-
1.发明申请公开(公告)号：US20190112323A1
公开(公告)日：2019-04-18
申请号：US16161859
申请日：2018-10-16
申请人： Evonik Degussa GmbH
摘要： A process can prepare a colourless, methanolic solution of 3-(N-benzyl-2-aminoethyl)aminopropyltrimethoxysilane hydrochloride. The process includes, in step 1 fractionally distilling the vinylbenzyl chloride reactant component with addition of at least one stabilizer, and in step 2, metering and mixing the distillate (vinylbenzyl chloride) from step 1 into an initial charge of N-(2-aminoethyl)-3-aminopropyltrimethoxysilane and methanol in a molar ratio of the N-(2-aminoethyl)-3-aminopropyltrimethoxysilane to vinylbenzyl chloride of 1.0:0.80 to 1.0:1.15 and at a temperature in the range from 40 to 60° C. and leaving them to react further. The colourless, methanolic solution has an APHA colour number of
-
公开(公告)号：US20180127442A1
公开(公告)日：2018-05-10
申请号：US15576289
申请日：2016-04-01
申请人： Evonik Degussa GmbH
CPC分类号： C07F7/1804 , B01D3/42 , B01J19/0013 , C03C25/66 , C07B41/02 , C07C29/09 , C07C31/04 , C07C31/08 , C07F7/1892 , C08G77/00 , C08G77/26
摘要： The present invention relates to a process for preparing aqueous hydrolysates of aminoalkyltrialkoxysilanes by (a) initially charging water, optionally heating, (b) adding hydrolysable silanes consisting of at least one aminoalkyltrialkoxysilane in an amount which provides a molar ratio of water to total amount of aminoalkyltrialkoxysilane of 10.5 to 20, and (c) distilling off the alkyl alcohol formed in the reaction, wherein the solids content in an aqueous composition thus prepared is 30% to 55% by weight, based on the composition, and the aqueous solution has a total content of free and bound alkyl alcohol of not more than 1% by weight, based on the composition.
-
搜索结果
2 条记录 (耗时 0.012 秒)
