Patent · US Expired

Thermoplastically processible poly-vinylarene/polyurethane block copolymers

US5395888A · kind A · utility

4Cited by

8References

5Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Joachim Franke · Koblenzer Straße, DE
Kurt P. Meurer · Leverkusen, DE
Peter Haas · Brisbane, AU
Josef Witte · Cologne, DE

Key dates

Filing date	Feb 25, 1994
Grant date	Mar 7, 1995
Priority date	—
Expiry date	Feb 25, 2014

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08G18/2805
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A substantially linear poly-vinylarene/polyurethane block copolymer prepared by reacting (1) a difunctional poly-vinylarene which is produced by anionic polymerization and which contains isocyanate-reactive groups, (2) a diisocyanate or an isocyanate prepolymer, and (3) a diol having a high molecular weight or a chain extender having a lower molecular weight, is disclosed to be suitable for the preparation of shaped articles, coatings, coupling agents and compatibilizers.

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