Process for preparing silicon-tin compounds

US4152343A · kind A · utility

Assignee

• Wacker Chemie AG · DE

Inventors

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

Key dates

• Filing date: Feb 9, 1978
• Grant date: May 1, 1979
• Expiry date: Feb 9, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08K5/57
• 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 their use as condensation catalysts in the preparation of organopolysiloxane elastomers.