosphore lié à l'oxygène lié uniquement à l'oxygène et au carbone
• G02B 3/00 - Lentilles simples ou composées
• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes

Abrégé

A method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, significantly increases yield, and reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. A thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. Such carbonic acid ester compound can be used for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

Classes IPC  ?

• C08G 18/00 - Polymérisats d'isocyanates ou d'isothiocyanates
• C08G 61/04 - Composés macromoléculaires contenant uniquement des atomes de carbone dans la chaîne principale de la molécule, p. ex. polyxylylènes uniquement des atomes de carbone aliphatiques
• C07C 319/12 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols par des réactions n'impliquant pas la formation de groupes mercapto
• C07C 319/04 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols par addition de sulfure d'hydrogène ou de ses sels à des composés non saturés
• C07C 319/26 - SéparationPurificationStabilisationEmploi d'additifs
• C08L 81/00 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant uniquement du soufre, avec ou sans azote, oxygène ou carboneCompositions contenant des polysulfonesCompositions contenant des dérivés de tels polymères
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates
• C08G 18/73 - Polyisocyanates ou polyisothiocyanates acycliques
• C08G 18/75 - Polyisocyanates ou polyisothiocyanates cycliques cycloaliphatiques

Abrégé

The present invention relates to a method for producing 3-mercaptopropionic acid and methods using same for producing a carbonic acid ester compound having a mercapto group and a thiourethane-based optical material. The present invention improves a process during the production of 3-mercaptopropionic acid, thus significantly increases yield, and, at the same time, reduces the temperature and time during vacuum distillation, thereby preventing the destruction of a product and significantly increasing productivity. The present invention has an overall easily implementable, convenient, and simple process, can significantly increase yield and productivity, and allows high-purity 3-mercaptopropionic acid having an excellent color to be finally yielded; accordingly, by using same, a high-purity carbonic acid ester compound having an excellent color and a mercapto group can be inexpensively obtained. Further, a thiourethane-based polymeric composition and a thiourethane-based optical material obtained by polymerizing same can likewise be inexpensively obtained by using said carbonic acid ester compound. The carbonic acid ester compound obtained according to the present invention can be used particularly for the production of inexpensive thiourethane optical lenses; consequently, inexpensive optical lenses having an excellent color can be obtained.

Classes IPC  ?

• C07C 319/26 - SéparationPurificationStabilisationEmploi d'additifs
• C07C 319/04 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols par addition de sulfure d'hydrogène ou de ses sels à des composés non saturés
• C07C 321/14 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• C08L 81/00 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant uniquement du soufre, avec ou sans azote, oxygène ou carboneCompositions contenant des polysulfonesCompositions contenant des dérivés de tels polymères
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a thioepoxy-based ultra-high-refraction optical resin. And more particularly relates to: a thioepoxy-based optical resin composition which has good light resistance and initial colour and hard adhesive strength and allows an increased thiourethane content; and a production method for a thioepoxy-based optical material. The present invention concerns an optical resin composition comprising a thioepoxy compound in the form of bis(2,3-epithiopropyl)sulphide and comprising a thiourethane component in the form of xylylene diisocyanate (XDI) and 2,3-bis(2-mercaptoethylthio) propane-1-thiol (GST), the composition incorporating (2,3-epithiopropyl) (2,3-epoxypropyl)sulphide in an amount of between 2.46 and 12.75 wt.% with respect to the composition as a whole, thereby increasing the content of the thiourethane component to at least 15 wt.% and consequently providing a thioepoxy-based optical material which has outstanding tensile strength, compression strength, colourability, initial colour, hard adhesive strength and the like.

Classes IPC  ?

• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/58 - Résines époxydes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a method for producing a thioepoxy-based optical material, and a polymeric composition for a thioepoxy-based optical material and, in particular, to a production method which can obtain a thioepoxy-based optical material having good color, being capable of inhibiting polymerization imbalance and having good thermal resistance, and to a polymeric composition therefor. The present invention provides a method for producing a thioepoxy-based optical material, comprising a step of obtaining a bis(2-mercaptoethyl) sulfide compound in the form of a synthetic product comprising less than 3% by weight of at least one of 2-2-[2-(2-mercaptoethylthio)ethoxy] ethanol and 1,2,5-trithiepane. Also, the present invention provides a polymeric composition for a thioepoxy-based optical material, comprising the bis (2-mercaptoethyl) sulfide compound in the form of a synthetic product and a thioepoxy compound. According to the present invention, it is possible to obtain a high-quality of thioepoxy-based optical material which has good thermal resistance and of which coloration and polymerization imbalance are suppressed by a simple and easy method.

Classes IPC  ?

• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08L 63/00 - Compositions contenant des résines époxyCompositions contenant des dérivés des résines époxy

Abrégé

The present invention relates to a reinforced plastic sheet that can replace a reinforced glass substrate. The present invention provides a reinforced plastic sheet and a method for manufacturing the same, the reinforced plastic sheet being obtained by impregnating a glass fiber with a thiourethane liquid-state resin, which includes a mixture of a polyisocyanate compound and a polythiol compound, and which has a solid-state refractive index of 1.50-1.61, and then curing the same. The reinforced plastic sheet according to the present invention can be used, in place of conventional reinforced glass substrates, as a display or touch screen-type cover window in various fields, such as portable telephones, tablet PCs, laptops, LCD monitors, cameras, etc. In addition, the reinforced plastic sheet according to the present invention can be widely used in fields that require both transparency and strength, including various kinds of electronic products, such as refrigerators, washing machines, TV sets, etc., product cases that require transparency, and various see-through windows attached to helmets or shields.

Classes IPC  ?

• C08J 5/04 - Renforcement des composés macromoléculaires avec des matériaux fibreux en vrac ou en nappes
• C08J 5/24 - Imprégnation de matériaux avec des prépolymères pouvant être polymérisés en place, p. ex. fabrication des "prepregs"
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/72 - Polyisocyanates ou polyisothiocyanates
• C08K 7/14 - Verre
• C08L 75/04 - Polyuréthanes
• C08J 5/18 - Fabrication de bandes ou de feuilles

Abrégé

The present invention relates to a new method for forming a functional coating layer on an optical lens, and an optical lens with a functional coating layer formed thereon which is manufactured according to the method. Provided is a method for forming a functional coating layer on an optical lens, comprising: a step for forming a functional coating layer by printing a functional coating material on a base film or coating the base film with the functional coating material; a step for drying or curing the functional coating layer; and a step for transferring the dried or cured functional coating layer from the base film to an optical lens. The present invention can provide functions such as a photochromism and self-healing through application of only a simple additional process to a completed lens. The method of the present invention has high productivity, is capable of mass production, and is also capable of significantly reducing production costs compared to conventional methods.

Classes IPC  ?

• G02B 1/11 - Revêtements antiréfléchissants

Abrégé

The present invention relates to a novel thiol compound and a polymerizable composition containing the same. The present invention provides a thiol compound and a polymerizable composition containing the same. The thiol compound and the polymerizable composition containing the same, of the present invention, are suitable for the production of urethane-based plastic materials satisfying both product quality and economic feasibility, and are suitable for the production of, especially, urethane-based plastic materials required to have colorless transparency and high or middle refractive property.

Classes IPC  ?

• C07C 321/04 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• C07C 319/08 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols par remplacement de groupes hydroxy ou de groupes hydroxy éthérifiés ou estérifiés
• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a novel polymerizable composition for a high-refractive optical material, and a method for preparing a high-refractive optical material. The present invention provides a polymerizable composition for a high-refractive optical material, the composition containing a compound represented by chemical formula 1 or 2 and a compound represented by chemical formula 3, and a high-refractive optical material obtained by polymerizing the composition, especially, a glass lens. Furthermore, the present invention provides a composition for a photochromic high-refractive optical material and a photochromic high-refractive optical material obtained by polymerizing the composition, especially, a photochromic glass lens.

Classes IPC  ?

• C08F 20/10 - Esters
• C08L 33/04 - Homopolymères ou copolymères des esters
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a polymerizable composition for a highly refractive optical material, a photochromic composition thereof, and a method for preparing a highly refractive optical material using the compositions. In the present invention, provided is a polymerizable composition for a highly refractive optical material, the polymerizable composition containing at least one of compounds represented by chemical formulas 1 and 2, and provided is a photochromic composition further containing a photochromic compound in addition to the polymerizable composition. According to the present invention, a fluorene acryl based optical material can be obtained that has excellent photochromic performance and optical characteristics while being highly refractive.

Classes IPC  ?

• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C07C 69/612 - Esters d'acides carboxyliques avec un groupe carboxyle lié à un atome de carbone acyclique et comportant un cycle aromatique à six chaînons dans la partie acide

Abrégé

The present invention relates to a highly refractive epoxy-acrylic optical material, and particularly to a polymeric composition therefor and a method for manufacturing the optical material, the polymeric composition having superb demolding property, transparency, thermal stability and light-fastness. Provided is a polymeric composition, for epoxy-acrylic optical material, comprising an epoxy acrylate compound. Epoxy-acrylic optical material manufactured in accordance with the present invention can replace existing optical materials, such as thiourethane-based optical material, and be widely used in a variety of fields.

Classes IPC  ?

