Polysiloxanes with at least one sulfatohexyl group linked by an Si-C bond

摘要

Polysiloxanes of the general formula <IMAGE> which contain at least one sulfatohexyl group linked by an Si-C bond are prepared wherein R1 is a methyl or phenyl group with the proviso that at least 90% of the R1 groups are methyl groups, R2 either is identical with R1 or is -(CH2)6-OSO3-.M+, M+ being an alkali, 1/2 alkaline earth or optionally an alkyl-substituted ammonium ion, R3 is identical with R1 or R2, with the proviso that at least one R2 or R3 group in the average molecule is a -(CH2)6-OSO3-.M+ group, "a"=0 to 5 and b=0 to 5. A method for the synthesis of these compounds and their use as hydrolysis-resistant surfactants is also described.