Bayer Aktiengesellschaft

Rudolf Binsack

Ulrich R Grigo

Christian Lindner

Peter Bier

Josef Merten

Dieter Rempel

Ludwig Bottenbruch

Leo Morbitzer

Werner Nielinger

Hugo Vernaleken

Dieter Neuray

Eckart Reese

Joachim Wank

Friedrich Fahnler

Karl-Heinz Kohler

Ludwig Trabert

Klaus-Peter Arlt

Karl-Heinz Ott

Walter Heitz

Heinz-Josef Fullmann

Bert Brassat

John R Sanderson

Dieter Wittmann

Werner Nouvertne

Erhard Tresper

Dietrich Michael

Heinrich Haupt

Jurgen Hinz

Hermann Brinkmeyer

Klaus Elfert

Gunter Lehr

Hans-Josef Buysch

Hans Rudolph

Claus H Wulff

Volker Serini

Hans J Rosenkranz

Uwe Westeppe

Artur Reischl

Wolfgang Alewelt

Norbert Schon

Frank Wingler

Peter R Muller

Clemens Casper

Gert Humme

Harald Selbeck

Herbert Pelousek

Wolfgang Richter

Helmut Korber

Hans-Georg Gehrke

Birger Knickel

Henning Klussmann

Johannes O Sajben

Hans Hespe

Alfred Horbach

Gunter B Weber

Manfred Grundmeier

Heinrich Bonten

Sivara Krishnai

The invention relates to thermoplastic polyamide moulding compositions with improved toughness at low temperatures consisting of at least 60% by weight of polyamide and from 3 to 35% by weight of graft rubbers from the group comprising diene rubbers and acrylate rubbers, which are produced in that a mixture of the two components is produced in the presence of from 0.01 to 5% by weight of a radical forming agent and the moulding compositions are then heated below the polyamide melting point as far as possible in the absence of oxygen.

Process for the production of moulding compositions from thermoplastic

Readily processable moulding materials with improved impact strength of polyamides and graft products which have a particular chemical and physical structure.

High impact strength, readily flowing polyamide moulding materials

Process for the preparation of copolyamides from adipic acid, terephthalic acid and hexamethylene diamine containing 25-48% by weight of units of hexamethylene terephthalamide, by precondensing the monomers at a temperature of at least 250.degree. C. and a pressure of at least 35 bar and completing the polycondensation in the usual manner.

Process for the preparation of copolyamide from adipic acid,

Polyalkylene terephthalates which contain small quantities of aliphatic polycarbonate show improved fracture behavior, without a significant adverse effect on the strength and the flowability in the melt. Moreover, the compositions show improved behavior in hot-air ageing.

Impact-resistant thermoplastic polyester compositions of low melt

Process for the preparation of polyamides from 1,4-diaminobutane and adipic acid, wherein a 40 to 70% strength aqueous solution of the monomers is heated at 280.degree.-320.degree. C., preferably 290.degree.-310.degree. C., for a period of 5 to 30 minutes under a pressure of less than 8 bar, to give a precondensate having a relative viscosity of 1.05 to 2.0, and solid phase after-condensation at 180.degree.-260.degree. C.

Multistage process for the preparation of poly(tetramethylene-adipamide)

Block copolyesters based on polyalkylene terephthalates which contain polydiene blocks show an extremely low deformation even when they are processed into thin articles. They still have a crystallinity which is decreased by less than the ratio corresponding to the polydiene portion.

Thermoplastic block copolyesters, a process for the preparation thereof

A process for the production of copolyamides from aromatic dicarboxylic acids, adipic acid, and hexamethylene diamine having from 30 to 51.5% by weight of units of the hexamethylene adipic acid amide, the monomers being precondensed at at least 250.degree. C. and under a pressure of at least 35 bars and the polycondensation being conducted in a conventional manner to completion.

Process for the production of copolyamide from aromatic dicarboxylic

Pulverulent red phosphorus stabilized with zinc fluoride and the use thereof as flame-retarding agent to thermoplastic moulding compositions.

Stabilized red phosphorus and the use thereof for flameproof,

Thermoplastic moulding materials, with improved toughness at low temperatures, of polyamide and cross-linked graft rubbers from the diene rubber and acrylate rubber series, obtained by heating blends of the two components below the melting point of the polyamide.

Molding compounds of thermoplastic polyamide and graft rubber

This invention relates to thermoplastic molding compositions having improved impact strength at low temperatures comprising polyamides and grafted, at least partially crosslinked diene rubbers and/or acrylate rubbers having a bimodal rubber particle size distribution.

High impact thermoplastic polyamide molding compositions

Block copolyamides consisting of from 1 to 80% by weight of hydrogenated telechelic diene polymers having M.sub.n molecular weight of from 400 to 6000 and from 99 to 20% by weight of polyamides or polyamide-forming components.

Elastomeric block copolyamides

The present invention relates to thermoplastic moulding compositions, which have improved impact strength at low temperature, comprising thermoplastic polyesters, in particular polyalkylene terephthalates, and grafted, partially or highly cross-linked diene rubbers and/or acrylate rubbers having a bimodal rubber particle size distribution.

Thermoplastic polyester moulding compositions which have good impact

Moulding compositions of polycarbonate, polyalkylene terephthalate and, optionally, polymer having a glass transition temperature below -20.degree. C. may be processed to form particularly low-distortion mouldings when the polycarbonate consists at least partly of o,o,o',o'-tetramethyl-besphenol-polycarbonate.

Thermoplastic moulding compositions based on polycarbonate, polyalkylene

Moulding compositions of aromatic polycarbonate, polyalkylene terephthalate and a certain graft copolymer which may be processed into mouldings characterized by high multiaxial impact strength, exhibit an increased Vicat B-temperature if they contain a low amount of an ethylene homo- or copolymer.

Thermoplastic moulding compositions of polycarbonate, polyalkylene

Block copolymers

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Krefeld, Germany

Rudolf Binsack