• C08L 33/04 - Homopolymères ou copolymères des esters
• C08F 20/10 - Esters
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 5/02 - DiffuseursÉléments afocaux

Abrégé

The present invention relates to a method for storing a thioepoxy compound and a method for preparing a thioepoxy-based optical material using the thioepoxy compound, and particularly, to a preparation of a colorless and transparent high-quality thioepoxy-based optical material which has excellent color and thermal stability and deteriorates a small amount by preventing deterioration during storage of a thioepoxy compound. The present invention provides: a method for storing a thioepoxy compound for an optical material, comprising storing a thioepoxy compound with a water content of 500-2,500 ppm at -78 to 10 ℃; and a method for preparing a thioepoxy-based optical material, comprising polymerizing a polymerizable composition containing the thioepoxy compound stored using the storage method. The colorless and transparent high-quality thioepoxy-based optical material prepared by the present invention can be widely used in various fields by replacing a conventional optical material.

Classes IPC  ?

• C07D 331/02 - Cycles à trois chaînons
• C08L 81/02 - Polythio-éthersPolythioéther-polyéthers
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a polymerization composition for an epoxy acrylic optical material and a method for manufacturing an epoxy acrylic optical material, and more specifically, to a polymerization composition for an epoxy acrylic optical material having enhanced storage stability that can prevent discoloration when stored at room temperature for a long time, and to a method for manufacturing an optical material. The present invention provides the polymerization composition for the epoxy acrylic optical material, comprising an epoxy acrylate-based compound, diphenyl dodecyl phosphate, and a phosphoric acid ester compound. According to the present invention, a high-quality epoxy acrylic optical material having the advantages of a high refractive rate, an excellent Abbe value, and superior optical properties including transparency, lightness, and heat resistance, and which is not subject to discoloration even when storing or using at room temperature for a long time, can be easily obtained. The epoxy acrylic optical material according to the present invention can replace existing optical materials and be widely used in a variety of industries.

Classes IPC  ?

• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08L 33/04 - Homopolymères ou copolymères des esters
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a polymerization composition for an epoxy acrylic optical material and a method for manufacturing an epoxy acrylic optical material, and more specifically to a polymerization composition for an epoxy acrylic optical material having high yield without developing striae or white turbidity by maintaining an appropriate polymerization speed, and is colorless, transparent, and changeless. Provided is the polymerization composition for the epoxy acrylic optical material, comprising an epoxy acrylate compound, which comprises 0.1-2 wt. % of alpha methylstyrene dimer with respect to the total polymerization composition. In the present invention the high-quality epoxy acrylic optical material that does not develop striae or white turbidity can be easily manufactured by stably maintaining the appropriate polymerization speed.

Classes IPC  ?

• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08F 12/08 - Styrène
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a method for manufacturing a thioepoxy-based optical material, and more specifically to a method for manufacturing a high-quality optical material having high yield without developing striae or white turbidity due to imbalanced polymerization, and is colorless, transparent, and changeless. Provided is a method for manufacturing the thio epoxy-based optical material in which a polymerization composition, comprising a compound having at least one thioepoxy group, is in-mold polymerized, and is characterized in that mixing, defoaming, and injection into a mold are performed within the -5~20℃ temperature range. The thioepoxy-based optical material manufactured according to the present invention can replace existing optical materials and be widely used in a variety of industries.

Classes IPC  ?

• C08G 18/52 - Polythioéthers
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a method for manufacturing a thioepoxy-based optical material, and specifically to a method for manufacturing a high-quality optical material having high yield without developing striae, white turbidity, or fine bubbles, and is colorless, transparent, and changeless. Provided is a method for manufacturing the theioepoxy-based optical material in which a polymerization composition, comprising a compound having at least one thioepoxy group or thiethane group, is in-mold polymerized, and is characterized in that the polymerization composition is processed under a specific vacuum condition before being injected into a mold for in-mold polymerization so as to suppress development of striae, white turbidity, or fine bubbles. The thioepoxy-based optical material manufactured according to the present invention can replace existing optical materials and be widely used in a variety of industries.

Classes IPC  ?

• C08G 18/52 - Polythioéthers
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a polymerization composition for an epoxy acrylic optical material and a method for manufacturing an epoxy acrylic optical material, and more specifically, to a polymerization composition for an epoxy acrylic optical material, which can be easily manufactured into an optical material by maintaining appropriate handling properties and polymerization speed and which does not develop striae or white turbidity, and to a method for manufacturing an optical material. The polymerization composition for the epoxy acrylic optical material comprising an epoxy acrylate compound as a monomer ingredient, uses as a reactive diluting agent a dibenzyl malate product of which the content of monobenzylmalate is 10-25 wt. %, and comprises 0.1-2 wt.% of alpha methylstyrene dimer with respect to the total polymerization composition. The epoxy acrylic optical material manufactured according to the present invention replaces existing optical material, such as thiourethane optical material and be widely used in a variety of industries.

