The invention relates to microparticles that are microcapsules comprising a core and a polymeric shell, the volume median size of which is between 1 µm and 100 µm. The shell of the microcapsules comprises at least one polymer comprising units corresponding to at least one monomer comprising at least one ester group.
The invention relates to solid polymeric microparticles, the volume median size of which is between 1 µm and 100 µm. The solid microparticles comprise at least one polymer comprising units corresponding to at least one monomer comprising at least one ester group.
A23K 40/30 - Mise en forme ou traitement des produits alimentaires pour animaux par encapsulationMise en forme ou traitement des produits alimentaires pour animaux par revêtement
A23P 10/30 - Mise en capsules de particules, p. ex. additifs alimentaires
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
3.
COSMETIC COMPOSITION COMPRISING POLYMERIC MICROPARTICLES AND APPLICATION METHOD
The invention relates to a cosmetic composition comprising microparticles of a polymer based on (meth)acrylate units. This cosmetic composition has cosmetic care and make-up effects such as a smoothing effect on the skin surface or an optical blurring effect on skin imperfections. The present invention also relates to a method for caring for and making up keratinic materials, comprising a step of applying said cosmetic composition to the body.
A61K 8/81 - Cosmétiques ou préparations similaires pour la toilette caractérisés par la composition contenant des composés organiques macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons insaturées carbone-carbone
The invention concerns a plurality of microcapsules comprising an active ingredient encapsulated in a cross-linked polymeric shell, wherein the crosslinked polymeric shell comprises a dispersant. A homogeneous dispersion comprising (a) a polymer matrix and (b) 0.1-15 % by weight, preferably 1-10% by weight relative to the total weight of the homogeneous dispersion of the plurality of microcapsules is also disclosed.
A method for the manufacture of a water-in-oil-in-water double emulsion, which includes a step of adding dropwise an aqueous phase to an oil phase until a catastrophic inversion. Also, a water-in-oil-in-water double emulsion, a method for preparing solid microcapsules from a water-in-oil-water double emulsion having oligomers and/or monomers in the oil phase.
The present invention relates to a composition comprising: at least one composition for home care, and at least one solid microcapsule having an average diameter of between 1 μm and 30 μm, comprising a core consisting of a composition C1 comprising at least one perfuming agent, and a solid shell of crosslinked polymer totally encapsulating the core at its periphery, said solid shell comprising a crosslinked polymer obtained by polymerization of at least one monomer or polymer bearing at least one reactive function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions, and wherein the thickness of the soli shell is between 0.1 μm and 20 μm.
A composition having at least one composition for washing and/or care of fabrics, and at least one solid microcapsule having a mean diameter between 1 μm and 30 μm, with a core consisting of a composition C1 comprising at least one perfuming agent, and a solid crosslinked-polymer envelope totally encapsulating the core at its circumference, wherein the solid envelope comprises a crosslinked polymer obtained by polymerizing at least one monomer or polymer having at least one reactive moiety selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate, and carboxylate moieties, and wherein the thickness of the solid envelope is between 0.1 μm and 20 μm.
The present invention relates to a biodegradable solid cross-linked microcapsule encapsulating at least one volatile lipophilic ingredient or a preparation comprising a volatile lipophilic ingredient, said microcapsule having a mean diameter from 0.5 µm to 100 µm, said microcapsule comprising: - a core consisting of a composition C1 comprising at least one volatile lipophilic ingredient or a preparation comprising a volatile lipophilic ingredient, and from 1% to 20% by weight of a viscosifying agent relative to the total weight of said composition, and - a solid cross-linked polymer envelope at least partially, preferably totally, encapsulating the core at its periphery, said solid cross-linked polymer envelope being made of a cross-linked polymer, said polymer being a polymer obtained by polymerizing one or several oligomer(s) or monomer(s), and wherein the average thickness of said solid cross-linked polymer envelope is from 5% to 30% of the average diameter of said solid cross-linked microcapsule.
