申请人:Uniroyal Inc.
公开号:US03983139A1
公开(公告)日:1976-09-28
Chain extended polyurethanes are prepared, using certain 3-(hydroxyhydrocarbylsecondaryamino)thiophene 1,1-dioxides, some of which are new chemicals. E.g., 3-(2-hydroxypropylamino)tetrahydrothiophene 1,1-dioxide is especially useful as a chain extender for high resiliency, flexible polyurethane foams.
通过使用某些3-(羟基烷基次氨基)噻吩1,1-二氧化物,可以制备链延长型聚氨酯,其中一些是新的化学物质。例如,3-(2-羟丙基氨基)四氢噻吩1,1-二氧化物特别适用作为高回弹性、柔韧性聚氨酯泡沫的链延长剂。