Classes IPC  ?

• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08F 12/08 - Styrène
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a method for manufacturing an epoxy acrylic optical material, and more specifically to a method for manufacturing a high-quality optical material having high yield without developing striae, a ring, variable curing, white turbidity, or developing fine bubbles due to imbalanced polymerization, and is colorless, transparent, and changeless. Provided is a method for manufacturing the epoxy acrylic optical material in which a polymerization composition, comprising an epoxy acrylate compound and a reactive dilution agent, is in-mold polymerized, and is characterized in that mixing, defoaming, and injection into a mold are performed within the 5-40℃ temperature range, wherein the polymerization composition is processed in a specific vacuum condition before the in-mold polymerization. The epoxy acrylic optical material according to the present invention can replace existing optical material and be widely used in a variety of industries.

Classes IPC  ?

• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08L 33/04 - Homopolymères ou copolymères des esters
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a method for manufacturing a thiourethane-based optical material, and specifically to a method for manufacturing a high-quality optical material having high yield without developing striae, white turbidity, and fine bubbles, and is colorless, transparent, and changeless. Provided is a method for manufacturing the thiourethane-based optical material in which a polymerization composition, comprising a polythiol compound and a polyisocyanate compound, is in-mold polymerized, and is characterized in that polymerization composition is processed under a specific vacuum condition before being injected into a mold for in-mold polymerization. The thiourethane-based optical material manufactured according to the present invention can replace existing optical materials and be widely used in a variety of industries.

Classes IPC  ?

• C08G 18/70 - Polymérisats d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs caractérisés par les isocyanates ou isothiocyanates utilisés
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a polymerizable composition for an epoxy acrylic optical material, and a method for preparing an epoxy acrylic optical material, and particularly, to: a polymerizable composition for an epoxy acrylic optical material which maintains suitable viscosity and reaction velocity, and thereby facilitates preparation of an optical material; and a method for preparing an optical material. The present invention provides a polymerizable composition for an epoxy acrylic optical material, comprising an epoxy acrylate-based compound and a dibenzyl malate product containing 10-25 wt% of monobenzyl malate. The present invention can provide a polymerizable composition for an epoxy acrylic optical material which uses a dibenzyl malate product containing 10-25 wt% of monobenzyl malate together with a monomer component, thereby having a suitable handling property and reactivity to facilitate the preparation of an optical material. It is possible to prepare, in a high yield, a high quality epoxy acrylic optical material having a high refractive index, a high Abbe's number and remarkable optical properties such as transparency, lightweightness, heat resistance and the like by template polymerizing the polymerizable composition of the present invention.

Classes IPC  ?

• C08L 33/04 - Homopolymères ou copolymères des esters
• C08L 35/00 - Compositions contenant des homopolymères ou des copolymères de composés possédant un ou plusieurs radicaux aliphatiques non saturés, chacun ne contenant qu'une seule liaison double carbone-carbone l'un au moins étant terminé par un radical carboxyle et contenant au moins un autre radical carboxyle dans la molécule, ou leurs sels, anhydrides, esters, amides, imides ou nitrilesCompositions contenant des dérivés de tels polymères
• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a method for polymerizing a resin casting for use as an epoxy acrylic optical lens which facilitates the separation of same from a mold, and to a resin composition containing an internal releasing agent for use in epoxy acrylic optical lenses. According to the present invention, a compound having a polar group or a phosphate ester compound is added as an internal releasing agent to the resin composition used for epoxy acrylate lenses for eyeglasses so that the resin for the optical lens can be manufactured to have little polymerization imbalance and excellent release performance.

Classes IPC  ?

• C08F 20/26 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle
• C08F 20/32 - Esters contenant de l'oxygène en plus de l'oxygène de la fonction carboxyle contenant des radicaux époxyde
• C08F 2/44 - Polymérisation en présence d'additifs, p. ex. plastifiants, matières colorantes, charges
• C08L 33/04 - Homopolymères ou copolymères des esters
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a novel method for preparing a polythiol compound which is used for an optical material, and to a polymeric composition comprising the polythiol compound, and more particularly, to a composition and method for obtaining a high-quality polythiol compound having homogeneous color and high purity at a low cost and also obtaining, through the use of a polymeric composition including the polythiol composition, an optical lens having outstanding optical properties, which is clean and transparent and has high heat-resistance.

Classes IPC  ?

