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1. (WO2018100179) PROCESS FOR PREPARING MICROCAPSULES OF CONTROLLED SIZE COMPRISING A PHOTOPOLYMERIZATION STEP
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Pub. No.: WO/2018/100179 International Application No.: PCT/EP2017/081227
Publication Date: 07.06.2018 International Filing Date: 01.12.2017
IPC:
C08F 290/06 (2006.01) ,B01J 13/18 (2006.01) ,C08F 2/22 (2006.01)
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
290
Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups
02
on to polymers modified by introduction of unsaturated end groups
06
Polymers provided for in subclass C08G52
B PERFORMING OPERATIONS; TRANSPORTING
01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS, COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
13
Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
02
Making microcapsules or microballoons
06
by phase separation
14
Polymerisation, crosslinking
18
In situ polymerisation with all reactants being present in the same phase
C CHEMISTRY; METALLURGY
08
ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
2
Processes of polymerisation
12
Polymerisation in non-solvents
16
Aqueous medium
22
Emulsion polymerisation
Applicants:
CALYXIA [FR/FR]; 10 rue Vauquelin 75005 PARIS, FR
Inventors:
WALTERS, Jamie; FR
DEMOULIN, Damien; FR
Agent:
BLOT, Philippe; FR
COLOMBIE, Damien; FR
HABASQUE, Etienne; FR
HOLTZ, Béatrice; FR
DOMENEGO, Bertrand; FR
NEYRET, Daniel; FR
Priority Data:
16 6178701.12.2016FR
Title (EN) PROCESS FOR PREPARING MICROCAPSULES OF CONTROLLED SIZE COMPRISING A PHOTOPOLYMERIZATION STEP
(FR) PROCÉDÉ DE PRÉPARATION DE MICROCAPSULES DE TAILLE CONTRÔLÉE COMPRENANT UNE ÉTAPE DE PHOTOPOLYMÉRISATION
Abstract:
(EN) 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.
(FR) La présente invention concerne un procédé de préparation de microcapsules solides comprenant les étapes suivantes : a) l'addition sous agitation d'une composition C1, comprenant au moins un actif, dans une composition polymérique photoréticulable C2, ce par quoi on obtient une émulsion (E1); b) l'addition sous agitation de l'émulsion (E1) dans une composition C3, la viscosité de la composition C3 étant supérieure à 2 000 mPa.s à 25°C, ce par quoi on obtient une émulsion double (E2); c) l'application d'un cisaillement à l'émulsion (E2), ladite vitesse de cisaillement appliquée étant inférieure à 1000 s-1, ce par quoi on obtient une émulsion double (E3); et d) la photopolymérisation de la composition C2.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: French (FR)
Filing Language: French (FR)