The present invention relates to a solid cross-linked microcapsule encapsulating clomazone having a mean diameter from 3 µm to 30 µm, said microcapsule comprising: - a core consisting of a composition C1 comprising clomazone, and - a solid cross-linked polymer envelope totally encapsulating the core at its periphery, said solid cross-linked polymer envelope being made of a biodegradable cross-linked polymer, said polymer being an aliphatic polymer obtained by polymerizing one or several oligomer(s) or monomer(s), said polymer comprising at least 25%, preferably at least 30%, of ester groups by weight in comparison with the total weight of said polymer, and wherein the average thickness of said solid cross-linked polymer envelope is from 5% to 30% of the average diameter of said solid cross-linked microcapsule.
A01N 43/80 - Biocides, produits repoussant ou attirant les animaux nuisibles, ou régulateurs de croissance des végétaux, contenant des composés hétérocycliques comportant des cycles avec des atomes d'azote et des atomes d'oxygène ou de soufre, comme hétéro-atomes du cycle des cycles à cinq chaînons avec un atome d'azote et soit un atome d'oxygène, soit un atome de soufre, en positions 1,2
The present invention relates to a solid cross-linked microcapsule encapsulating agrochemical ingredient or agrochemical preparation having a mean diameter from 0.5 µm to 50 µm, said microcapsule comprising: - a core consisting of a composition C1 comprising at least one agrochemical ingredient or agrochemical preparation, and - a solid cross-linked polymer envelope totally encapsulating the core at its periphery, said solid cross-linked polymer envelope being made of a biodegradable cross-linked polymer, said polymer being an aliphatic nonaromatic polymer obtained by polymerizing one or several oligomer(s) or monomer(s), and wherein the average thickness of said solid cross-linked polymer envelope is from 5% to 30% of the average diameter of said solid cross-linked microcapsule.
The present invention relates to a solid microcapsule comprising a shell and a core, the shell comprising a crosslinked polymer P1, and the core being inside the shell and comprising at least one polymer P2 crosslinked in three dimensions and entrapping at least one active agent.
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
An emulsion including size-controlled droplets dispersed in a viscoelastic continuous phase including a polymer in solution in a solvent, wherein the viscoelastic continuous phase presents a ratio between the viscous modulus (G″) and the elastic modulus (G′) ranging from 0.2 to 10 and wherein the mean diameter of the droplets is proportional to the G′/G″ ratio with 1.5 as exponent. Also, a process for the fabrication of size-controlled droplets in a viscoelastic continuous phase of an emulsion, and the use of the emulsion in applications requiring size-controlled droplets.
The present invention relates to a method for the manufacture of a water-in-oil-in-water double emulsion comprising a step of adding dropwise an aqueous phase to an oil phase until a catastrophic inversion. The present invention also relates to a water-in-oil-in-water double emulsion, a method for preparing solid microcapsules and solid microcapsules.
