公开(公告)号：US6020438A

公开(公告)日：2000-02-01

申请号：US094243

申请日：1998-06-09

申请人： Alexander V. Lubnin ,  John E. Fitzwater ,  Vic Stanislawczyk ,  Michael W. Topp

发明人： Alexander V. Lubnin ,  John E. Fitzwater ,  Vic Stanislawczyk ,  Michael W. Topp

IPC分类号： C08F257/00 ,  C08F259/04 ,  C08F14/00 ,  C08F14/16 ,  C08F114/16 ,  C08F259/06

CPC分类号： C08F257/00 ,  Y10S525/902

摘要： An emulsion polymer comprising as one of its components a graft copolymer of a residual aromatic monomer-free support resin polymer and a vinyl chloride (co)polymer is disclosed. The emulsion polymer is prepared using a two-stage process. In the first stage, a chasing monomer is reacted in the presence of a support resin polymer having at least one aromatic monomer to form an polymer which is free of residual monomer and has monomeric units derived from the aromatic monomer(s). In a second stage, the vinyl chloride emulsion (co)polymer is made in situ in a reaction mixture comprising the polymer which is free of residual monomer. An extensive grafting at the second stage yields a novel water dispersible graft copolymer containing both styrene and vinyl chloride.

摘要翻译： 公开了一种乳液聚合物，其包含作为其组分之一的残留的不含芳族单体的载体树脂聚合物和氯乙烯（共）聚合物的接枝共聚物。 使用两步法制备乳液聚合物。 在第一阶段中，在具有至少一种芳族单体的载体树脂聚合物的存在下，使追逐单体反应，形成不含残余单体且具有源自芳族单体的单体单元的聚合物。 在第二阶段中，氯乙烯乳液（共）聚合物在包含不含残余单体的聚合物的反应混合物中原位制备。 在第二阶段的广泛接枝得到含有苯乙烯和氯乙烯的新型水分散性接枝共聚物。