Organopolysiloxanes, modified with acrylate groups in the presence of a rhodium catalyst

US5552506A · kind A · utility

Assignee

• Th. Goldschmidt. AG · DE

Inventors

• Thomas Ebbrecht · Bochum, DE
• Peter Lersch · Oberhausen, DE
• Dietmar Wewers · Bottrop, DE

Key dates

• Filing date: Sep 10, 1994
• Grant date: Sep 3, 1996
• Expiry date: Sep 10, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09D183/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Organopolysiloxanes, which terminally, laterally or both have at least one group of the formula ##STR1## well as at least one acrylate group, linked over a bridge element to this group, is obtained by hydrosilylation of organopolysiloxanes with at least one SiH group by compounds, which have at least two acrylate groups, in equimolar amounts at a temperature of 60.degree. to 130.degree. C. in presence of rhodium catalysts. The rhodium catalysts cause a 1,2 addition to take place during the addition reaction between polyacrylates and hydrogen siloxanes.