• C07C 319/22 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures d'hydropolysulfures ou de polysulfures
• C07C 319/06 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols à partir de sulfures, d'hydropolysulfures ou de polysulfures
• C07C 321/14 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a method for producing a polythiol compound used in thioepoxy-based optical materials and to a copolymer composition, comprising the polythiol compound, for thioepoxy-based optical materials, and particularly to a high-quality polythiol compound, for optical materials, exhibiting desirable characteristics from a coloring perspective, and a copolymer composition comprising same. Provided in the present invention is a method for producing a polythiol compound having reduced coloration by means of controlling the calcium content in thiourea used in the synthesis of polythiol composition for thioepoxy-based optical materials, and particularly a method for producing bis(2-hydroxyethyl)sulfide compound used in the copolymerization of thioepoxy-based optical materials, and a copolymer composition comprising polythiol compound obtained by the method. The thioepoxy-based optical lens having good coloring, obtained by means of the present invention, can replace existing lenses and be widely used in diverse fields, particularly as lenses for glasses, polarized lights and cameras.

Classes IPC  ?

• C07C 319/02 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols
• C07C 321/14 - Sulfures, hydropolysulfures ou polysulfures ayant des groupes thio liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a polythiol compound for optical materials exhibiting desirable characteristics from a coloring perspective, a composition comprising same for optical materials, and a method for producing optical materials. The present invention provides a method for producing a polythiol compound for optical materials which reacts epichlorohydrin compound having total impurities content of less than 0.5 wt% and 2-Mercaptoethanol. The present invention allows obtaining a polythiol compound exhibiting suppressed coloration, and by using same, allows obtaining a urethane group exhibiting suppressed coloration, low yellowness and good coloring. The polythiol compound according to the present invention can be used in the production of a variety of optical materials such as a urethane group, and optical lenses having good coloring, obtained by means of the present invention, can replace existing lenses and be widely used in diverse fields, particularly as lenses for glasses, polarized lights and cameras.

Classes IPC  ?

• C07C 319/02 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols
• C07C 321/04 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• G02B 3/00 - Lentilles simples ou composées
• C08G 18/52 - Polythioéthers

Abrégé

The present invention relates to a method for producing 3-mercaptopropionic acid and carbonic acid ester composition having mercapto group using same, and a method for producing thiourethane-based optical materials. The method for producing 3-mercaptopropionic acid according to the present invention does not include a post-processing treatment, which is necessitated by generation of a dimer such as thiodipropionitrile, thereby the process is simple and economical, and exhibits superior yield rate. Additionally, the carbonic acid ester composition produced with 3-mercaptopropionic acid produced using the method exhibit superior purity and coloring, and allows production at a low cost, and thus has the benefit of being usable as an inexpensive resin composition for urethane-based optical materials, and ptical materials thus produced exhibit excellent coloring. Thiourethane-based optical lenses having good coloring, obtained by means of the present invention, can replace existing lenses and be widely used in diverse fields.

Classes IPC  ?

• C07C 319/04 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols par addition de sulfure d'hydrogène ou de ses sels à des composés non saturés
• C07C 323/03 - Thiols, sulfures, hydropolysulfures ou polysulfures substitués par des halogènes, des atomes d'oxygène ou d'azote ou par des atomes de soufre ne faisant pas partie de groupes thio contenant des groupes thio et des atomes d'halogène ou des groupes nitro ou nitroso liés au même squelette carboné ayant des atomes de soufre de groupes thio liés à des atomes de carbone acycliques du squelette carboné le squelette carboné étant acyclique et saturé
• C08L 81/00 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant uniquement du soufre, avec ou sans azote, oxygène ou carboneCompositions contenant des polysulfonesCompositions contenant des dérivés de tels polymères

Abrégé

The present invention relates to a method for preparing a thioepoxy-based optical material, to a polymerizable composition thereof and to a thioepoxy compound for the composition. The present invention provides a thioepoxy compound for an optical material, containing 4 to 15 % by weight of a 2,3-epoxypropyl(2,3-epithiopropyl) sulfide compound and/or a 2,3-epoxypropyl(2,3-epithiopropyl) disulfide compound. The present invention also provides a polymerizable composition comprising the thioepoxy compound and a method for preparing an optical material for polymerizing the composition. The present invention solves the problems of color instability, deformation and polymerization imbalance in a thioepoxy-based optical material.

Classes IPC  ?

• C07D 409/12 - Composés hétérocycliques contenant plusieurs hétérocycles, au moins un cycle comportant des atomes de soufre comme uniques hétéro-atomes du cycle contenant deux hétérocycles liés par une chaîne contenant des hétéro-atomes comme chaînons
• C08G 18/52 - Polythioéthers
• C08G 18/58 - Résines époxydes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a copolymer composition comprising a thioepoxy compound, a polyisocyanate compound and a polythiol compound and to a thioepoxy-based optical material for polymerizing the composition. More particularly, the present invention relates to a method for preparing a high quality optical material which may not cause a striae or turbidity and which is colorless and transparent and which may not cause a deformation. The present invention provides a thioepoxy-based copolymer composition comprising a thioepoxy compound, a polyisocyanate compound and a polythiol compound, the water content of the thioepoxy compound being 10 to 700ppm, the water content of the composition being 10 to 800 ppm. The present invention also provides a method for preparing a thioepoxy-based optical material for polymerizing the composition.

