Verfahren zur Herstellung von Alkoxypolyglycol(meth)acrylaten

摘要

The invention relates to a transesterification process for the preparation of (meth)acrylates of the formula (I), in which A is a radical selected from the group comprising -CH2CH2-, -CH2CH2CH2-, (A), (B), R' is a straight-chained or branched alkyl radical, optionally substituted with an aryl radical or an aryloxy radical and having 1 to 28 carbon atoms or for a radical (C), R'' is hydrogen or methyl and n is an integer from 2 to 250, in a transesterification reaction, during which there is transesterification of a (meth)acrylate of the formula (II), in which R is a lower alkyl radical and R'' has the above meanings in the presence of a transesterification catalyst comprising calcium hydroxide (Ca(OH)2) or consisting of calcium hydroxide in association with lithium chloride with an alcohol of the formula (III) R'''-(O-A-)n-OH, in which R''' is hydrogen or the radical R', and A and n have the above meanings.