Bayer Aktiengesellschaft

Helmut Korber

Dieter Neuray

Peter Tacke

Friedrich Fahnler

Frieder Heydenreich

Ludwig Bottenbruch

Rudolf Binsack

Leo Morbitzer

Josef Merten

Dieter Rempel

Bernd Peltzer

Hansjochen Schulz-Walz

Hannes Von Harpe

A mixture comprising 1. from 70 to 99% by weight of a predominantly aromatic polycarbonate; and 2. from 30 to 1% by weight of a polyolefin graft polymer of (a) 70 to 95% by weight of a graft base consisting of a homopolymer of aliphatic and/or aromatic monoolefins or of a copolymer of these olefins, and up to 50% by weight of other monoolefinically unsaturated, radially polymerizable compounds and/or up to 5% by weight of diolefins, and (b) 5 to 30% by weight of at least one graft-polymerizable vinyl compound, the olefin graft polymers having been obtained by contacting a melt of the graft base (a) with oxygen or an oxygen-containing gas for at most 10 min. with intensive mixing under a pressure of from 1 to 150 bars and at a temperature of from 80.degree. C. to 300.degree. C., adding the vinyl compounds (b) to be grafted on immediately afterwards with intensive mixing in the absence of oxygen or oxygen-containing gas and removing the residual monomers after the graft polymerization reaction.

Polycarbonate-polyolefin moulding compositions

Polymer blends consisting of from 60-99 % by weight of polyamide and of from 1-40 % by weight of a graft product of polyethylene or copolymers of ethylene with grafted units of (meth)acrylic acid and/or (meth)acrylic acid derivatives and/or maleic acid which graft products have been prepared by a special grafting process.

Polyamide moulding compounds having high impact strength

High impact resistant polymer blends comprising 70-99% by weight of a polyamide and 1-30% by weight of a polyethylene having been oxidized by a special process.

Polyamides containing oxidized polyethylene

The toughness of thermoplastic polyesters can essentially be improved by addition of a new type of graft polymers which contain one grafting site for about 400 to 2000 carbon atoms, the average molecular weight M.sub.w of the graft branches being from 2000 to 40,000.

Thermoplastic polyester moulding compositions with good toughness

Molding compositions comprising a 'terminally unsaturated'polyurethane, a copolymerizable vinyl or vinylidene compound and a rubbery-elastic polymer having a glass transition temperature of between -90.degree. and +10.degree. C. can be used for the preparation of molded articles having a considerably increased impact strength and a good heat distortion temperature, strength and rigidity.

Copolymerizable molding compositions based on unsaturated polyurethanes

A continuous process for the production of graft polymers of oxidizable polymers as backbone and radically polymerizable monomers for forming the side chains, characterized in that an intensively stirred melt of the backbone polymer is brought into contact for at most 10 minutes with oxygen or oxygen-containing gases under a pressure of from 1 to 150 bars and at a temperature of from 100.degree. to 300.degree. C., immediately after which one or more radically polymerizable monomers is/are added with intensive stirring in the absence of oxygen and oxygen-containing gas, and after their polymerization the graft polymer formed is isolated.

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Odenthal, Germany

Helmut Korber