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Capsules for chemicals intended for use in industry;
capsules for adhesives [glues] for use in industry/glues for
use in industry; capsules for adhesives and adjuvants other
than for medical or veterinary use; capsules for
antioxidants used during manufacturing operations; capsules
for auxiliary fluids for abrasives; capsules for chemical
catalysts; capsules for chemical preparations for scientific
use other than for medical or veterinary use; capsules for
chemical reagents other than for medical or veterinary use;
capsules for chemicals for the manufacture of paints;
capsules for chemicals for the manufacture of pigments;
color brightening chemicals for industrial use; concrete
preservatives, except paints and oils; capsules for
anti-fogging chemical products; capsules for corrosive
products; capsules for enzyme preparations for industrial
use; glue capsules for use in industry; capsules for
moistening products for use in the textile industry;
capsules for plastifiers; capsules for polish removing
materials.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
05 - Produits pharmaceutiques, vétérinaires et hygièniques
Produits et services
Chemical products for use in industry, agriculture,
horticulture and forestry; soil fertilizers;
fire-extinguishing compositions; chemical reagents other
than for medical or veterinary use; organic compounds. Capsules for products for destroying vermin, fungicides,
herbicides, weedkillers and parasiticides; empty capsules
for products for destroying vermin, fungicides, herbicides,
weedkillers and parasiticides.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Capsules for chemicals intended for use in industry;
capsules for chemical catalysts; capsules for fire
extinguishing compositions; capsules for chemical reagents
other than for medical or veterinary use; capsules for
organic compounds; capsules for tanning materials; capsules
for adhesives intended for use in industry; capsules for
decolorants for industrial use; capsules for adhesives
[glues] for use in industry/glues for use in industry;
capsules for adjuvants other than for medical or veterinary
use; capsules for antioxidants used during manufacturing
operations; capsules for auxiliary fluids for abrasives;
capsules for chemical preparations for scientific use other
than for medical or veterinary use; capsules for chemicals
for the manufacture of paints; capsules for chemicals for
the manufacture of pigments; color-brightening chemicals for
industrial use; capsules for concrete preservatives, except
paints and oils; capsules for anti-fogging chemical
products; capsules for corrosive products; capsules for
enzyme preparations for industrial use; glue capsules for
use in industry; capsules for moistening products for use in
the textile industry; capsules for plastifiers; capsules for
polish removing materials.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Capsules for chemical products for use in industry; capsules
for chemical products for mattifying glass; capsules for
chemical products for tarnishing glass; capsules for
products for opacifying glass.
The present invention relates to an emulsion comprising size-controlled droplets dispersed in a viscoelastic continuous phase comprising a polymer in solution in a solvent, wherein the viscoelastic continuous phase presents a ratio between the viscous modulus (G") and the elastic modulus (G') ranging from 0.2 to 10 and wherein the mean diameter of the droplets is proportional to the G'/G" ratio with 1.5 as exponent. The invention also relates to a process for the fabrication of size-controlled droplets in a viscoelastic continuous phase of an emulsion. The invention still relates to the use of the emulsion in applications requiring size-controlled droplets.
A61K 47/32 - Composés macromoléculaires obtenus par des réactions faisant intervenir uniquement des liaisons non saturées carbone-carbone, p. ex. carbomères
A61K 47/36 - PolysaccharidesLeurs dérivés, p. ex. gommes, amidon, alginate, dextrine, acide hyaluronique, chitosane, inuline, agar-agar ou pectine
A61K 47/34 - Composés macromoléculaires obtenus par des réactions autres que celles faisant intervenir uniquement des liaisons non saturées carbone-carbone, p. ex. polyesters, acides polyaminés, polysiloxanes, polyphosphazines, copolymères de polyalkylène glycol ou de poloxamères
A composition having at least one composition for washing and/or care of fabrics, and at least one solid microcapsule having a mean diameter between 1 μm and 30 μm, with a core consisting of a composition C1 comprising at least one perfuming agent, and a solid crosslinked-polymer envelope totally encapsulating the core at its circumference, wherein the solid envelope comprises a crosslinked polymer obtained by polymerizing at least one monomer or polymer having at least one reactive moiety selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate, and carboxylate moieties, and wherein the thickness of the solid envelope is between 0.1 μm and 20 μm.
The present invention relates to a composition comprising at least one composition for home care, and at least one solid microcapsule having an average diameter of between 1 μm and 30 μm, comprising a core consisting of a composition C1 comprising at least one perfuming agent, and a solid shell of crosslinked polymer totally encapsulating the core at its periphery, said solid shell comprising a crosslinked polymer obtained by polymerization of at least one monomer or polymer bearing at least one reactive function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions, and wherein the thickness of the soli shell is between 0.1 μm and 20 μm.
C08F 2/50 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible avec des agents sensibilisants
The present invention relates to a method for preparing solid capsules comprising a compound A, dispersed in a composition C4. The invention also relates to an encapsulation method, to the capsules obtained by this method, to a composition comprising them, as well as to a method using such capsules.
