公开(公告)号：US4794139A

公开(公告)日：1988-12-27

申请号：US910054

申请日：1986-09-22

申请人： Jennifer T. Braden ,  Gary L. Burroway ,  Herbert L. Bullard ,  Donald A. Tedeschi

发明人： Jennifer T. Braden ,  Gary L. Burroway ,  Herbert L. Bullard ,  Donald A. Tedeschi

IPC分类号： C08F220/06 ,  C08F220/18 ,  C08L33/02 ,  C08L33/10 ,  C09D7/00 ,  C09D125/02 ,  C08L37/00

CPC分类号： C09D7/002 ,  C08F220/06 ,  C08F220/18 ,  C09D125/02 ,  C08L33/02 ,  C08L33/10

摘要： This invention relates to a thixotropic thickening agent and to a process for preparing the same. Such thixotropic thickening agents are particularly useful for thickening water reducible coatings. The thixotropic thickening agents of this invention are copolymers which are comprised of repeat units which are derived from methacrylic acid monomer, ethylacrylate monomer, and a water soluble crosslinking agent. The water soluble crosslinking agents which can be used include ethylene glycol dimethacrylate and alkylene bisacrylamides, such as N,N'-methylene bisacrylamide. A neutralized two weight percent aqueous solution of the thixotropic thickening agents of this invention will have a Brookfield RVT viscosity as measured at 50 rpm using a number 3 spindle within the range of 50 to 2000 centipoise (cps).

摘要翻译： 本发明涉及触变增稠剂及其制备方法。 这种触变增稠剂特别可用于增稠可水稀释涂料。 本发明的触变增稠剂是由甲基丙烯酸单体，丙烯酸乙酯单体和水溶性交联剂衍生的重复单元组成的共聚物。 可以使用的水溶性交联剂包括乙二醇二甲基丙烯酸酯和亚烷基双丙烯酰胺，例如N，N'-亚甲基双丙烯酰胺。 本发明的触变性增稠剂的中和的2重量％水溶液将具有在50rpm至2000厘泊（cps）范围内的3号心轴以50rpm测量的Brookfield RVT粘度。