Process for the preparation of an organopolysiloxane functionalized with a benzalmalonate by hydrosilylation in the presence of a hydroxy carboxylic acid or a cyclic ester thereof

US8110647B2 · kind B2 · utility

Assignee

• DSM IP ASSETS B.V. · NL

Inventors

• Friedhelm Nickel · Essen, DE
• Peter Will · Gomaringen, DE

Key dates

• Filing date: Dec 1, 2009
• Grant date: Feb 7, 2012
• Expiry date: Aug 5, 2030

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/38
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The present invention relates to a process for the preparation of an organopolysiloxane functionalized with a benzalmalonate by hydrosilylation, said process involving the use of a hydroxy carboxylic acid or a cyclic ester thereof.