Bayer Aktiengesellschaft

Kurt P Meurer

Josef Witte

Gerd Sylvester

Helmut Waniczek

Joachim Franke

Peter Haas

Christian Ohm

Christian Lindner

Rolf-Volker Meyer

Karl-Erwin Piejko

Harald Pielartzik

Herbert Bartl

Hans-Eberhard Braese

Lothar Meier

Maria Gartner

Hugo Zimmermann

Joseph W Witte, Deceased

By Klaus Witte, Heir

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.

Thermoplastically processible poly-vinylarene/polyurethane block

The present invention is directed to poly-.alpha.-olefin/polyurethane block copolymers which are prepared by reacting

Poly-.alpha.-olefin/polyurethane block copolymers, processes for their

The thermoplastic block copolymers according to the invention of optionally substituted vinyl or vinylidene polymer segments and segments of liquid crystalline polymers are suitable for use as compatibility improvers or dispersing agents in otherwise incompatible or poorly compatible thermoplastic polymer mixtures and may be used for the production of moulded articles, filaments, fibres and films.

Thermoplastic block copolymers of vinyl or vinylidene polymer segments

Ethylene/vinyl acetate copolymers containing very high molecular weight components and having a reduced tendency to tackiness may be obtained by a further addition of ethylene during the process of solution polymerization at a moderate pressure.

Process for the preparation of ethylene/vinyl acetate copolymers with

Polymer mixtures of a special graft polymer based on acrylate rubber, a special rubbery acrylate copolymer, resin-type vinyl polymers and polyesters containing carbonate groups and their use in manufacturing flexible (leather-type) sheets.

Polymer mixture for flexible sheets

This invention relates to thermoplastic moulding compositions of PVC and poly-.alpha.-olefine/polyurethane block copolymers and poly-(C.sub.2 -C.sub.10 -.alpha.-olefines) which have been functionalized in relation to isocyanate groups, preferably polypropylene, di- or higher poly-isocyanates or isocyanate prepolymers and optionally relatively high molecular weight polyols and/or low molecular weight chain lengthening agents.

Thermoplastic moulding compositions based on polyvinyl chloride and a

The present invention relates to poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carboxylic acids of Mw (weight average) 2000 to 350,000, to their preparation by oxidative degradation of polyolefines or by reaction of 'Living' polyolefines with CO.sub.2, to their conversion into poly-(C.sub.2 -C.sub.10 -.alpha.-olefine)-carbonyl halides and to their use for preparing polyolefine/polycarbonate block copolymers and the block copolymers obtainable by the process according to the invention.

Polyolefinecarboxylic acids, their preparation and their use for

This invention relates to copolymers of .alpha.-cyanoacrylates and acrylates, their preparation and their use.

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Koenigswinter, Germany

Kurt P Meurer