Bayer Aktiengesellschaft

Alfred Jung

Ulrich R Grigo

Karl-Heinz Ott

Karl-Erwin Piejko

Edgar Leitz

Hans-Josef Buysch

Dieter Freitag

Christian Lindner

Ludwig Bottenbruch

Karsten-Josef Idel

Werner Nouvertne

Ralf Dujardin

Uwe Westeppe

Leo Morbitzer

Gunther Weymans

Norbert Schon

Peter Horlacher

Gerd F Renner

Werner Nouverte

Bruno Boemer

The present invention relates to mixtures containing 1) polycarbonates and 2) specific polymers of C.sub.10 -C.sub.40 -alkyl (meth)acrylates and if appropriate styrenes or C.sub.1 -C.sub.4 -alkyl methacrylates, and if appropriate customary additives, the preparation of these mixtures and their use for the production of petrol-resistant shaped articles.

Polycarbonate moulding compositions, their preparation and their use

The invention relates to polyacrylates corresponding to formula (I) ##STR1## to their production in a quasi-ionic polymerization and to their use as monofunctional chain terminators, optionally in combination with typical other chain terminators, for the production of aromatic polycarbonates. The invention also relates to the polycarbonates or polycarbonate mixtures obtained using the compounds corresponding to formula (I) and to their use as additives for other thermoplastic polycarbonates.

Monofuctional polyacrylates, their production and their use for the

Thermoplastic polydiorganosiloxane/polycarbonate block copolymers based on dihydroxydiphenylcycloalkanes corresponding to the following general formula (I): ##STR1## wherein R.sup.1 and R.sup.2 independently represent hydrogen, halogen, preferably chlorine or bromine, C.sub.1 -C.sub.8 alkyl, C.sub.5 or C.sub.6 cycloalkyl, C.sub.5 -C.sub.10 aryl or C.sub.7 -C.sub.12 aralkyl, preferably phenyl-C.sub.1 -C.sub.4 -alkyl, in particular benzyl: m represents an integer of from 4 to 7, preferably 4 or 5;

Polydiorganosiloxane/polycarbonate block cocondensates based on certain

Copolymers of blocks of polymers of cyclic aliphatic carbonates, cyclic aliphatic esters or cyclic aliphatic carbonates and cyclic aliphatic esters on the one hand and blocks of polymers of cyclic aromatic carbonates on the other hand and a process for their production by multistage polymerization, in which a block polymer is initially prepared from the aliphatic monomer and the aromatic polymer is produced in the presence of this block.

Block copolymers based on cyclic aliphatic carbonates and/or esters on

This invention relates to a process for the production of aromatic polycarbonates from cyclic aromatic carbonate oligomers in the presence of aprotic organic solvents at low temperatures.

Polymerization of cyclic aromatic oligomers with low temperature aprotic

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Krefeld, Germany

Alfred Jung