Patent ID: 6864328
Filing Date: 2005-03-08
Classification: H01B,H01M,Y02E

Abstract:
1. A process for preparing polyether poly(N-substituted urethane) having a polyether unit of formula (1) and a urethane unit of formula (2), comprising: (a) reacting a polyether polyurethane having a weight average molecular weight of 50,000 to 2,000,000 which polyurethane comprises a polyether unit and a urethane unit, with alkaline organic metal salt to produce polyether polyurethane metal salt; and (b) reacting the polyether polyurethane metal salt with an alkylating agent selected from tosylate and mesylate to substitute on N-position, wherein R is a hydrogen atom or alkyl; R 1 , R 2 and R 3 are optionally alkyl, aryl, alkylaryl or oligoethylene oxide derivatives and at least one of R 1 , R 2 and R 3 is oligoethylene oxide derivative; I is isocyanate; E is glycol having less than 400 of number average molecular weight or amine; m is an integer of 2-4; n is an integer of 1-60; and x is an integer of 1-5.