Basf Aktiengesellschaft

Adolf Echte

Juergen Hambrecht

Johann Swoboda

Franz Brandstetter

Hermann Gausepohl

Rudi W Reffert

Herbert Naarmann

Klaus Bronstert

Volker Muench

Karl H Illers

Peter Siebel

Peter Klaerner

Hans Mittnacht

Klaus Hahn

Isidoor De Grave

Karl Gerberding

Rudolf H Jung

Rainer Bueschl

Hans-Dieter Schwaben

Rupert Schick

Edmund Priebe

Eduard Heil

Johann Zizlsperger

Josef Schwaab

Hermann Dreher

Paul Wittmer

Konrad Mitulla

Franz Haaf

Hans Hoenl

Helmut Jenne

Juergen Mertes

Hans Wild

Heinz-Juergen Overhoff

Albert Nikles

Walter Himmele

Graham E McKee

Walter Heckmann

Christof Taubitz

Manfred Walter

Gerhard Fahrbach

Walter Ziegler

Dieter Stein

Ehrenfried Baumgartner

Hermann Fischer

Rudolf Stephan

Uwe Blumenstein

Hans H Schuster

Klaus Hinselmann

Hermann Brandt

Gunter Thielen

Claus Bernhard

Rainer Schlichtmann

Hubert Kindler

Wolfgang F Muller

Manfred Lieb

Ernst Tetzlaff

Guenter Jeckel

Hansjoerg Adler

Konrad Schulte

Hermann P Hofmann

Herbert Frank

Karl-Heinz Illers

Gerd Schwoebel

Rosemarie Berger

A molding material is described which contains, in each based on the sum of A, B and C,

Heat distortion resistant, thermoplastic molding material containing a

Impact modified thermoplastic blends of components A, B and optionally C, consisting of:

Thermoplastics of polyalkylene terephthalates impact modified with

Molding materials comprising a matrix of high impact polystyrene and rubber incorporated in the form of discrete particles contain not less than 50% by weight of polystyrene A and an effective amount of up to 50% by weight of a graft rubber B. The graft rubber B consists of from 40 to 95% by weight of an elastomeric core b.sub.1 and from 5 to 60% by weight of a shell b.sub.2, i.e. from 5 to 50% by weight of a first shell B.sub.21 of styrene and from 50 to 95% by weight of a second shell b.sub.22 of from 60 to 90% by weight of styrene and from 10 to 40% by weight of acrylonitrile, A and B, b.sub.1 and b.sub.2, b.sub.21 and b.sub.22 and styrene and acrylonitrile each summing to 100% by weight.

Thermoplastic molding material

Thermoplastics impact modified with functionalized polymers and use

An impact resistance thermoplastic molding composition contains, each percentage being based on A+B, from 80 to 55% by weight of a hard matrix A of a copolymer containing at least 95% by weight of an aromatic vinyl monomer a.sub.11 of from 8 to 10 carbon atoms and at least one comonomer a.sub.12 in a proportion of 0.1 to 5% by weight, based on A, and from 45 to 20% by weight of a soft phase B which, uniformly dispersed in the hard matrix, has an average particle diameter d.sub.50 (volume average) of from 3.5 to 9 .mu.m and is obtainable by polymerization of the mixture of monomers a.sub.11 and a.sub.12 in the presence of an elastomer (rubber) and subsequent isolation of the useful product, wherein the comonomer a.sub.12 has the general formula I ##STR1## where X is --OR.sup.2, --COOR.sup.2 or --CONHR.sup.3,

Impact resistant thermoplastic molding composition and use thereof

Process for preparing impact-resistant translucent rubber-modified polystyrene by polymerizing compounds of the styrene class in the presence of a rubber containing thiol groups.

Preparation of impact-resistant poly(alkyl)styrene

A heat distortion resistant, transparent thermoplastic molding material contains a copolymer of the monomers

Heat distortion resistant, transparent thermoplastic molding material,

Impact-resistant translucent rubber-modified polystyrene is produced by polymerizing compounds from the class of the styrenes in the presence of an elastomeric polymer which contains thiol groups.

Impact resistant thermoplastic molding materials containing a styrene polymer modified with rubber to be impact resistant, a hydrogenated styrene containing block copolymer and a polyphenylene ether as well as optional additives in which 50 to 98 percent by weight of the particles of the flexible component of the impact resistant styrene polymer have an average particle diameter of equal to or less than 1.0 micron and 2 to 50 percent by weight of the particles of the flexible have an average particle diameter of equal to or greater than 2 microns.

Impact resistant thermoplastic molding materials

A thermoplastic molding material contains, in each case based on the molding material comprising A+B,

Thermoplastic molding materials and their preparation

Thermoplastic molding materials contain a blend of a polyphenylene ether with a copolymer which consists of monovinyl-aromatic monomers, alkyl methacrylates where alkyl is of not more than 8 carbon atoms and, if required, an elastomer component having a glass transition temperature of .ltoreq.0.degree. C.

Thermoplastic molding materials

Polyphenylene ethers are prepared from monohydric phenols, which possess alkyl substituents in the two ortho-positions and, if desired, in the meta-position, but not in the para-position, by an oxidative coupling reaction with oxygen at from 15.degree. to 50.degree. C. and under from 1 to 10 bar in the presence of a catalyst complex, of a solvent and, if required, of an activator, by a method in which the conversion of the phenols is carried out in two more reaction zones, in which some or all of the solvent, the catalyst complex and the phenols and, where relevant, the activator is initially taken and is circulated by means of a conveying unit, and about 60-100% of the stoichiometric amount of oxygen required for the oxidative coupling is introduced into the first reaction zone and from 0 to about 40% of the said stoichiometric amount is introduced into the second reaction zone.

Preparation of polyphenylene ethers, and an apparatus for this purpose

The catalyst is removed in the preparation of high molecular weight polyphenylene ethers from monohydric phenols, which are alkyl-substituted at the two ortho-positions but not at the para-position and may or may not be alkyl-substituted at the meta-position, by an oxidative coupling reaction with oxygen at from 15.degree. to 50.degree. C. in the presence of a catalyst complex obtained from a copper salt and an organic amine, in the presence of from 1 to 20 parts by weight of a solvent per part by weight of the monomeric phenol, and in the presence or absence of an activator, and removal of the metal component of the catalyst from the polyphenylene ether solution with a complex-forming or chelate-forming compound in aqueous solution, in the presence or absence of reducing and stabilizing substances and assistants for accelerating the interphase reactions and for phase separation, by a method in which the continuous removal of the copper catalyst is carried out in one or more mixer-settler stages at a phase volume ratio of the organic phase to the aqueous phase of from 1:0.1 to 1:1.0, preferably from 1:0.4 to 1:0.6.

Continuous removal of the catalyst from polyphenylene ethers

A halogen-free flameproofed thermoplastic molding material consists of a halogen-free thermoplastic resin (A) and one or more further halogen-free components. The thermoplastic resin (A) is present in an amount of from 30 to 90% by weight, based on the molding material. The latter contains, as further components, from 1 to 50% by weight of a phenol/aldehyde resin (B), from 1 to 50% by weight of a nitrogen-containing organic compound (C) and from 3 to 50% by weight of a phosphorus-containing organic compound (D), the percentages in each case being based on the molding material. The molding material is used for the production of flameproofed moldings.

Halogen-free flameproofed thermoplastic molding material

A flameproofed thermoplastic molding material consists of

Flameproofed thermoplastic molding material comprising a novolak resin

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Adolf Echte