Basf Aktiengesellschaft

Rohm Gmbh Chemische Fabrik

Basf Aktiengsellschaft

Gerhard Heinz

Juergen Koch

Peter Ittemann

Hartmut Zeiner

Georg N Simon

Wolfgang Eberle

Hermann Buchert

Dietmar Nissen

Jochem Henkelmann

Peter Neumann

Gunter Pipper

Graham E McKee

Bernd Hisgen

Manfred Eggersdorfer

Michael Kopietz

Juergen Fischer

Robert R Lieder

Erhard Seiler

Dietrich Lausberg

Bernhard Rosenau

Eckhard M Koch

Peter Richter

Manfred Knoll

Helmut Muenstedt

Joachim Seibring

Heiner Goerrissen

Wilhelm Schuette

Albrecht Hilt

Wolfgang Stegmaier

Klaus Matthias

Helmut Reichelt

Hermann Gausepohl

Michael Portugall

Juergen Hambrecht

Alexander Aumueller

Gerd Blinne

Walter Goetz

Johann Swoboda

Helmut Tesch

Heinz Weber

Herbert Stutz

Lothar Schlemmer

Gerd Ehrmann

Gerhard Bleckmann

Walter Ziegler

Hans Lorenz

Karl Gerberding

Dieter Stein

Hermann Fischer

Rudolf H Jung

Wolfgang F Mueller

Wolfgang Jarre

Georg Falkenstein

Franz Haaf

Peter Wolf

Rudolf Stephan

Mong-Jon Jun

Burghard Schmitt

Hans-Georg Braun

Hermann Dikow

Carola Hedtmann-Rein

Hans Mittnacht

Gerhard Schaefer

Ernst Schoen

Klaus Hofmann

Bernd Hupfeld

Hanshelmut Kaeppel

Gisbert Schleier

Gerhard Dembek

Ingo H Dorn

Juergen Sadlowski

Peter R Szigeti

Jurgen Pohrt

Friedrich Kleber

Hans-Henning Hub

Matthias Winkler

Paul Witimer

Jurgen Fischer

Hendrikus Bobbink

Uwe Jacobsen

Otto Diroll

Gunther Schreyer

Christiane Husemann

Stabilized polyaryl ether ketone molding compositions containing as essential components

Stabilized polyaryl ether ketone molding compositions

A process for preparing polyaryl ethers of the formula I or Ia ##STR1## by condensation of at least one appropriate bisphenol with at least one appropriate aromatic dichloride in the presence of an alkali metal carbonate in a dipolar aprotic solvent, is carried out in the presence of a catalyst selected from the alkali metal nitrites and the group of compounds of the formula II ##STR2## where r.sup.1 and r.sup.3 are each hydrogen, C.sub.7 -C.sub.16 -phenylalkyl, C.sub.1 -C.sub.12 -alkoxy, fluorine, chlorine, bromine, iodine or nitro, and R.sup.2 is nitro or nitroso, or ##STR3## where R.sup.4 is hydrogen, C.sub.1 -C.sub.4 alkyl, fluorine, chlorine, bromine or iodine.

Preparation of polyaryl ethers with nitrogen compound catalysts

Thermoplastically re-formable plastic sheets with flameproofing means, characterized by a core layer 1-10 mm thick comprised of polyether sulfone or a similar thermoplastic, which core material has a content of at least 0.5 wt. %, preferably at least 2 wt. %, of a flame-protective additive, such as boron trioxide; and said sheet or plate further characterized by outer layers, firmly adhering to and covering the two faces of the core layer, at least 0.05 mm thick and comprised of a thermoplastic having a lower proportional content of the flame-protective additives than the core layer; are particularly useful for interior structures in passenger conveyances, such as airplanes.

Plastic sheet or plate with flameproofing means

Soluble and/or meltable benzothiazole-containing polyaryl ethers with a glass transition temperature of above 150.degree. C. and a melting point of up to 450.degree. C. are composed essentially of repeat units of the formula I ##STR1## whose rings may be substituted by C.sub.1 -C.sub.6 -alkyl, C.sub.1 -C.sub.6 -alkoxy, aryl or halogen and where R is ##STR2##

High temperature resistant, benzothiazole-containing polyaryl ethers

Premix for the production of mouldings, containing

Polymer granules having improved processability

A process for the surface treatment of moldings based on liquid crystalline polymers with acidic or alkaline reagents includes using the reagents in a solvent which is an organic solvent to an extent of not less than 60% by weight.

Surface treatment of moldings based on liquid crystalline polymers

Polyaryl ether ketones which contain units of the formula ##STR1## are prepared by electrophilic polycondensation in an inert solvent in the presence of a Lewis acid and in the presence or absence of a Lewis base using a carbonyl halide as monomer component, said carbonyl halide being an oxalyl dihalide or a mixture thereof with another carbonyl halide.

Preparation of polyaryl ether ketones by electrophilic polycondensation

High molecular weight polyaryletherketones are prepared by nucleophilic polycondensation of a bisphenol with a mixture of a difluoroaromatic and a dichloroaromatic by a process in which, in a first stage, the total amount of bisphenol and dichloroaromatic is added and, in a second stage, the difluoroaromatic is added. The resulting polyaryletherketones have a reduced viscosity of not less than 0.65 and contain from 0.003 to 0.03% by weight of organically bonded chlorine and from 0.003 to 0.03% by weight of organically bonded fluorine.

Two stage process of preparing polyaryletherketones

Thermoplastic molding compositions suitable for producing interior components for vehicles for the conveyance of passengers, in particular aircraft, which show a low smoke gas density and low heat release characteristics in the event of a fire, are based on a heat-resistant plastic which contains as a filler from 0.5 to 50 % by weight of an oxide of an element of main group III, IV or V, of a salt of an oxygen acid of an element of main group III, IV or V or of a compound which on heating forms such an oxide or salt.

Heat-resistant thermoplastic molding compositions

The addition of compounds which convert carboxylic acids into their halides in the course of electrophilic polycondensation for preparing polyaryl ether ketones improves the controllability and reproducibility of the process and the properties of the products.

Polyaryleneetherketones are prepared by a quasicontinuous process, by Friedel-Crafts polycondensation of a reaction mixture containing

Preparation of polyaryleneetherketones

Thermoplastic molding materials contain, as essential components,

Thermoplastic molding materials based on polyamide blends

Aromatic polycondensates are prepared in a continuous process from

Continuous preparation of aromatic polycondensates

High temperature resistant polysulfone-polyimide block copolycondensates suitable for example for producing shaped articles are composed of at least one polyarylene ether sulfone block comprising units of the structure ##STR1## and at least one polyimide block comprising units of the structure ##STR2## where R.sup.1 and R.sup.2 are identical or different and each is hydrogen or methyl and X is methylene or 1,2-ethylene, and are prepared by condensing conventionally obtained amine-terminated polyarylene ether sulfone blocks with polyimide blocks in the melt.

High temperature resistant polysulfone-polyimide block copolycondensates

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Gerhard Heinz