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1. (WO2012045944) CONTROLLED FREE-RADICAL POLYMERIZATION OF N-VINYL LACTAMS IN AN AQUEOUS MEDIUM
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/045944    International Application No.:    PCT/FR2011/052185
Publication Date: 12.04.2012 International Filing Date: 22.09.2011
IPC:
C08F 293/00 (2006.01), C08F 2/38 (2006.01), C08F 4/40 (2006.01), C08F 226/10 (2006.01)
Applicants: RHODIA OPERATIONS [FR/FR]; 40, rue de la Haie Coq F-93306 Aubervilliers (FR) (For All Designated States Except US).
CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE (CNRS) [FR/FR]; 3, rue Michel Ange F-75016 Paris (FR) (For All Designated States Except US).
DESTARAC, Mathias [FR/FR]; (FR) (For US Only).
GUINAUDEAU, Aymeric [FR/FR]; (FR) (For US Only).
MAZIERES, Stéphane [FR/FR]; (FR) (For US Only).
WILSON, James [GB/FR]; (FR) (For US Only)
Inventors: DESTARAC, Mathias; (FR).
GUINAUDEAU, Aymeric; (FR).
MAZIERES, Stéphane; (FR).
WILSON, James; (FR)
Agent: BLOT, Philippe; Cabinet Lavoix 2, place d'Estienne d'Orves F-75441 Paris Cedex 09 (FR)
Priority Data:
1057770 27.09.2010 FR
Title (EN) CONTROLLED FREE-RADICAL POLYMERIZATION OF N-VINYL LACTAMS IN AN AQUEOUS MEDIUM
(FR) POLYMÉRISATION RADICALAIRE CONTRÔLÉE DE N-VINYL LACTAMES EN MILIEU AQUEUX
Abstract: front page image
(EN)The present invention relates to a method for preparing a polymer containing N-vinyl lactam monomer units, including a step (E) of carrying out the controlled free-radical polymerization of a composition including: monomers containing (mostly consisting of) N-vinyl lactam monomers, which are identical or different (and generally identical); a free-radical polymerization control agent, e.g. one that includes a thiocarbonylthio group -S(C=S)-; and a free-radical polymerization initiator that is a redox system, including a reducing agent (Red) and an oxidizing agent (Ox).
(FR)La présente invention concerne un procédé de préparation d'un polymère à base d'unités monomères N-vinyl lactames, qui comprend une étape (E) de polymérisation radicalaire contrôlée d'une composition comprenant : des monomères contenant (et le plus souvent consistant en) des monomères N-vinyl lactame, identiques ou différents (et généralement identiques); un agent de contrôle de la polymérisation radicalaire, par exemple comprenant un groupe thiocarbonylthio -S(C=S)-; et un initiateur de la polymérisation radicalaire qui est un système redox, comprenant un agent réducteur (Red) et un agent oxydant (Ox).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, 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 (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (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, ML, MR, NE, SN, TD, TG).
Publication Language: French (FR)
Filing Language: French (FR)