申请人:Gärtner Martin
公开号:US20120157701A1
公开(公告)日:2012-06-21
A process for preparing siloxy carboxylates is characterized by reaction of C
2
-C
10
-monocarboxylic acids with halosiloxanes of the general formula (I),
Hal-(SiR
2
—O)
x
—SiR
3
(I)
in which
Hal is the same or different and is fluorine, chlorine, bromine or iodine,
R is hydrogen, C
1
-C
10
-alkyl or C
6
-C
14
-aryl and
x is an integer from 1 to 20,
to form hydrogen halide in the presence of an auxiliary base, in which the auxiliary base forms, with the hydrogen halide, a salt which forms two immiscible phases with the siloxy carboxylate or the solution of the siloxy carboxylate in a suitable solvent and is removed by a liquid-liquid separation. The process enables simple and economically viable preparation of siloxy carboxylates.
一种制备硅氧羧酸酯的方法,其特征在于将C2-C10-单羧酸与一般式(I)的卤代硅氧烷发生反应,其中Hal-(SiR2—O)x—SiR3(I),其中Hal是相同或不同的氟、氯、溴或碘,R是氢、C1-C10-烷基或C6-C14-芳基,x为1至20的整数,以形成氢卤素在辅助碱的存在下,其中辅助碱与氢卤素形成盐,与硅氧羧酸酯或硅氧羧酸酯在适当溶剂中的溶液形成两个不相溶的相,并通过液-液分离去除。该方法实现了硅氧羧酸酯的简单和经济可行的制备。