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    • 4. 发明申请
    • Low viscosity, alkoxysilane-functional prepolymers and a process for their preparation
    • 低粘度烷氧基硅烷功能预聚物及其制备方法
    • US20070055035A1
    • 2007-03-08
    • US11512487
    • 2006-08-30
    • Michael LudewigMathias MatnerFrank Kobelka
    • Michael LudewigMathias MatnerFrank Kobelka
    • C08L83/04C08G77/06C08G77/04B32B27/00
    • C08G18/718C08G18/4825C08G2190/00
    • 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 polyQxyalkylene 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.
    • 本发明涉及通过使A)1.0当量的多元醇组分的数均分子量为3000g / mol至20,000g / mol并含有一种或多种聚亚烷基多元醇或聚氧化烯多元醇预聚物来制备烷氧基硅烷官能预聚物的方法 其中B)1.05至1.50当量的式I)的异氰酸酯和烷氧基硅烷官能化合物,其中X,Y和Z彼此独立地为直链或支链C 1 -C 8 C 1 -C 12烷基或C 1 -C 8烷氧基,其中至少一个基团是C 1 -C 3亚烷基 > 8个烷氧基,R是官能度至少为2的有机基团,随后通过醛基化反应或通过与C)异氰酸酯反应性组分的反应进一步使剩余的游离NCO基团反应。 本发明还涉及通过本发明的方法获得的烷氧基硅烷官能的预聚物。