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1. (WO2010112750) METHOD FOR PREPARING A SUPERPLASTICIZER
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2010/112750    International Application No.:    PCT/FR2010/050578
Publication Date: 07.10.2010 International Filing Date: 30.03.2010
IPC:
C08G 81/00 (2006.01), C04B 24/24 (2006.01), B01F 17/00 (2006.01)
Applicants: CHRYSO [FR/FR]; 19 Place de la Résistance F-92440 Issy Les Moulineaux (FR) (For All Designated States Except US).
DESSEROIR, Alexandre [FR/FR]; (FR) (For US Only).
MAITRASSE, Philippe [FR/FR]; (FR) (For US Only)
Inventors: DESSEROIR, Alexandre; (FR).
MAITRASSE, Philippe; (FR)
Agent: JACOBSON, Claude; Cabinet Lavoix 2 Place d'Estienne d'Orves F-75441 Paris Cedex 09 (FR)
Priority Data:
0952098 01.04.2009 FR
Title (EN) METHOD FOR PREPARING A SUPERPLASTICIZER
(FR) PROCÉDÉ DE PRÉPARATION DE SUPERPLASTIFIANTS
Abstract: front page image
(EN)The invention mainly relates to a method for preparing polyalkoxylated polycarboxylates in which is reacted, in the presence of water and a catalyst, at a temperature of 120 to 250°C: at least one polycarboxylic acid produced by polymerizing at least one unsaturated carboxylic acid; and at least one polyether having a free hydroxyl group capable of reacting with a carboxylic function of said polycarboxylic acid, characterized in that the catalyst is an alkaline or alkaline-earth salt of a strong protic acid.
(FR)L'invention vise principalement un procédé de préparation de polycarboxylates polyalkoxylés dans lequel l'on fait réagir, en présence d'eau et d'un catalyseur, à une température comprise entre 120 et 250 °C : - au moins un acide polycarboxylique obtenu par polymérisation d'au moins un acide carboxylique insaturé; et au moins un polyéther portant un groupe hydroxyle libre capable de réagir avec une fonction carboxylique dudit acide polycarboxylique, caractérisé en ce que le catalyseur est un sel alcalin ou alcalin-terreux d'un acide protique fort.
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, RO, RS, RU, 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 (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, 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)