The present invention provides a novel polyarylene sulfide staple fiber. In particular, the staple fiber may have a low single yarn rate and excellent mechanical strength. Furthermore, the staple fiber can provide a nonwoven fabric having low pressure-loss and excellent filter efficiency, and thus can be effectively used in various filters.
D01D 5/098 - Melt-spinning methods with simultaneous stretching
D01F 6/76 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from other polycondensation products
C08G 75/0263 - Preparatory processes using elemental sulfur
An embodiment of the present invention relates to a novel polyarylene sulfide monofilament fiber. The polyarylene sulfide monofilament fiber according to the embodiment can achieve high melt viscosity, which was previously difficult to obtain, while retaining desirable physical properties, and can thus be effectively used.
D01D 5/098 - Melt-spinning methods with simultaneous stretching
D01F 6/76 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from other polycondensation products
An embodiment of the present invention relates to a polyarylene sulfide resin composition and a thermal shock resistant molded article, wherein the polyarylene sulfide resin composition of the embodiment comprises a polyarylene sulfide resin having the melt viscosity of 400 poise or more, a flat glass fiber, an inorganic filler, and a silane coupling agent, and thus, has excellent thermal/chemical stability, formability and mechanical properties.
Embodiments relate to a polyarylene sulfide resin having a specific structure including at the same time a thiol group and a functional group other than the thiol group, and a preparation method therefor, and more specifically, to a polyarylene sulfide resin comprising: a first terminal group including a thiol group; and a second terminal group including a functional group other than a thiol group, in which the polyarylene sulfide resin has improved reactivity with other resins as well as glass fiber and other additives, thus allowing strength, elongation, mechanical properties, metal adhesion and the like to be improved. In particular, when a polymerization inhibitor composition of another embodiment of the present invention is used in preparing a polyarylene sulfide resin, a polyarylene sulfide resin having a polyfunctional end group including a thiol group can be easily provided.
The present invention relates to a novel polyarylene sulfide multi-filament fiber. The multi-filament fiber according to the present invention may have low rate of thread breakage and superb mechanical strength.
A polyarylene sulfide resin composition contains a polyarylene sulfide resin, a transition metal particle, a fibrous inorganic filler, and an inorganic nucleating agent, and a molded article made from the resin composition. The resin composition has excellent mechanical, corrosion, and haze properties, and heat resistance. The resin composition prevents corrosion of a mold and deterioration in the durability of a manufactured product upon injection by effectively removing halogen-based impurities, and also has excellent mechanical, corrosion, and haze properties, and heat resistance. A molded article manufactured from the resin composition satisfies the standards required for components of a vehicle and an electric/electronic device.
The present invention relates to a polyarylene sulfide which has more improved compatibility with other polymer materials or fillers, and a method for preparing the same. The polyarylene sulfide is characterized in that at least part of end groups of the main chain of the polyarylene sulfide is hydroxyl group (—OH), the polyarylene sulfide contains iodine bonded to its main chain and free iodine, and the content of iodine bonded to the main chain and free iodine is 10 to 10,000 ppmw.
The present disclosure relates to a polyarylene sulfide resin composition for an automobile headlamp component, a method for producing the same, and an automobile headlamp component manufactured using the same. The polyarylene sulfide resin composition includes: about 45 wt % to about 75 wt % of a polyarylene sulfide resin containing about 300 ppm or less of chlorine; about 24.5 wt % to about 55 wt % of an inorganic filler; about 0.1 wt % to about 1 wt % of a nucleating agent; about 0.05 wt % to about 1 wt % of metal powder; and about 0.1 wt % to about 2.5 wt % of a composite metal hydroxide.
C08K 13/04 - Ingredients characterised by their shape and organic or inorganic ingredients
B60Q 1/04 - Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
The present invention relates to a polyarylene sulfide resin composition having good processability and showing excellent properties due to its more improved miscibility with other polymer materials or fillers, and a formed article. Such polyarylene sulfide resin composition includes a polyarylene sulfide including a disulfide repeating unit in the repeating units of the main chain; and at least one component selected from the group consisting of a thermoplastic resin, a thermoplastic elastomer, and a filler.
C08L 33/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
C08L 77/00 - Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chainCompositions of derivatives of such polymers
10.
