Process for the preparation of organopolysiloxane moulding compositions which give fine-pored elastomeric foam mouldings

US4229548A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hans Sattlegger · Odenthal, DE
• Hermann Schmidt · Linz, DE
• Karl Schnurrbusch · Leverkusen, DE

Key dates

• Filing date: Jul 16, 1979
• Grant date: Oct 21, 1980
• Expiry date: Jul 16, 1999

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S528/901
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

In a process for the production of a plastic organopolysiloxane molding composition which can be stored under pressure and with exclusion of moisture, and which, on release of the pressure and under the action of water or atmospheric moisture, is converted into an elastomeric, fine-pored foam molding or foam coating, which comprises forming a mixture of an .alpha.,.omega.-dihydroxypolydiorganopolysiloxane with a silicon-containing crosslinking agent, introducing the mixture into the inner container of a two-container pack which consists of a rigid outer container and a flexible inner container located within the outer container and provided with a dispensing valve which extends to the exterior, and placing the mixture under pressure.