Basf Aktiengesellschaft

Styrolution Gmbh

Basf Se Corporation

Ineos Styrolution Europe Gmbh

Achim Datko

Klaus Hahn

Markus Allmendinger

Ludger Leber

Martin Weber

Norbert Niessner

Franz-Josef Dietzen

Bernhard Schmied

Gerd Ehrmann

Piyada Charoensirisomboon

Harald Larbig

Jan Holoch

Martin Laun

Michel Pepers

Joachim Ruch

Matthias Müller

Karl-Heinz Batscheider

Peter Dodel

Leonie Felicitas Braun

Luc Gysels

Christian Lemaire

Knut Zöllner

Uwe-Johannes Lehnen

Leonie Felicitas Sperling

Norbert Effen

The present invention relates to a process for the production of thermoplastic molding compositions, in particular styrene copolymer compositions, to a process for production of these, and also to use thereof. The thermoplastic molding compositions produced by a process of the invention offer improved temperature-resistance and mechanical properties, which have better flow properties than known molding compositions.

Method for producing thermoplastic molding compounds with a high glass fiber content

The present invention relates to thermoplastic molding compositions having a mixture of (a) from 10 to 50% by weight of a methyl methacrylate polymer as component (A), from 20 to 60% by weight of a copolymer as component (B), and from 20 to 70% by weight of a graft copolymer as component (C). Component (C) is obtainable from components (c1) a core, (c2) a first graft shell, and (c3) a second graft shell. The second graft shell (c3) is obtainable via polymerization of a C-C-alkyl ester of methacrylic acid as component (c31) and a further vinylaromatic monomer as component (c32). Graft copolymer (C) is produced via emulsion polymerization and is isolated from the reaction mixture by precipitation resulting from shear. Also disclosed are processes for producing the molding compositions, the use of the molding compositions, and moldings obtainable from the molding compositions.

Thermoplastic molding compositions with improved optical properties

Expanded styrene polymers which have a density of less than 25 g/l and a thermal conductivity &#x3bb;, determined at 10&#xb0; C. in accordance with DIN 52612, of less than 32 mW/m*K, and also a process for producing them.

Expanded styrene polymers having a reduced thermal conductivity

The present invention relates to thermoplastic molding compositions comprising a mixture composed of (A) at least one methyl methacrylate polymer, (B) at least one copolymer, obtainable via polymerization of a mixture, composed of (B1) at least one vinylaromatic monomer, and (B2) at least one vinyl cyanide, as monomers, (C) at least one graft polymer, obtainable from a core, and a first graft shell, and a second graft shell, (D) at least one polybutyl acrylate whose molar mass is from 1700 to 4000 g/mol (determined as Mby means of gel permeation chromatography), and (E) if appropriate conventional additives, as component (E), to a process for preparation of these thermoplastic molding compositions, to the use of this thermoplastic molding composition for production of moldings, and also to the use of styrene-methyl methacrylate copolymers whose molar mass is from 1700 to 4000 g/mol (determined as Mby means of gel permeation chromatography) for improvement of flowability and for reduction of the dependency of notched impact strength and haze values of thermoplastic molding compositions on injection-molding conditions.

Thermoplastic molding compound with processing-independent viscosity

A process for the preparation of expandable styrene polymers having a molecular weight Mof greater than 170,000 g/mol, which comprises conveying a blowing agent-containing styrene polymer melt having a temperature of at least 120&#xb0; C. through a die plate with holes whose diameter at the die exit is at most 1.5 mm, and subsequently granulating the extrudate, and expandable styrene polymers (EPS) having a molecular weight Mof more than 170,000 g/mol with 0.05 to 1.5% by weight of internal water.

Method for producing expandable polystyrene

A process for the preparation of styrene polymers containing water as the sole expanding agent by polymerization of styrene in aqueous suspension in the presence of an amphiphilic organic emulsifier which carries both hydrophilic and hydrophobic groups, or a polar group-containing, water-miscible polymer.

Production of water-expandable styrene polymers

Growing community of inventors

Leimen, Germany

Achim Datko