申请人:Evonik Degussa GmbH
公开号:US20180258109A1
公开(公告)日:2018-09-13
The present invention relates to a process for preparing a tris[3-(alkoxysilyl)propyl] isocyanurate from the group of tris[3-(trialkoxysilyl)propyl] isocyanurate, tris[3-(alkyldialkoxysilyl)propyl] isocyanurate and tris[3-(dialkylalkoxysilyl)propyl] isocyanurate by hydrosilylation,
by
in step A initially charging a mixture comprising 1,3,5-triallyl-1,3,5-triazine-2,4,6(1H,3H,5H)-trione as olefin component, at least one carboxylic acid and a Pt catalyst, heating the mixture to a temperature of 50 to 140° C.,
in step B adding at least one hydroalkoxysilane from the group of hydrotrialkoxysilane, hydroalkyldialkoxysilane, hydrodialkylalkoxysilane [called H-silane(s) for short] to the mixture from step A while mixing,
in step C leaving the mixture from step B to react while mixing, with addition of at least a defined amount of alcohol to the mixture as further cocatalyst, and
in step D working up the product mixture thus obtained.
本发明涉及一种通过氢硅烷化反应从三[3-(烷氧基硅基)丙基]异氰酸酯类化合物群中制备三[3-(烷氧基硅基)丙基]异氰酸酯的方法,其中在步骤A中,首先向包含1,3,5-三烯基-1,3,5-三嗪-2,4,6(1H,3H,5H)-三酮作为烯烃组分、至少一种羧酸和Pt催化剂的混合物中充入混合物,并将混合物加热至50至140°C的温度;在步骤B中,向步骤A中的混合物中加入来自羟基三烷氧基硅烷、羟基烷基二烷氧基硅烷、羟基二烷基烷氧基硅烷类群的至少一种羟基硅烷(简称H-硅烷),并在搅拌的同时混合;在步骤C中,将步骤B中的混合物在搅拌的同时留置反应,同时向混合物中添加至少一定量的醇作为进一步的共催化剂;在步骤D中,处理得到的产品混合物。