The present invention relates to a composition comprising: - at least one composition for home care, and - at least one solid microcapsule having an average diameter of between 1 μm and 30 μm, having a core consisting of a composition C1 comprising at least one perfuming agent, and a solid shell of a cross-linked polymer totally encapsulating the core at its periphery, said solid shell comprising a cross-linked polymer obtained by polymerization of at least one monomer or polymer bearing at least one reactive function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions, and wherein the thickness of the solid shell is between 0.1 μm and 20 μm.
The present invention relates to a composition comprising: - at least one composition for washing and/or caring for laundry, and - at least one solid microcapsule having an average diameter of between 1 μm and 30 μm, comprising a core consisting of a composition C1 having at least one perfuming agent, and a solid shell of a cross-linked polymer totally encapsulating the core at its periphery, said solid shell comprising a cross-linked polymer obtained by the polymerization of at least one monomer or polymer bearing at least one reactive function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, vinyl ester, thiolene, maleate, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions, and wherein the thickness of the solid shell is between 0.1 μm and 20 μm.
The present invention relates to a method for preparing solid microcapsules, comprising the following steps a) adding, with stirring, a composition C1 to a polymeric composition C2 comprising at least one aliphatic or aromatic ester or polyester, additionally bearing at least one function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions and mixtures thereof, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in a composition C2; b) adding, with stirring, the emulsion (E1) to a composition C3 whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2) whereby a double emulsion (E3) is obtained comprising droplets of controlled size dispersed in the composition C3; and d) polymerizing the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
B01J 13/18 - Polymérisation in situ où tous les réactifs sont présents dans la même phase
C08F 2/50 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible avec des agents sensibilisants
C08F 2/30 - Polymérisation en émulsion utilisant des agents émulsifiants non ioniques
27.
Method for preparing capsules with improved retention properties and capsules obtained therefrom
The present invention relates to a capsule preparation method for preparing solid microcapsules, comprising the following steps:
a) addition, under agitation, a composition C1, comprising at least one active ingredient, to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained comprising droplets of the composition C1 dispersed in the composition C2;
b) addition, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3;
c) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained comprising size controlled droplets dispersed in the composition C3; and
d) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
C08L 57/00 - Compositions contenant des polymères non spécifiés obtenus par des réactions ne faisant intervenir que des liaisons non saturées carbone-carbone
C08L 87/00 - Compositions contenant des composés macromoléculaires non spécifiés, obtenus autrement que par des réactions de polymérisation ne faisant intervenir que des liaisons non saturées carbone-carbone
29.
Method for preparing capsules comprising at least one water-soluble or hydrophilic substance and capsules obtained therefrom
The present invention relates to a method for preparing solid microcapsules that comprises of the following steps of preparing a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase; adding, under agitation, of the said composition C1 in a polymeric composition C2, the compositions C1 and C2 being immiscible with each other, whereby an emulsion (E1) is obtained; adding, under agitation, of the emulsion (E1) in a composition C3, the compositions C2 and C3 being immiscible with each other, whereby a double emulsion (E2) is obtained; shearing the emulsion (E2), whereby a double emulsion (E3) is obtained; and polymerizing the composition C2, wherein solid microcapsules dispersed in the composition C3 are obtained.
