Patent · US Expired

Organopolysiloxane-urethane-vinyl graft copolymers

US4336358A · kind A · utility

9Cited by

4References

8Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Nov 14, 1980
Grant date	Jun 22, 1982
Priority date	—
Expiry date	Nov 14, 2000

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F283/00
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 polyester-urethane and, (III) units of vinyl monomers, units of the first and second polymeric moieties being linked via vinyl polymer bridges, all these units having been polymerized in the presence of mixtures of the first and second polymeric moieties, 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.