Process for preparing carboxyl-functional silanes and siloxanes

US5637746A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Arno Knebelkamp · Essen, DE
• Peter Lersch · Oberhausen, DE
• Christian Weitemeyer · Essen, DE

Key dates

• Filing date: Apr 25, 1996
• Grant date: Jun 10, 1997
• Expiry date: Apr 25, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/38
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to a process for preparing silanes or siloxanes having carboxyl functionalities, wherein a hydrogen silane or hydrogen siloxane compound is reacted with a tertiary butyl ester having an olefinic double bond and the sil(ox) ane-bonded tertiary butyl ester group is subsequently converted into the corresponding carboxyl group with elimination of isobutene.