Polyarylene sulfide and a preparation method thereof
The present invention relates to a polyarylene sulfide which has more improved compatibility with other polymer materials or fillers, and a method for preparing the same. The polyarylene sulfide is characterized in that at least part of end groups of the main chain of the polyarylene sulfide is hydroxyl group (—OH), the polyarylene sulfide contains iodine bonded to its main chain and free iodine, and the content of iodine bonded to the main chain and free iodine is 10 to 10,000 ppmw.
The present invention relates to a polyarylene sulfide-based resin composition, which has excellent thermal conduction efficiency in the horizontal and vertical directions and excellent mechanical properties such as tensile strength and impact strength, and to a molded article thereof.
The present invention relates to a method for separating volatile substances, particularly iodine, diiodised aromatic compounds and/or mixtures thereof, from material mixtures containing said compounds. The invention further relates to a device for producing polyarylene sulphides, by means of which volatile substances, particularly iodine and diiodised aromatic compounds, can be separated from the polymers.
C08G 75/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
The present invention relates to a method for separating volatile substances, particularly iodine, diiodized aromatic compounds and/or mixtures thereof, from material mixtures containing said compounds. The invention further relates to a device for producing polyarylene sulphides, by means of which volatile substances, particularly iodine and diiodized aromatic compounds, can be separated from the polymers.
C08G 75/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
The present invention relates to a method for separating volatile substances, particularly iodine, diiodised aromatic compounds and/or mixtures thereof, from material mixtures containing said compounds. The invention further relates to a device for producing polyarylene sulphides, by means of which volatile substances, particularly iodine and diiodised aromatic compounds, can be separated from the polymers.
C08G 75/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
The present invention relates to a polyarylene sulfide resin composition having excellent impact resistance in which a polyarylene sulfide resin having a specific end group, an epoxy-containing olefin-based elastomer, and/or an organic or inorganic filler are included, and a preparation method thereof.
A method for preparing polyarylene sulfide having reduced iodine content and excellent thermal stability is described. The method includes reacting a composition comprising diiodide aromatic compounds, sulfur compounds, and a polymerization terminator. The preparation method may effectively reduce iodine content of polyarylene sulfide to prevent corrosion of post processing equipment, improve properties of polyarylene sulfide such as thermal stability, and the like, and thus, it may be usefully applied in the industrial field relating to preparation of polyarylene sulfide.
C08G 75/00 - Macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing sulfur, with or without nitrogen, oxygen, or carbon
18.
Manufacturing process for iodinated aromatic compounds
Disclosed is a method for preparing an iodinated aromatic compound. More specifically, disclosed is a method of preparing an iodinated aromatic compound by iodinating an aromatic compound in the presence of oxygen over a zeolite catalyst, in which the aromatic compound and a monoiodo analog of the aromatic compound, or a monoiodo aromatic compound, as raw materials, are allowed to react with iodine. In comparison with a method in which only the aromatic compound is used as a raw material without adding the monoiodo compound, the disclosed method can increase the productivity of diiodo compounds and the selectivity to a p-diiodo compound and, at the same time, suppress side reactions, thus lengthening the life span of the catalyst.
The present invention relates to a method of preparing iodinated aromatic compounds, and more preferably a method of preparing iodinated aromatic compounds comprising a step of iodinating a react ant including an aromatic compound, a di-iodo aromatic compound or water, and iodine (I2) in the presence of a zeolite catalyst and oxygen. The method of the present invention has an advantage that by iodination of a reactant including the aromatic compound, and the di˜ iodo aromatic compound or water in the presence of the zeolite catalyst and oxygen, the temperature of the iodinating reactor can be controlled reliably and constantly, thereby resulting in improved productivity per unit weight of catalyst and inhibition of a side reaction in accordance with suppression of producing impurities. In addition, the productivity of the iodinated aromatic compound, preferably the di-iodo aromatic compound, more preferably a p-di-iodo aromatic compound can be improved, and thus can be widely used in the preparation of a di-iodo aromatic compound such as a p-di-iodo aromatic compound.
The present invention relates to a method of preparing mono-iodo benzene with a transiodination reaction, and more preferably a method of preparing mono-iodo benzene including a step of performing transiodination of a reactant including benzene and at least a multi-iodo benzene selected from the group consisting of di-iodo benzene and tri-iodo benzene with an HY or HBeta type of zeolite having a Si/Al molar ratio of 10 to 100 as a catalyst. The method of the present invention has an advantage that iodine is recovered from by-products including m-di-iodo benzene, o-di-iodo benzene, and tri-iodo benzene obtained in the process of preparing p-di-iodo benzene, thereby resulting in minimizing the loss of iodine.
