Huels Aktiengesellschaft

Huls Aktiengesellschaft

Chemische Werke Huls Aktiengesellschaft

Evonik Degussa Gmbh

Daicel Chemical Industries, Ltd.

Chemische Werke Huels Aktiengesellschaft

Huels Aktiengaellscaft

Martin Bartmann

Wilfried Ribbing

Juergen Finke

Klaus Burzin

Jurgen Finke

Wolfgang Neugebauer

Roland Feinauer

Udo Kowalczik

Gunter Poll

Hanns-Jorg Bax

Hans Jadamus

Franz-Michael Bollenrath

Friedrich-Georg Schmidt

Heinz-Guenter Poll

Hans-Joachim Panoch

Markus Wenzel

Burkhard Standke

Roland Edelmann

Christian Wassmer

Joachim Mugge

Srinivasan Sridhar

Christian Gerth

Rene Koschabek

Michael Droscher

Michael Droescher

Bernhard Hentschel

Thorsten Brand

Joachim Muegge

Armin Gude

Michael Schlobohm

Wolfgang Seeliger

Naoki Ikeda

Holger Koziel

Andreas Schubert

Klaus Bevers

Bernard Hentschel

Wilfred Ribbing

Heinz G Poll

Uwe Hartkopf

René Koschabek

The present invention relates to a preparation comprising at least one specific oligomeric siloxane component and at least one polymer component, to processes for producing it and to its use in formulations, more particularly metal coating formulations.

Inorganically modified polyester binder preparation, process for production and use thereof

The invention relates to molding compositions which are stable with respect to alcohol and boiling water. The known molding compositions which are stable to boiling water and comprise amorphous copolyamides have unsatisfactory stability to alcohols. There is therefore a demand to improve molding compositions comprising polyamide in this respect. The invention provides molding compositions based on an amorphous copolyamide prepared from:

Molding compositions which are stable to alcohols and boiling water

The invention provides aromatic polyamides having an improved resistance to thermo-oxidation. This is achieved by carrying out the polycondensation in the presence of a catalyst system which comprises a mixture of a phosphorus compound and a tin(II) compound or is a compound which contains both elements. The process according to the invention allows aromatic polyamides to be obtained which are resistant to thermo-oxidation (discoloration).

Catalytic process for the preparation of an aromatic polyamide

The invention relates to molding compositions which are stable with respect to alcohol and boiling water. The known molding compositions which are stable to boiling water and comprise amorphous copolyamides have unsatisfactory stability to alcohols. There is therefore a demand to improve molding compositions comprising polyamides in this respect.

Molding polyamide composition which are stable to alcohols and boiling

Preparation of an aromatic polyamide with catalyst comprising

Molding compounds that contain polyphenylene ethers which have been prepared from comonomers consisting of phenols substituted with benzyl groups exhibit improved mechanical properties, for example impact strength. Such molding compounds are useful for the production of industrial items such as pipes, panels or cases.

Thermoplastic molding compound based on modified co-polyphenylene ether

Block copolymers based on polyphenylene ethers and polycondensates obtained by a process that comprises of the following steps:

Block copolymers based on polyphenylene ethers and polycondensates, and

High purity 4,4'-bis(4-aminophenoxy)diphenyl sulfone is prepared from p-aminophenol, alkali metal hydroxide and 4,4'-dihalodiphenyl sulfone by using a molar ratio of alkali metal hydroxide: 4-aminophenol in the range of 1.0-1.1:1.0 and a molar ratio of 4-aminophenol: 4,4'-dihalodiphenyl sulfone in the range of 2.005-2.05:1.0 and by using a dialkylamide or N-alkyl lactam as a solvent. Pristine products (no-recrystallization) of 99.0% purity having melting points above 195.degree. C. are obtained.

Process for the preparation of 4,4'-bis(4-aminophenoxy)-diphenyl sulfone

The invention provides aromatic polyamides having a reduced melt viscosity which are derived from aromatic dicarboxylic acids, aromatic diamines and aromatic monocarboxylic acids being present in the polyamide in an amount of from 0.01 to 10 mol %. The invention allows molding compositions to be provided which have improved processability and good mechanical properties.

Molding composition composed of a thermoplastically processable aromatic

A process for the preparation of PPE and/or PPE-containing moulding materials. Styrene or a styrene derivative is added to the organic PPE solution in order to improve the color quality.

Process for improving the quality of PPE-containing moulding materials

A polyphenylene ether having at least one functional end group of the formula: ##STR1## in which R is a divalent C.sub.1-12 aliphatic group, n is 0 or 1, and R.sub.5 is hydrogen, a C.sub.1-8 alkyl group or a hydroxy-C.sub.2-8 -alkyl.

Polyphenylene ether end capped with oxazoline moiety

Thermoplastic molding compounds are prepared from a functionalized polyphenylene ether and a polyamide. The polyphenylene ether is functionalized by the incorporation of a small quantity of a functionalized phenol monomer.

Thermoplastic molding compounds based on functionalized polyphenylene

An aromatic polyamide, e.g., from isophthalic acid and 4,4'-bis(4-aminophenoxy)diphenylsulfone, is produced with a sufficient amount, e.g., 0.05-4 mol%, of 4-phenoxypyridine to improve resistance to thermal oxidation.

Production of a thermoplastically processable, aromatic polyamide using

Aromatic polyamides having an improved resistance against thermal oxidation, are produced by utilizing monomers having a very high degree of purity, at least 99.90% by weight, preferably, at least 99.94%.

Catalytic production of aromatic polyamides from high purity monomers

Molding compounds comprising aromatic polyamides which contain from 0.001 to 10% by weight of a low molecular weight sulfonic acid amide display low melt viscosities and an increased resistance to hydrolysis and are thermoplastically processible.

Molding compounds comprising a thermoplastically processible aromatic

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Recklinghausen, Germany

Martin Bartmann