A61K 8/895 - Polysiloxanes contenant du silicium lié à un groupe aliphatique non saturé, p. ex. vinyl diméthicone
A23L 27/00 - ÉpicesAgents aromatiques ou condimentsÉdulcorants artificielsSels de tableSubstituts diététiques du selLeur préparation ou leur traitement
The present invention relates to a method for preparing solid microcapsules, comprising the following steps: a) adding, under agitation, a composition C1, comprising at least one active agent, to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in the composition C2; b) adding, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained comprising controlled-size droplets dispersed in the composition C3; and d) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
Produits et services
Microencapsulated chemical preparations for use in photography; Microencapsulated chemical additives for use in the manufacture of food; Microencapsulated chemicals for use in the manufacture of leather, namely, tannin substances
Microencapsulated coating compositions in the nature of paint for industrial applications; Microencapsulated ink used for leatherwear; Lacquers, namely, lacquers containing microcapsules; Paints, namely, paints containing microcapsules; Printing ink, namely, printing ink containing microcapsules; Varnishes, namely, varnishes containing microcapsules; Clear, microencapsulated coatings used as paints; Microencapsulated colorants for foodstuffs; Microencapsulated food dyes; Microencapsulated rust preservatives in the nature of a coating; Microencapsulated coatings used for painting; Microencapsulated wood preservatives
34.
METHOD FOR PREPARING BIODEGRADABLE CAPSULES AND CAPSULES OBTAINED
The present invention relates to a method for preparing solid microcapsules, comprising the following steps: a) adding, with stirring, a composition C1 to a polymeric composition C2 comprising at least one aliphatic or aromatic ester or polyester, additionally bearing at least one function selected from the group consisting of acrylate, methacrylate, vinyl ether, N-vinyl ether, epoxy, siloxane, amine, lactone, phosphate and carboxylate functions and mixtures thereof, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in the composition C2; b) adding, with stirring, the emulsion (E1) to a composition C3, whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained comprising droplets of controlled size dispersed in the composition C3; and d) polymerizing the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
B01F 3/08 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de liquides avec des liquides; Emulsion
C08F 2/48 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
B01J 13/18 - Polymérisation in situ où tous les réactifs sont présents dans la même phase
35.
METHOD FOR PREPARING CAPSULES COMPRISING AT LEAST ONE WATER-SOLUBLE OR HYDROPHILIC SUBSTANCE AND CAPSULES OBTAINED THEREFROM
The present invention relates to a method for preparing solid microcapsules comprising the following steps: a) preparing a composition C1, comprising at least one water-soluble or hydrophilic substance dispersed in a hydrophobic phase, b) adding, under agitation, said composition C1 to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained; c) adding, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained; d) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained; and e) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
B01F 3/08 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de liquides avec des liquides; Emulsion
C08F 2/48 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
B01J 13/18 - Polymérisation in situ où tous les réactifs sont présents dans la même phase
36.
METHOD FOR PREPARING CAPSULES WITH IMPROVED RETENTION PROPERTIES AND CAPSULES OBTAINED THEREFROM
The present invention relates to a method for preparing solid microcapsules, comprising the following steps: a) adding, under agitation, a composition C1, comprising at least one active agent, to a polymeric composition C2, the compositions C1 and C2 being mutually immiscible, whereby an emulsion (E1) is obtained comprising droplets of composition C1 dispersed in the composition C2; b) adding, under agitation, the emulsion (E1) to a composition C3, the compositions C2 and C3 being mutually immiscible, whereby a double emulsion (E2) is obtained comprising droplets dispersed in the composition C3; c) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained comprising controlled-size droplets dispersed in the composition C3; and d) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
B01F 3/08 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de liquides avec des liquides; Emulsion
C08F 2/48 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
B01J 13/18 - Polymérisation in situ où tous les réactifs sont présents dans la même phase
37.
METHOD FOR PREPARING CAPSULES COMPRISING AT LEAST ONE VOLATILE COMPOUND AND CAPSULES OBTAINED THEREFROM
The present invention relates to a method for preparing solid microcapsules comprising the following steps: a) preparing a composition C1, which is either a composition C1a, comprising a single hydrophobic solid particle, or a composition C1b comprising a plurality of dispersed hydrophobic solid particles in a hydrophilic phase, b) adding, under agitation, the composition C1 to a polymeric composition C2 at a temperature Tb, whereby an emulsion (E1) is obtained; c) adding, under agitation, the emulsion (E1) to a composition C3 at a temperature Tc, whereby a double emulsion (E2) is obtained; d) applying shear to the emulsion (E2), whereby a double emulsion (E3) is obtained; and e) polymerising the composition C2, whereby solid microcapsules dispersed in the composition C3 are obtained.