Classes IPC  ?

• C08G 18/09 - Procédés de préparation comprenant l'oligomérisation d'isocyanates ou d'isothiocyanates, impliquant la réaction entre eux d'une partie des groupes isocyanate ou isothiocyanate dans le mélange réactionnel
• C08G 18/52 - Polythioéthers
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 5/04 - Prismes

Abrégé

The present invention relates to a copolymer composition for a highly refractive optical lens, said composition comprising a thioepoxy compound, a polyisocyanate compound, and a polythiol compound, and more particularly, to a copolymer composition and a method for manufacturing an optical lens which does not have a surface ring defect even in a high power lens, the mold for which has a large radius of curvature. In the present invention provides the copolymer composition comprising the thioepoxy compound, the polyisocyanate compound, and a bis(2-mercaptoethyl) sulfide, the optical lens in which the composition is polymerized, and the method for manufacturing the optical lens. The copolymer composition and the optical lens in which the composition is polymerized, according to the present invention, exhibit very few surface ring defects on the surface of the lens even in a high-power lens (having an optical power of approximately at least -6.00), exhibits superior surface precision, and can be manufactured at a high yield. According to the present invention, ring defects on the surfaces of lenses are rare even in a highly refractive high-power lens, and a thioepoxy-based optical material, which has superior surface precision, can be used to manufacture lenses at a high yield. The optical lens manufactured according to the present invention can replace existing optical lenses and can be utilized in various areas, including lenses for glasses, polarized lenses, and camera lenses.

Classes IPC  ?

• C08G 75/00 - Composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant du soufre, avec ou sans azote, oxygène ou carbone
• C08K 5/521 - Esters des acides phosphoriques, p. ex. de H3PO4
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a polymeric composition for a thioepoxy-based optical material and a method of manufacturing a thioepoxy-based optical material, and more particularly, to providing a clear, transparent, and high quality thioepoxy-based optical material that resolves a color instability problem exhibited in thioepoxy-based optical materials. The present invention provides a thioepoxy-based polymeric composition comprising a thioepoxy compound having 1% or less by weight of epichlorohydrin. In the present invention, the color instability problem exhibited in thioepoxy-based optical materials can be resolved in an easy way by controlling the content of epichlorohydrin in a starting material, which synthesizes a thioepoxy compound, or the content of epichlorohydrin in a thioepoxy compound. According to the present invention, a clear, transparent, and high quality thioepoxy-based optical material can be easily manufactured at a high yield. The thioepoxy optical material thus manufactured according to the present invention can be widely used instead of a common optical material.

Classes IPC  ?

• C08G 18/52 - Polythioéthers
• C08K 5/405 - ThiouréesLeurs dérivés
• C08L 75/00 - Compositions contenant des polyurées ou des polyuréthanesCompositions contenant des dérivés de tels polymères
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a polymerizable composition for an optical material, and a preparation method of an optical material for obtaining a high quality thioepoxy-based optical material without uncuring or polymer imbalance. The present invention provides a preparation method of a thioepoxy-based optical material comprising the steps of: preparing a polymerizable composition containing a thioepoxy compound with a pH of 4-8; and template polymerizing the polymerizable composition. The thioepoxy-based optical material prepared according to the present invention can be widely used in various fields by replacing conventional optical materials.

Classes IPC  ?

• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a template polymerization method of a thioepoxy-based optical material, and a polymerizable composition thereof, and more specifically, to a template polymerization method of a thioepoxy-based optical material having good demolding properties from a mold and surface precision, and a polymerizable composition thereof. The present invention provides a template polymerization method of a thioepoxy-based optical material by putting a polymerizable composition containing a thioepoxy compound into a mold, and polymerizing the same, wherein the water content of the polymerizable composition is 100-2,500 ppm, and an internal release agent is added to the polymerizable composition before polymerization. A thioepoxy-based optical material with excellent surface precision prepared by the present invention can be widely used in various fields by replacing conventional optical materials.

Classes IPC  ?

• C08G 18/38 - Composés de bas poids moléculaire contenant des hétéro-atomes autres que l'oxygène
• C08G 18/52 - Polythioéthers
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02C 7/02 - VerresSystèmes de verres

Abrégé

The present invention relates to a method for manufacturing a polythiol compound, and a polymerization composite for optical material comprising same, and particularly to a method for manufacturing a polythiol compound by reacting a triple-bond compound and a mercapto group having a thiol functional group and preparing through a polyol compound, and to a polymerization composite for optical material comprising the polythiol compound. Provided is a manufacturing method for the polythiol compound for optical material comprising the steps of: producing a polyol compound by reacting a triple-bond compound and a mercapto compound having at least one thiol functional group; producing isothiuronium salt by reacting the polyol compound and thiourea; and producing the polythiol compound by hydrolyzing the isothiuronium salt. The polythiol compound manufactured in accordance to the present invention can produce colorless and transparent high-quality lens which are without imbalanced polymerization, whitening or white turbidity, even when the lens are manufactured by polymerization with widely used polyiso(thio)cyanate.

