Bayer Aktiengesellschaft

Winfried Paul

Hans-Jurgen Kress

Werner Nouvertne

Christian Lindner

Horst Peters

Ulrich R Grigo

Dieter Neuray

Josef Buekers

Dieter Freitag

Mark W Witman

Peter R Muller

Wolfgang Stix

Hartmut Lower

Hans-Josef Buysch

Karl-Heinz Ott

Manfred Schmidt

Thomas Scholl

Volker Serini

Jochen Schoeps

Helmut Steinberger

Wolfgang Nising

Wolfgang Grape

Dietrich Rathmann

Siegfried Storp

A thermoplastic molding composition is disclosed comprising a polydiorganosiloxane-polycarbonate block cocondensate and 0.5% to 15% by weight of a particular hydroxy benzotriazole. The composition is characterized by its improved protection against UV light.

Polydiorganosiloxane-polycarbonate block co-codensates with improved

Polyester-carbonate/polysiloxane block copolymers containing the following recurring structural units: ##STR1## wherein the structural units (1) comprise at least 75 wt.% of the sum of the structural units (1) and (2), exhibit better low temperature tough fracture properties than the known polyester-carbonate/polysiloxane block copolymers containing comparable recurring structural units on comparison of polyester-carbonate/polysiloxane block copolymers of the same heat resistance.

Thermoplastic polyester-carbonate/polysiloxane block copolymers

The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxanepolycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.

Thermoplastic polycarbonate moulding compositions

The present invention relates to thermoplastic moulding materials from polydiorganosiloxane-polycarbonate block copolymers and copolymers from styrenes and maleic anhydride and, if appropriate, further conventional additives, and also a process for the preparation of these moulding materials.

Thermoplastic polycarbonate moulding materials

The present invention relates to thermoplastic moulding compositions containing polydiorganosiloxane/polycarbonate block copolymers, elastomeric polymers and, if appropriate, polyalkylene terephthalates.

Thermoplastic moulding compositions based on polysiloxane/polycarbonate

The present invention relates to thermoplastic moulding compositions comprising polydiorganosiloxane-polycarbonate block copolymers, copolymers of styrene and maleic anhydrides, graft polymers and, where appropriate, further customary additives and a process for preparing these moulding compositions.

The present invention relates to thermoplastic moulding compositions containing (A) 20 to 80 parts by weight of a polydiorganosiloxane/polycarbonate block copolymer, (B) 70 to 5 parts by weight of a graft polymer in particle form and (C) 5 to 60 parts by weight of a rubber-free, thermoplastic vinyl polymer, the total of parts by weight of components (A)+(B)+(C) being in each case 100 parts by weight, and, if appropriate, other known additives.

Thermoplastics moulding compositions based on polysiloxane/polycarbonate

The present invention relates to the preparation of thermoplastic poly-(diorganosiloxane)/polycarbonate block copolymers containing monoalkylphenyl or dialkylphenyl end groups by the phase boundary process, and to the block copolymers which can be obtained by the process.

Polydiorganosiloxane/polycarbonate block copolymers

Siloxane/polyester (carbonate) block copolymers comprising wholly aromatic polyester or polyestercarbonate units and from 0.5 to 7.5% by weight of polysiloxane blocks, exhibit an improved melt flowability without impairment of the heat stability.

Thermoplastic polysiloxane-polyester (carbonate) block copolymers, their

The present invention relates to thin-walled UV-stabilized polycarbonate mouldings, especially webbed laminate panels and films, made of polydiorganosiloxane/polycarbonate block copolymers.

UV-stabilized polycarbonate mouldings

The subject of the present invention is a process for the preparation of polydiorganosiloxanes containing hydroxyaryloxy terminal groups by reacting polydiorganosiloxanes containing bis-acyloxy terminal groups with diphenols in a molar ratio of 1:2 to 1:20.

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Krefeld, Germany

Winfried Paul