首页>
外国专利>
niedrigviskose alkoxysilangruppenaufweisende prepolymere, a method for their manufacture and their use
niedrigviskose alkoxysilangruppenaufweisende prepolymere, a method for their manufacture and their use
展开▼
机译:Niedrigviskose烷氧基硅树脂双酚A魏森德预聚物,其制备方法和用途
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention relates to a process for preparing alkoxysilane-functional prepolymers by reacting A) 1.0 equivalent of a polyol component have a number average molecular weight of 3000 g/mol to 20,000 g/mol and containing one or more polyoxyalkylene polyols or polyoxyalkylene polyol prepolymers with B) 1.05 to 1.50 equivalent of an isocyanate- and alkoxysilane-functional compound of formula I) wherein X, Y, and Z independently of one another are linear or branched C1-C8 alkyl or C1-C8 alkoxy radicals, wherein at least one of the radicals is a C1-C8 alkoxy group and R is an organic radical having a functionality of at least two, and subsequently further reacting the remaining free NCO groups by allophanatization or by reaction with C) an isocyanate-reactive component. The present invention also relates to the alkoxysilane-functional prepolymers obtained by the process of the invention.
展开▼