Bayer Aktiengesellschaft

Gert Humme

Karl-Heinz Ott

Frank Wingler

Dietrich Hardt

Lothar Liebig

Alfred Pischtschan

Hans-Eberhard Braese

Leo Morbitzer

Harry Rohr

Rudolf Binsack

Volker Serini

Dieter Neuray

Peter Tacke

Friedrich Fahnler

Manfred Beck

Richard Prinz

Dieter Rempel

Friedrich Kowitz

Jochen Schnetger

Dietmar Kranz

Karl Dinges

Peter Hagenberg

Horst Plato

Process for the removal of residual monomers from ABS polymers prepared by emulsion polymerization, wherein from 0.1 to 10% by weight, based on the solids content in the latex, of an electrolyte such as an acid or a salt are added to a latex containing an ABS polymer, and the mixture is at the same time heated to a temperature of from 55.degree. to 120.degree. C. while the residual monomer and part of the water are removed by distillation.

Process for the removal of residual monomers from ABS polymers

The toughness of polybutylene terephthalate can be considerably improved by the addition of an ABS-graft copolymer having a relatively high content of graft base and a closely defined particle size; the typical properties of polybutylene terephthalate, such as its high dimensional heat stability, hardness and rigidity, are not substantially reduced. The products show an excellent multiaxial impact strength.

High-impact polybutylene terephthalate

High-impact thermoplastic vinyl chloride polymer moulding composition

Thermoplastic moulding compositions

Thermoplastic moulding compositions with improved notched impact strength consisting of a polyamide and a graft product of polybutadiene or copolymers of butadiene as graft substrate and of a mixture of an ester of (meth)acrylic acid, (meth)acrylonitrile and/or (meth)acrylamide as graft monomers.

Impact-resistant polyamide moulding compositions

Thermoplastic rubber blends of polycarbonates and block copolymers

A thermoplastic moulding composition comprising:

A thermoplastic moulding composition comprising a polymer mixture of (A) 25 to 95% by weight of a graft polymer of 70 to 30% by weight of a mixture of styrene (95 to 50% by weight) and acrylonitrile (5 to 50% by weight) on 30 to 70% by weight of polybutadiene or a butadiene-styrene copolymer, and (B) 5 to 75% by weight of a terpolymer containing 10 to 30 parts by weight of acrylonitrile, 7.5 to 15 parts by weight of maleic acid anhydride, and 82.5 to 55 parts by weight of styrene in copolymerized form.

Thermoplastic molding compositions

A thermoplastic molding composition having improved flow, toughness. and heat distortion comprising a polymer mixture of (A) 25 to 95% by weight of a graft polymer of 70 to 30% by weight of a mixture of styrene (95 to 50% by weight) and acrylonitrile (5 to 50% by weight) on 30 to 70% by weight of an EPDM-rubber, and (B) 50 to 75% by weight of a terpolymer of acrylonitrile, maleic acid anhydride and styrene, the terpolymer containing 10 to 30 parts by weight of acrylonitrile, 7.5 to 15 parts by weight of maleic acid anhydride, and 82.5 to 55 parts by weight of styrene in copolymerised form.

High impact ternary blend PVC moulding compositions

ABS moulding compositions

Moulding compositions based on ABS-graft polymers, containing:

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Odenthal, Germany

Gert Humme