公开(公告)号：EP1218427B2

公开(公告)日：2012-05-02

申请号：EP00947138.4

申请日：2000-07-07

申请人： COATEX S.A.S.

发明人： LE-KHAC, Bi ,  WANG, Wei ,  SHAWL, Edward, T.

IPC分类号： C08F220/64 ,  C08F265/06 ,  C08F265/04 ,  C08F267/02 ,  C08F265/02 ,  C08F290/06

CPC分类号： C08F2/06 ,  C08F290/062

摘要： A continuous process for making a comb-branched copolymer of an acrylic monomer and a polyether macromonomer is disclosed. The process is performed by continuously feeding a reaction zone with a monomer stream that contains an acrylic acid and a polyether macronomer, and an initiator stream. The comb-branched copolymer made thereby performs better as water reducing agent in cement compared to that made by a batch process.