专利检索 ap:("TEXTRON INC") AND inv:"HELM J" 第 1 页

1.

发明授权
Aqueous chain extension of nco prepolymer with tertiary amino polyol using nonionic surfactant,and aqueous dispersion produced 失效
标题翻译：使用非离子表面活性剂和水性分散体的NCO预聚物与碱性氨基多元醇的水链延伸

公开(公告)号：US3781238A

公开(公告)日：1973-12-25

申请号：US3781238D

申请日：1971-08-04

申请人： TEXTRON INC

发明人： HELM J

IPC分类号： C08G18/10 , C09D5/02 , C08G22/14

CPC分类号： C08G18/10 , C08G18/3281 , C08G18/3275

摘要： THERE IS DISCLOSED A METHOD FOR PREPARING AN AQUEOUS DISPERSION FROM A FREE ISOCYANATE GROUP-CONTAINING POLYURETHANE PREPOLYMER MADE FROM DIISOCYANATE AND POLYOXYPROPYLENE POLYCOL OR POLYOXYBUTYLENE POLYOL. THE PREPOLYMER IS REACTED WITH A DEFINED TERTIARY AMINOPOLYCOL, E.G., METHYL DIETHANOLAMINE, IN THE PRESENCE OF A HYDROXYL-CONTAINING, NONIONIC SURFACE-ACTING AGENT AND WATER. THE RESULTING AQUEOUS DISPERSION OF POLYURETHANE IS PARTICULARLY USEFUL AS A COATING FOR VARIOUS SOLID SUBSTRATES.