Bayer Aktiengesellschaft

Miles Inc.

Arlanxeo Deutschland Gmbh

Jurgen Kirsch

Karsten-Josef Idel

Dieter Freitag

Christian Lindner

Gerhard Fennhoff

Gunther Weymans

Burkhard Kohler

Karl-Erwin Piejko

Gerd Fengler

Ralf Pakull

Rolf Dhein

Wolfgang Ebert

Ulrich R Grigo

Klaus Horn

Richard Weider

Wolfgang Herrig

Hans-Georg Gehrke

Hanns-Ingolf Paul

Rolf Treckmann

Dieter Wittmann

Wilfried Haese

Hans-Eberhard Braese

Charles E Lundy

Holger Lutjens

Siegfried Anders

Wolfgang Beer

Heinz-Josef Fullmann

Uwe Arndt

Hans-Josef Buysch

Rolf Wehrmann

Ludwig Bottenbruch

Thomas Scholl

Hans-Dieter Block

Klaus Reinking

Hans-Jurgen Kress

Claus H Wulff

Horst Peters

Uwe Hucks

Uwe Westeppe

Jurgen Hocker

Werner Nielinger

Ludwig Rottmaier

Klaus Kircher

Steffen Kuhling

Klaus D Berg

Alfred Eitel

Bernhard Hess

Werner Struver

Karola Schneiders

Lothar Meier

Jurgen Heuser

Peter Horlacher

Werner Verhoeven

Wolfgang Schulz-Schlitte

Reinhard Schomacker

Hartmut Lower

Klaus Zander

Hugo Obermann

Friedemann Paul

Rudiger Plaetschke

Horst Beicher

Thomas Joswig

Klaus Elgeti

Wolfgang-Hans Schulz-Schlitte

Bernhard Wehrle

Peter Baasch

Volker Wege

Karsten Knebel

The present invention relates to a catalyst system containing a metathesis catalyst containing at least one N-heterocyclic carbene ligand and at least one phenolic compound and to a process for performing the metathesis on nitrile rubbers for reducing their molecular weight using a metathesis catalyst containing at least one N-heterocyclic carbene ligand (NHC ligand) and at least one phenolic compound.

Catalyst system containing a metathesis catalyst and at least one phenolic compound and a process for metathesis of nitrile-butadiene rubber (NBR) using the catalyst system

The invention relates to a process for the production of multilayer plastic sheets from special branched polycarbonates.

Process for the production of multilayer plastic sheets

The invention relates to a process for the synthesis of bis-(4-hydroxyphenyl)-alkanes on ion-exchange resins or mixtures of ion-exchange resins which are modified with alkyl-SH groups, wherein the monophenols and carbonyl compounds to be used have first been purified to remove substances which can transfer alkyl groups.

Bisphenol synthesis on modified ion-exchange resins using specially

The invention relates to flameproofed polycarbonate/ABS blends which are resistant to stress cracking, wherein the polycarbonates are wholly or partly modified by halobutyl rubber blocks.

Flameproofed polycarbonate/ABS blends resistant to stress cracking

The present invention provides polycarbonates with aliphatic ketocarboxyl end groups, optionally mixed with known aromatic polycarbonates, and a process for their preparation, the chain terminators used being those of formula (I): ##STR1## The present invention also provides mixtures of the polycarbonates or polycarbonate mixtures with reactionless polyisobutylenes.

Polycarbonates with aliphatic ketocarboxyl end groups, mixed with known

A method of preparing aliphatic-aromatic polycarbonate resin is disclosed. Accordingly, the method entails reacting an oligocarbonate of diphenol having chlorocarbonic acid ester terminal groups, with an aliphatic diol, in a non-aqueous solvent. The amount of solvent is such that the oligocarbonate is about 10-40% relative to the total weight of solvent, oligocarbonate and diol.

Method of preparing aliphatic-aromatic polycarbonates

A process for producing an aliphatic-aromatic polycarbonate is disclosed. The process comprise (A) reacting in an anhydrous neutral solvent (i) an oligocarbonate of diphenol with (ii) an aliphatic dicarboxylic acid, and (B) eliminating the hydrogen chloride and carbon dioxide by-products. The oligocarbonate of diphenol is characterized in that it is terminated by chlorocarbonic acid ester groups. The resins thus prepared are readily molded conventionally.

Process for the production of aliphatic-aromatic polycarbonates

The present invention relates to thermoplastic foams in which .beta.-ketocarboxylic acids, .beta.-ketocarboxylic acid esters or tert.-butyl esters of organic acids are used as the foaming agents.

Recyclable thermoplastic foam with a high glass transition temperature II

The invention relates to silicon compounds, to mixtures thereof in aromatic polycarbonates and aromatic polyester carbonates and to their use as heat stabilizers in aromatic polycarbonates and aromatic polyester carbonates.

Heat stabilization or aromatic polycarbonates

A catalytic method for preparing thermoplastic carbonate polymers is disclosed. In the method according to the interfacial polycondensation process or the homogeneous solution process, resins which containing catalytically active groups are used as catalysts. The resulting resins are characterized by their color stability and temperature stability.

Method of preparing polycarbonates and polyester carbonates

New, highly branched polyphosphonates which have a greatly improved flame retardant action compared with known polyphosphonates which are suitable as additives for plastics. In addition the new polyphosphonates may be incorporated in plastics as stabilizers with excellent migration properties.

Highly branched polyphosphonates based on melamine

The invention relates to use of salts of sulphonic acids, phosphonic acids and/or carboxylic acids in combination with halogenated phthalimides for additional processing of glass fibre-containing polycarbonate moulded members.

Use of salts in combination with halogenated phthalimides for flameproof

The mixtures according to the present invention of polyalkylene terephthalates, certain new polycarbonates and/or polyester-carbonates and elastomers have a particularly favourable low temperature strength/heat distortion point relationship compared with conventional moulding compositions containing known polycarbonates. The mixtures are used for the production of, in particular, shaped articles.

Mixtures of polyalkylene terephthalates, new polycarbonates and/or

A thermoplastic molding composition suitable for the preparation of foam is disclosed. The composition comprises a thermoplastic resinous component and a foaming agent which includes A) (i) 0.01 to 4.8% alumina hydrate (aluminum hydroxide) in combination with (ii) 0.01 to 4.8% of an acidic additive or B) 0.01 to 4.8% of the reaction product of said (i) and said (ii), the percentages being relative to the weight of the composition to be foamed. The invention is based on the finding that the foaming of the composition does not lead to any significant reduction in molecular weight of the resinous component or to troublesome discoloration of the foam, even during its re-extrusion.

Recyclable thermoplastics foam of high glass temperature

Thermoplastic molding compounds of polyalkylene terephthalate, special barium sulfate, particulate graft polymers and, optionally, reinforcing materials are distinguished from known, elastomer-modified polyalkylene terephthalates, particularly polyethylene terephthalates, by improved heat resistance and toughness.

Thermoplastic molding compounds of polyalkylene terephthalate, special

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Leverkusen, Germany

Jurgen Kirsch