Bayer Aktiengesellschaft

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Bayer Akteingesellschaft

Uwe Westeppe

Dieter Freitag

Karsten-Josef Idel

Ulrich R Grigo

Christian Lindner

Gunther Weymans

Carl Casser

Dieter Wittmann

Karl-Erwin Piejko

Volker Serini

Thomas Eckel

Werner Nouvertne

Claus H Wulff

Manfred Hajek

Gerd Fengler

Karl-Herbert Fritsch

Rolf Dhein

Karl-Heinz Ott

Helmut Waldmann

Josef Merten

Werner Waldenrath

Holger Lutjens

Klaus-Christian Paetz

Lutz Schrader

Peter Horlacher

Karsten J Idel

Leo Morbitzer

Helmut-Martin Meier

Volker Eckhardt

Peter Tacke

Klaus D Berg

Hans-Joachim Laue

Hans-Josef Buysch

Rudolf Binsack

Knud Reuter

Edgar Leitz

Hans-Detlef Heinz

Jurgen Kirsch

Werner Nielinger

Harald Schmidt

Gerhard Fennhoff

Ernst Grigat

Alfred Eitel

Ralf Pakull

Winfried Pommeranz

Wolfgang Beer

Ludwig Trabert

Martin Wandel

Volker Damrath

Harald Selbeck

Wolfgang Schulz-Schlitte

Paul J Mayska

Bernd Griehsel

Kurt Weirauch

Alfred Jung

Axel Sandquist

Klaus Struss

Dieter Constant

Franz-Josef Gielen

J&uuml;rgen L&ouml;rcks

Rolf-Peter Muller

The present invention relates to a compostable adhesive, to a method of producing the same, and to the use of the adhesive for the adhesive bonding of materials.

Compostable adhesive

A thermoplastic molding composition containing an aromatic polycarbonate and a particular siloxane compound is disclosed. The composition which is based on a polycarbonate resin having bifunctional structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl, or C.sub.7 -C.sub.12 -aralkyl,

Stabilization of polycarbonates having high heat distortion temperatures

This invention relates to thermoplastic moulding compounds with improved properties, in particular with reduced water absorption and rigidity and improved impact strength, from polyamides A and a thermoplastic resin copolymer B containing at least one (meth)acrylic acid ester of a tertiary alcohol in quantities of up to 35% by weight in addition to the other monomers such as styrene or (meth)acrylic esters. The invention also relates to rigid moulding compounds which are tough at low temperatures and are obtained from polyamides and the thermoplastic resin copolymers defined above and in addition contain a rubber polymer C in quantities of up to 35% by weight.

Thermoplastic moulding compounds of polyamides and resin copolymers

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

Dihydroxydiphenyl bicycloalkanes characterized in that they contain 9 to 13 ring C atoms in the bicycloaliphatic component are disclosed. The disclosed compounds were found to be suitable for the preparation of high molecular weight, thermoplastic polycarbonate resins having favorable properties.

Special dihydroxydiphenyl bicycloalkanes, their production and their use

Interpolymers of aromatic polyesters and cross-linked (or partially cross-linked) rubbers and a process for their production in which a mixture of a cross-linked rubber in latex form containing reactive groups and an aqueous solution of an alkali metal or alkaline earth metal diphenolate is reacted with a solution of a dicarboxylic acid halide and/or a carbonyl halide in a water-immiscible solvent so that an aromatic polyester forms at the water/organic solvent phase boundary, which polyester goes over into the organic phase and the rubber at the same time also goes into the organic phase. The interpolymer of rubber and organic polyester thus formed is suitable for the production of moulded articles of all kinds by the methods of thermoplastic shaping such as extrusion and injection moulding.

Interpolymers of aromatic polyesters and rubbers

Dihydroxydiphenyl cycloalkanes corresponding to the formula ##STR1## in which R.sup.1 and R.sup.2 independently of one another represent hydrogen, halogen, C.sub.1 -C.sub.8 alkyl, C.sub.5 -C.sub.6 cycloalkyl, C.sub.6 -C.sub.10 aryl and C.sub.7 -C.sub.12 aralkyl,

Polycarbonate from dihydroxydiphenyl cycloalkane

Polycarbonate from special dihydroxydiphenyl bicycloalkane

This invention relates to a process for the preparation of substituted cycloalkylidene bisphenols from phenols and special cycloalkanones in the presence of acid condensation catalysts and in the presence of water.

Process for the preparation of substituted cycloalkylidene bisphenols

Highly heat distortion resistant moulding compositions are disclosed comprising an aromatic polycarbonate having molecular weights Mw (weight average) of a least 10,000, containing bifunctional carbonate structural units corresponding to formula (Ia) ##STR1## wherein R.sup.1 and R.sup.2 denote, independently of one another, hydrogen, halogen, C.sub.1 -C.sub.8 -alkyl, C.sub.5 -C.sub.6 -cycloalkyl, C.sub.6 -C.sub.10 -aryl or C.sub.7 -C.sub.12 -aralkyl,

Stabilization of highly heat distortion resistant polycarbonates

The process for the production of an alloy of cross-linked or partially cross-linked rubbers and aromatic polyesters basically consists of reacting a mixture of a rubber latex and an aqueous solution of an alkali metal or alkaline earth metal diphenolate with a solution of a dicarboxylic acid halide and/or a carbonyl halide in a water-immiscible solvent. An aromatic polyester forms at the water/organic solvent phase boundary and goes over into the organic phase. At the same time, the rubber migrates from the aqueous into the organic phase. When the organic phase is separated and the organic solvent removed, the alloy of rubber and oirganic polyester remaining behind is suitable for the production of moulded articles of all kinds.

Process for the production of alloys of rubbers and aromatic polyesters

A carbonate corresponding to formula (I) ##STR1## in which R is aromatically bound polystyrene moiety and --O--D--O-- is a diphenolate moiety in which --D-- is a divalent group containing 6 to 30 carbon atoms and r is 0 or 1 is disclosed. The carbonate is useful as a flow aid for thermoplastic molding compositions.

Carbonates, their production and their use as flow aids

A thermoplastic molding composition comprising (i) an aromatic polycarbonate having high thermal dimensional stability and based on a substituted dihydroxydiphenylcycloalkane, (ii) other aromatic polycarbonate resin and (iii) graft, particle-type diene rubbers is disclosed. The composition is characterized by its good Izod impact strength. A process for preparing the molding composition and their use for manufacturing molded bodies are also disclosed.

Polycarbonate molding composition

A molding composition comprising a mixture of an aromatic polycarbonate based on a substituted dihydroxy diphenylcyclohexane, a copolymer of a resin forming vinyl monomer and a graft polymer of a resin forming monomer onto a diene rubber, and a process for its manufacture and use for making heat resistant shaped articles are disclosed.

Polycarbonate/ABS compositions of high heat resistance

The invention relates to ternary thermoplastic mixtures of polycarbonates, polyurethanes and graft polymers and, optionally, standard additives and to processes for the production of these mixtures.

Ternary thermoplastic mixtures

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Mettmann, Germany

Uwe Westeppe