Classes IPC  ?

• C07C 319/02 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de thiols
• C08G 18/52 - Polythioéthers
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C07C 319/18 - Préparation de thiols, de sulfures, d'hydropolysulfures ou de polysulfures de sulfures par addition de thiols à des composés non saturés

Abrégé

The present invention relates to a method for manufacturing thiourethane-based optical material, and particularly to a method for manufacturing high-quality optical material having high yield without developing striae or white turbidity due to imbalanced polymerization, and is colorless, transparent and changeless. Provided is a method for manufacturing thiourethane-based optical material in which a polymerization composite, comprising a polythiol compound and a polyiso(thio)cyanate compound, is in-mold polymerized, and is characterized in that mixing, defoaming and injection into a mold are performed within the 21- 40℃ temperature range. The thiourethane-based optical material manufactured according to the present invention can replace existing optical material and be widely used in a variety of industries.

Classes IPC  ?

• C08G 75/04 - Polythioéthers à partir de composés mercapto ou de leurs dérivés métalliques
• C08G 18/02 - Polymérisats d'isocyanates ou d'isothiocyanates d'isocyanates ou d'isothiocyanates uniquement
• C08L 81/00 - Compositions contenant des composés macromoléculaires obtenus par des réactions créant dans la chaîne principale de la macromolécule une liaison contenant uniquement du soufre, avec ou sans azote, oxygène ou carboneCompositions contenant des polysulfonesCompositions contenant des dérivés de tels polymères
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a method for manufacturing a high-quality thiorethane-based optical material by using a universal polyisocynate compound, a resin composition therefor, and an optical material manufactured thereby. The present invention provides the thiourethane-based optical material, which is not subject to whitening of the edge of the lens or polymer imbalance, by controlling a polythiol compound obtained from the manufacturing process to be pH 3.1-7, in order to resolve the existing problem of whitening, which occurs by an adhesive agent melting from an adhesive tape when casting the lens.

Classes IPC  ?

• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• C08K 5/37 - Thiols
• C08G 18/06 - Polymérisats d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs
• C07C 321/02 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques

Abrégé

The present invention relates to a novel polythiol compound having utility for optical lens material, a preparation method therefor, and a resin composition for an optical material using the novel polythiol. A resin composition for an optical material having the novel polythiol compound of the present invention has excellent heat resistance and reactivity while having high refractive index, and can thus be used for various optical products including lenses such as eyeglass lens and camera lens, prism, optical pipe, recording medium system such as optical disk and magnetic disk, colored filter, and infrared absorber filter.

Classes IPC  ?

• C07C 321/04 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a polythiol compound, a method for preparing the polythiol compound, and a resin composition for a urethane optical material using the polythiol compound, and in particular, to a polythiol compound having extended a chain thereof through ring-opening by adding a compound having terminal thiol group to a cyclic episulfide or thietane compound, a method for preparing the polythiol compound, and a resin compound for an optical material using the polythiol compound. The optical material obtained using the polythiol compound (chemical formula 1) developed in the present invention enhances refractive index, has excellent heat resistance and reactivity, and can thus be used for optics related products including lens such as glasses lens and camera lens, prism, optical pipe, optical disk, magnetic disk, recording medium system, colored filter, infrared absorber filter, and other plastic processed products.

Classes IPC  ?

• C07C 321/04 - Thiols ayant des groupes mercapto liés à des atomes de carbone acycliques d'un squelette carboné acyclique saturé
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a method for manufacturing an optical material by polymerizing a resin composition comprising a compound containing thiol and a composition having an isocyanate group, and more particularly, to a method for manufacturing a high-quality urethane-based optical material by using a universal polyisocyanate compound. The present invention provides the method for manufacturing the resin for the urethane-based optical material, which in-mold polymerizes a polythiol compound and a universal polyisocyanate compound as main ingredients and the resin composition having 300 to 3,000ppm of water, and provides the optical material manufactured thereby. According to the present invention, by using the universal isocyanate compound, which is supplied at a low price, tape whitening or the formation of bubbles can be minimized while performing the in-mold polymerization using tape, and a high-quality and transparent urethane-based optical material without any color can be manufactured at a high yield.

Classes IPC  ?

