Silicon-tin compounds as condensation catalysts in the preparation of organopolysiloxane elastomers

US4102860A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

• Ernst Wohlfarth
• Wolfgang Hechtl · Burghausen, DE
• Paul Hittmair · Burghausen, DE

Key dates

• Filing date: Dec 30, 1976
• Grant date: Jul 25, 1978
• Expiry date: Dec 30, 1996

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F7/2224
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Silicon-tin compounds of the formula EQU R.sub.a Si(OSnR.sup.1 R.sup.2 OOCR.sup.3).sub.4-a in which R represents an alkyl or phenyl radical, R.sup.1, R.sup.2 and R.sup.3 are alkyl radicals and a is 0 or 1 and there use as condensation catalysts in the preparation of organopolysiloxane elastomers.