Bayer Aktiengesellschaft

Karola Brudermanns

Christian Lindner

Walter Uerdingen

Helmut Waniczek

Carlhans Suling

Herbert Bartl

Rolf Kubens

Helmut Hurnik

Dietrich Hardt

Jurgen Hinz

Lothar Meier

Jurgen Heuser

Otto Billinger

Fogging of plastics containing polymer plasticizers is reduced by treating the polymer plasticizers with water vapor in the melt.

Process for reducing fogging due to plasticizers in plastics

Moulding compounds consisting of a mixture of (A) from 99.99 to 60 parts, by weight, of a polyoxymethylene; (B) from 0 to 40 parts, by weight, of an elastomer having a softening temperature below the crystallite melting point of polyoxymethylene (A) and a freezing point below 0.degree. C.; and (C) from 0.01 to 40 parts, by weight, of an aliphatic, rubber-like, high molecular weight adipate-carbonate mixed ester.

Thermoplastic moulding compounds based on polyoxymethylene and polymeric

Non-aromatic polyester carbonates which have a high molecular weight are obtained if polycondensation is stopped in a reversible manner by the addition of phenol, the phenol is subsequently removed and polycondensation is continued.

Process for the production of high molecular weight polyester carbonates

Alkyl sulphonic acid phenyl esters which are substituted by carboxylic acid esters can be obtained by reacting sulphochlorinated paraffins with hydroxy benzoic acid esters. Said compounds can be used as plasticizers for polymers.

Alkyl sulphonic acid phenyl esters substituted by carboxylic acid esters

A thermoplastic molding composition contains a mixture of 10 to 95% by weight of a vinyl chloride polymer and 90 to 5% by weight of an adipate/carbonate mixed ester which is the transesterification reaction product of an adipate-diol polyester having terminal hydroxyls and a bifunctional carbonic acid aryl ester. The composition has a favorable combination of physical properties which include good cold fracture behavior coupled with easy processability and good ageing characteristics.

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Leverkusen, Germany

Karola Brudermanns