• C08G 18/70 - Polymérisats d'isocyanates ou d'isothiocyanates avec des composés contenant des hydrogènes actifs caractérisés par les isocyanates ou isothiocyanates utilisés
• C08G 18/52 - Polythioéthers
• C08L 75/04 - Polyuréthanes
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques
• G02B 3/00 - Lentilles simples ou composées

Abrégé

The present invention relates to a novel method for preparing an allyl carbonate compound and to a resin composition for optics using same, and more particularly, for providing a preparation method for acquiring an allyl carbonate compound by preliminarily ester exchange-reacting the allyl carbonate with unsaturated alcohol with the presence of a catalyst to achieve a diallyl carbonate compound, adding a polyhydric alcohol to same, and enriching same by distilling under reduced pressure, and for providing a resin composition for optics using same, which has a higher Abbe value and superior APHA, by means of the acquired allyl carbonate alone, or by mixing unsaturated carboxylate or a vinyl monomer, .

Classes IPC  ?

• C07C 68/06 - Préparation des esters de l'acide carbonique ou de l'acide formique halogéné à partir de carbonates organiques
• C07C 68/00 - Préparation des esters de l'acide carbonique ou de l'acide formique halogéné
• C07C 69/96 - Esters de l'acide carbonique ou de l'acide formique halogéné
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a resin composition for a plastic optical lens, and more specifically to a resin composition for a urethane optical lens having high thermal resistance and high reactivity. The resin composition for an optical lens of the present invention uses an optical resin prepolymer which is obtained from a preceding side reaction of a mercapto compound and a –SH/-NCO of isophorone diisocyanate or dicyclohexylmethanediisocyanate in appropriate mole ratios. The use of isophorone diisocyanate or dicyclohexylmethanediisocyanate results in enhancement of the thermal resistance of the optical lens, and the use of optical resin prepolymer at 20~70 weight % of the total weight of the resin composition for the optical lens, elutes the adhesive from adhesive tape due to lowered reactivity which results in a higher temperature reaction thereby resolving the problems of whitening phenomenon and foaming which occur on the edge of the lens due to a leak of the liquid composition when the reaction temperature increases.

Classes IPC  ?

• C08L 75/04 - Polyuréthanes
• C08L 67/04 - Polyesters dérivés des acides hydroxycarboxyliques, p. ex. lactones
• G02B 5/30 - Éléments polarisants
• G02B 1/10 - Revêtements optiques obtenus par application sur les éléments optiques ou par traitement de la surface de ceux-ci

Abrégé

The present invention relates to a resin composition for a high refractive index optical lens having superior impact resistance, to a high refractive index optical lens using same, and to a method for producing same. More particularly, the present invention relates to a resin composition for an optical lens which has superior impact resistance and heat resistance after being multicoated, which is lightweight, and which has superior workability including formability, dyeability, etc., and superior optical properties including Abbe number, transparency, ultraviolet barrier properties, etc. The present invention also relates to a high refractive index optical lens using same.

Classes IPC  ?

• C08L 75/02 - Polyurées
• C08G 18/52 - Polythioéthers
• C08G 18/74 - Polyisocyanates ou polyisothiocyanates cycliques
• G02B 1/04 - Éléments optiques caractérisés par la substance dont ils sont faitsRevêtements optiques pour éléments optiques faits de substances organiques, p. ex. plastiques

Abrégé

The present invention relates to a resin composition which can be used for manufacturing a plastic optical lens. More specifically, the lightweight high-refraction resin composition for optical lenses and an optical lens using the same are obtained by reacting novel thiol compound and isocyanate compound. The optical lens manufactured using the resin compound of the present invention: is light due to a low specific gravity, is highly heat-resistant due to a high heat distortion temperature, and reduces production costs due to a low rate of raw materials and a high yield rate.

Classes IPC  ?

• C08K 5/37 - Thiols

Abrégé

An optical resin composition with superior impact resistance and a method for producing an optical lens from the composition are disclosed. In one embodiment, the optical resin composition for a plastic optical lens has superior impact resistance as well as light-weight, superior moldability, excellent dyeing ability, a high Abbe number and good transparency. The optical lens produced from the composition exhibits superior impact resistance even after multi-coating. The optical resin composition with superior impact resistance has a solid refractive index (nD) of about 1.53 to about 1.57, an Abbe number of about 35 to about 48, a liquid specific gravity of about 0.97 to about 1.25 and a solid specific gravity of about 1.10 to about 1.35, by which the composition comprises a mixture of isophorone diisocyanate and hexamethylene diisocyanate, pentaerythritol tetrakis(3-mercaptopropionate), a UV absorber, a release agent and a polymerization initiator. The optical lens is produced by thermally curing the composition.

Classes IPC  ?

• B29D 11/00 - Fabrication d'éléments optiques, p. ex. lentilles ou prismes