B01F 3/08 - Mélange, p.ex. dispersion, émulsion, selon les phases à mélanger de liquides avec des liquides; Emulsion
C08F 2/48 - Polymérisation amorcée par énergie ondulatoire ou par rayonnement corpusculaire par la lumière ultraviolette ou visible
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
B01J 13/18 - Polymérisation in situ où tous les réactifs sont présents dans la même phase
38.
Method for preparing microcapsules by double emulsion
A method for preparing solid microcapsules, comprising the steps of adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, the active material is not an additive to be used in the lubricant, fuel or bitumen industries, drilling sludges or muds, or oil exploration/production, compositions C1 and C2 being immiscible with each other. A first emulsion is obtained comprising droplets of composition C1 dispersed in composition C2, adding under agitation the first emulsion to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, to obtain a second emulsion comprising droplets dispersed in composition C3. Loading the second emulsion in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s-1 to 100 000 s-1, to obtain a third emulsion comprising droplets dispersed in composition C3, and cross-linking the droplets so that solid microcapsules dispersed in composition C3 are obtained.
A23K 40/30 - Mise en forme ou traitement des produits alimentaires pour animaux par encapsulationMise en forme ou traitement des produits alimentaires pour animaux par revêtement
B01F 9/20 - Mélangeurs à récipients rotatifs tournant autour d'un axe vertical à cylindres
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
(57) Abstract: The present invention relates to a process for preparing solid microcapsules comprising the following steps: a) adding, with stirring, a composition Cl comprising at least one active agent to a photocrosslinkable polymer composition C2, whereby an emulsion (El) is obtained; b) adding, with stirring, the emulsion (El) to a composition C3, the viscosity of the composition C3 being greater than 2000 mPa.s at 25°C, whereby a double emulsion (E2) is obtained; c) applying a shear to the emulsion (E2), said applied shear rate being less than 1000 s’1, whereby a double emulsion (E3) is obtained; and d) photopolymerizing the composition C2.
The present invention relates to a method for preparing solid microparticles and microcapsules, the method comprising the following steps: (a) adding while stirring a composition C’2 to a composition C3, the compositions C’2 and C3 being immiscible, the composition C’2 being either a single-phase crosslinkable composition C2 or an emulsion (E1) comprising droplets of a composition C1, comprising at least one active substance, the droplets being dispersed in a crosslinkable polymer composition C2, the compositions C1 and C2 being immiscible, the viscosity of the composition C3 being of more than 10’000 mPA.s at 25°C at a shearing speed of 10 s-1 and of less than 10’000 mPA.s at 25° at a shearing speed ranging from 100 s-1 to 100’000 s-1, an emulsion (E2) being obtained in this process; (b) applying shearing forces to the emulsion (E2), the applied shearing speed being of less than 1’000 s-1, an emulsion (E3) being obtained in this process; and (c) polymerising the composition C’2.
The present invention relates to a process for preparing solid microcapsules comprising the following steps: a) adding, with stirring, a composition C1 comprising at least one active agent to a photocrosslinkable polymer composition C2, whereby an emulsion (E1) is obtained; b) adding, with stirring, the emulsion (E1) to a composition C3, the viscosity of the composition C3 being greater than 2000 mPa.s at 25°C, whereby a double emulsion (E2) is obtained; c) applying a shear to the emulsion (E2), said applied shear rate being less than 1000 s-1, whereby a double emulsion (E3) is obtained; and d) photopolymerizing the composition C2.
01 - Produits chimiques destinés à l'industrie, aux sciences ainsi qu'à l'agriculture
02 - Couleurs, vernis, laques
03 - Produits cosmétiques et préparations de toilette; préparations pour blanchir, nettoyer, polir et abraser.
