Huels Aktiengesellschaft

Udo Kowalczik

Martin Bartmann

Wolfgang Neugebauer

Joachim Mugge

Friedrich Georg Schmidt

Juergen Finke

Heinz G Poll

A thermoplastic moulding material is prepared by the admixture of

Thermoplastic moulding materials based on polyphenylene ethers and

Molding compounds that contain polyphenylene ethers which have been prepared from comonomers consisting of phenols substituted with benzyl groups exhibit improved mechanical properties, for example impact strength. Such molding compounds are useful for the production of industrial items such as pipes, panels or cases.

Thermoplastic molding compound based on modified co-polyphenylene ether

Block copolymers based on polyphenylene ethers and polycondensates obtained by a process that comprises of the following steps:

Block copolymers based on polyphenylene ethers and polycondensates, and

A polyphenylene ether having at least one functional end group of the formula: ##STR1## in which R is a divalent C.sub.1-12 aliphatic group, n is 0 or 1, and R.sub.5 is hydrogen, a C.sub.1-8 alkyl group or a hydroxy-C.sub.2-8 -alkyl.

Polyphenylene ether end capped with oxazoline moiety

Thermoplastic molding compounds are prepared from a functionalized polyphenylene ether and a polyamide. The polyphenylene ether is functionalized by the incorporation of a small quantity of a functionalized phenol monomer.

Thermoplastic molding compounds based on functionalized polyphenylene

Reducing 3,3', 5,5'-tetra-t-butyldiphenoquinone with 2,6-di-t-butylphenol, in the melt, in the presence of a 4-dialkylaminopyridine, and then dealkylating the intermediate formed, in the melt, by adding a phosphorus-containing acid or its derivative provides 4,4'-dihydroxybiphenyl of high purity in high yield.

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Bochum, Germany

Udo Kowalczik