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1. (WO2018197885) BRANCHED POLYMERS
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Pub. No.: WO/2018/197885 International Application No.: PCT/GB2018/051106
Publication Date: 01.11.2018 International Filing Date: 26.04.2018
IPC:
C08F 2/38 (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
2
Processes of polymerisation
38
Polymerisation using regulators, e.g. chain terminating agents
Applicants:
THE UNIVERSITY OF LIVERPOOL [GB/GB]; Foundation Building 765 Brownlow Hill Liverpool L69 7ZX, GB
Inventors:
RANNARD, Steve; GB
CHAMBON, Pierre; GB
CASSIN, Savannah; GB
Agent:
HINDLES LIMITED; Clarence House 131-135 George Street Edinburgh EH2 4JS, GB
Priority Data:
1706658.026.04.2017GB
Title (EN) BRANCHED POLYMERS
(FR) POLYMÈRES RAMIFIÉS
Abstract:
(EN) A method of preparing a branched polymer comprises the free radical polymerisation of a multivinyl monomer in the presence of a chain transfer agent, using a source of radicals, wherein the extent of propagation is controlled relative to the extent of chain transfer to prevent gelation of the polymer. The average length of each vinyl polymer chain within the product is short.
(FR) L'invention concerne un procédé de préparation d'un polymère ramifié qui comprend la polymérisation radicalaire d'un monomère polyvinylique en présence d'un agent de transfert réversible de chaîne, à l'aide d'une source de radicaux, l'étendue de propagation étant réglée par rapport à l'étendue de transfert de chaîne pour empêcher la gélification du polymère. La longueur moyenne de chaque chaîne de polymère vinylique dans le produit est courte.
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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: English (EN)
Filing Language: English (EN)