초록

Process for the production of end-capped nonionic surfactants by forming an alcoholate between a fatty alcohol polyglycol ether and a solid base, reacting the alcoholate with a dialkyl sulfate, adding water to initiate phase separation, and separating the organic layer from the aqueous layer.

대표청구항 ▼

[ We claim:] [1.] A process for the production of end-capped nonionic surfactants corresponding to formula (I): [ STR 3 ] in which R.sup.1 is an alkyl or alkenyl group containing 6 to 22 carbon atoms, n1 and n2 independently of one another are 0 or a number of from 1 to 10, and m is a number of from

[ We claim:] [1.] A process for the production of end-capped nonionic surfactants corresponding to formula (I): [ STR 3 ] in which R.sup.1 is an alkyl or alkenyl group containing 6 to 22 carbon atoms, n1 and n2 independently of one another are 0 or a number of from 1 to 10, and m is a number of from 1 to 20, comprising the steps ofA) reacting at least one fatty alcohol polyglycol ether corresponding to formula (II): [ STR 4 ] in which R.sup.1, n1, n2 and m are as defined above, with a solid base (III), having a water content of less than 15% by weight, in the presence of an alkali metal borohydride, an alkaline earth metal borohydride, or both;B) etherifying the resulting alcoholate or alcoholates with dimethyl sulfate,C) adding water to the etherified alcoholate or alcoholates in an amount sufficient to result in phase separation into an organic phase and an aqueous phase; andD) separating the organic phase from the aqueous phase.