Organopolysiloxanes modified with poly-carbodiimide

US4214066A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans-Heinrich Moretto · Cologne, DE
• Helmut Steinberger · Leverkusen, DE
• Ingrid Larking · Landvetter, SE
• Hans Sattlegger · Odenthal, DE

Key dates

• Filing date: Jun 22, 1978
• Grant date: Jul 22, 1980
• Expiry date: Jun 22, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G77/455
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Polycarbodiimide is present as a solid phase in a liquid polyorganosiloxane, preferably being formed therein by mixing a polyisocyanate with the polysiloxane followed by a carbodiimidization catalyst. If the polyorganosiloxane contains hydroxyl groups it can be chemically bonded to the polycarbodiimide. The composition can be cured to solid plastic masses of superior properties by adding a curing agent for the polysiloxane.