Patent ID: 8664331
Filing Date: 2014-03-04
Classification: B01F,C08G

Abstract:
1. A polyurethane polymer comprising from 35% to 90% by weight of a poly (C 2-4 -alkylene oxide) based on the total weight of the polyurethane polymer wherein not less than 60% by weight of the total poly (C 2-4 -alkylene oxide) is poly (ethylene oxide) and wherein at least 5% poly (C 2-4 -alkylene oxide) based on the total weight of the polyurethane polymer is incorporated in lateral chains, which lateral chains are characterized as poly(C 2-4 -alkylene oxide) chains with at least two groups, which react with isocyanates, which are located at the one end of the chain such that said chains are laterally disposed in relation to the polyurethane polymer backbone, wherein said polyurethane polymer has a number average molecular weight of not less than 2,000 and not greater than 50,000 g/mole and which polyurethane polymer contains from 10 to 180 milli-equivalents of acid groups for each 100 gm polyurethane when the polyurethane polymer contains from 35 to 45% by weight poly (alkylene oxide).