Organopolysiloxanes having Si-bonded hydrogen and SiC-bonded epoxy groups and a process for preparing the same

Abstract

Abstract Novel organopolysiloxanes are described in which the organopolysiloxanes are terminated by units of the formula R 3 SiO 1/2 and comprise units of the formulas RR 1 SiO, RR 2 SiO, RR 3 SiO, RHSiO and R 2 SiO, where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, or phenyl radicals, R 1 represents the same or different alkyl radicals having at least 6 carbon atoms per radical, R 2 represents the same or different aralkyl radicals and R 3 represents the same or different, SiC-bonded, monovalent organic radicals having at least one vicinal epoxy group per radical. These organopolysiloxanes are preferably prepared by reacting organopolysiloxanes which contain units of the formulas R 3 SiO 1/2 and RHSiO and optionally units of the formula R 2 SiO, wherein R is the same as above, with an organic compound that has a terminal C═C-bond and at least one vicinal epoxy group per molecule, at least one alkene having at least 6 carbon atoms per molecule, and at least one aralkene in the presence of a catalyst which promotes the addition of Si-bonded hydrogen to the aliphatic C═C bond. These organopolysiloxanes may be applied simultaneously with a polymer having perfluoroalkyl groups with at least 3 carbon atoms per alkyl group to fibers to render them oil and water repellent.

Inventors

• 👤 Karl Huhn
• 👤 Rudolf Kaufmann

Bibliographic Details