公开(公告)号：EP2448992A1

公开(公告)日：2012-05-09

申请号：EP09846687.3

申请日：2009-07-01

申请人： Rhodia (China) Co., Ltd.

发明人： LIU, Zhaoqing ,  LIN, Daobing ,  LI, Qiaobo

IPC分类号： C08G63/66 ,  C11D1/74

CPC分类号： C11D3/3715 ,  C08G63/672 ,  C08G63/81 ,  C11D3/0036

摘要： The present invention discloses a process for producing a polyether-polyester block copolymer with a di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid, an aliphatic diol or aliphatic polyol and a polyether having at least one terminal hydroxyl group in an inert solvent. In the present invention, the inert solvent 5 is used to prevent the di(C 1-C 4)alkyl ester of aromatic dicarboxylic acid from sublimation instead of excessive polyol, such that the subsequent removal of excessive polyol under high temperature and high vacuum is avoided.