04 - Huiles et graisses industrielles; lubrifiants; combustibles
05 - Produits pharmaceutiques, vétérinaires et hygièniques
Produits et services
Adhesives for use in industry; Starches for use in manufacturing and industry; Chemical and organic compositions for use in the manufacture of food and beverages; Detergents for use in manufacture and industry; Putties, and fillers and pastes for use in industry; Unprocessed plastics; Filtering materials [chemical, mineral, vegetable and other unprocessed materials]; Growing media, fertilizers and chemicals for use in agriculture, horticulture and forestry; Chemical preparations and materials for film, photography and printing; Unprocessed artificial and synthetic resins; Chemical substances, chemical materials and chemical preparations, and natural elements; Fertilisers, and chemicals for use in agriculture, horticulture and forestry; Unprocessed and synthetic resins. Coatings; Thinners and thickeners for coatings, dyes and inks; Raw natural resins; Dyes, colorants, pigments and inks. Abrasives; Tailors' and cobblers' wax; Essential oils and aromatic extracts; Toiletries; Cleaning and fragrancing preparations; Animal grooming preparations; Abraders. Electrical energy; Fuels and illuminants; Dust controlling compositions; Lubricants and industrial greases, waxes and fluids. Dietary supplements and dietetic preparations; Sanitary preparations and articles; Dental preparations and articles, and medicated dentifrices; Pest control preparations and articles; Hygienic preparations and articles; Dental preparations and articles; Medical dressings, coverings and applicators; Diagnostic preparations and materials; Fodder additives for medical purposes; Medicated additives for animal foods; Medical adhesives for binding internal tissue; Medical adhesives for binding wounds.
The present invention relates to a method for preparing solid microcapsules (20), comprising the steps of: a) adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, wherein the active material is not an additive to be used in the lubricant, fuel or bitumen industries, or in drilling sludges or muds, or an additive to be used in oil exploration/production, composition C1 and composition C2 being immiscible with each other, so that a first emulsion is obtained, said first emulsion comprising droplets (1) of composition C1 dispersed in composition C2, b) adding under agitation the first emulsion obtained in step a) to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, so that a second emulsion is obtained, said second emulsion comprising droplets (5) dispersed in composition C3, c) loading the second emulsion obtained in step b) in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s-1 to 100 000 s-1, so that a third emulsion is obtained, said third emulsion comprising droplets (10) dispersed in composition C3, and d) cross-linking the droplets (10) obtained in step c), so that solid microcapsules (20) dispersed in composition C3 are obtained.
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
45.
METHOD FOR PREPARING MICROCAPSULES BY DOUBLE EMULSION
The present invention relates to a method for preparing solid microcapsules (20), comprising the steps of: a) adding under agitation a composition C1 comprising at least one active material to a cross-linkable liquid composition C2, wherein the active material is not an additive to be used in the lubricant, fuel or bitumen industries, or in drilling sludges or muds, or an additive to be used in oil exploration/production, composition C1 and composition C2 being immiscible with each other, so that a first emulsion is obtained, said first emulsion comprising droplets (1) of composition C1 dispersed in composition C2, b) adding under agitation the first emulsion obtained in step a) to a liquid composition C3, composition C3 and composition C2 being immiscible with each other, so that a second emulsion is obtained, said second emulsion comprising droplets (5) dispersed in composition C3, c) loading the second emulsion obtained in step b) in a mixer which applies a homogeneous controlled shear rate to said second emulsion, said shear rate being from 1 000 s-1 to 100 000 s-1, so that a third emulsion is obtained, said third emulsion comprising droplets (10) dispersed in composition C3, and d) cross-linking the droplets (10) obtained in step c), so that solid microcapsules (20) dispersed in composition C3 are obtained.
F28D 20/02 - Appareils ou ensembles fonctionnels d'accumulation de chaleur en généralAppareils échangeurs de chaleur de régénération non couverts par les groupes ou utilisant la chaleur latente
