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

US4666745A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Karl Huhn · Burghausen, DE
• Rudolf Kaufmann · Burghausen, DE

Key dates

• Filing date: Jul 14, 1986
• Grant date: May 19, 1987
• Expiry date: Jul 14, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31663
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Novel organopolysiloxanes are described in which the organopolysiloxanes are terminated by units of the formula R.sub.3 SiO.sub.1/2 and comprise units of the formulas RR.sup.1 SiO, RR.sup.2 SiO, RR.sup.3 SiO, RHSiO and R.sub.2 SiO, where R represents the same or different alkyl radicals having from 1 to 4 carbon atoms per radical, or phenyl radicals, R.sup.1 represents the same or different alkyl radicals having at least 6 carbon atoms per radical, R.sup.2 represents the same or different aralkyl radicals and R.sup.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.sub.3 SiO.sub.1/2 and RHSiO and optionally units of the formula R.sub.2 SiO, wherein R is the same as above, with an organic compound that has a terminal C.dbd.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.dbd.C bond. These orga…