Process for the preparation of crosslinked organopoly-siloxanes and their use as active ingredient of abhesive coating materials for two-dimensional carriers

US4311821A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Christian Weitemeyer · Essen, DE
• Gotz Koerner · Essen, DE

Key dates

• Filing date: Apr 22, 1980
• Grant date: Jan 19, 1982
• Expiry date: Apr 22, 2000

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/31667
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for producing crosslinked organopolysiloxanes by reacting organosilicon compounds, which have olefinic unsaturated groups, with organosilicon compounds which have SiH groups, in the presence of catalysts is disclosed. The compounds are useful as active ingredients of abhesive coating materials for two-dimensional carriers, especially paper and plastic film. Those organosilicon compounds with olefinic unsaturated groups contain, in the average molecule, at least one group of the formula ##STR1## in which R is a methyl, ethyl, or --CH.sub.2 OCH.sub.2 --CH.dbd.CH.sub.2 group. From the reaction of these compounds with organosilicon compounds which have SiH groups, siloxanes are obtained which have outstanding abhesive properties.