公开(公告)号：WO2019126913A1

公开(公告)日：2019-07-04

申请号：PCT/CN2017/118186

申请日：2017-12-25

申请人： WACKER CHEMIE AG ,  WANG, Feng (Walter)

发明人： WANG, Feng (Walter) ,  CHEN, Honggang (Henry) ,  HUANG, Lingyun (Roy) ,  JIA, Xiaohui (Jesse) ,  ZHU, Liliang (Eric)

IPC分类号： C08F218/08 ,  C08F2/00 ,  C08F210/02 ,  C08F2/24 ,  C08F2/30 ,  C08F2/22

CPC分类号： C08F2/24 ,  C08F2/001 ,  C08F2/26 ,  C08F2/30 ,  C08F4/40 ,  C08F218/08 ,  C08F210/02

摘要： The invention relates to a method for preparing an aqueous dispersion of a copolymer comprising polymerized comonomers vinyl ester and ethylene, characterized in that ethylene and the vinyl ester are charged in multiple steps, where the initial charge ratio of ethylene to the vinyl ester is 0.2 to 0.6:1; and the vinyl ester is copolymerized with ethylene in the presence of a) anionic surfactant 1, which has the following chemical formula: C n H 2n+1 O-EO x -PO y -Q (I), where n is an integer between 6 and 44, inclusive; x is an integer between 0 and 11, inclusive; y is an integer between 0 and 11, inclusive; at least one of x and y is non-zero; and Q is any one selected from among sulphate, sulfonate, carboxylate and phosphate salts.