Patent · US Expired

Organopolysiloxane-polyether-vinyl graft copolymers

US4368290A · kind A · utility

10Cited by

3References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Heinrich Alberts
Hans Friemann · Cologne, DE
Hans-Heinrich Moretto · Cologne, DE
Hans Sattlegger · Odenthal, DE

Key dates

Filing date	Nov 14, 1980
Grant date	Jan 11, 1983
Priority date	—
Expiry date	Nov 14, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F283/06
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A graft copolymer comprising (I) as a first polymeric moiety an organopolysiloxane with OH functional groups, (II) as a second polymeric moiety a polyether, and (III) units of vinyl monomer which have been polymerized in the presence of mixtures of the first and second polymeric moieties which moieties are linked via vinyl polymer bridges, is produced by polymerizing a suitable monomer dispersion. The product is suited for replacing all or some of the organopolysiloxane component in room temperature curable compositions containing organopolysiloxanes, silane cross-linking agents and a curing catalyst.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.