Bayer Aktiengesellschaft

Other

Agfa-gevaert Ag

Bayer Corporation

Lanxess Deutschland Gmbh

Bayer Aktiengellschaft

Richard Weider

Thomas Scholl

Burkhard Kohler

Klaus Horn

Wolfgang Ebert

Gisbert Michels

Jurgen Kirsch

Rolf Dhein

Dieter Wittmann

Rolf Wehrmann

Rudiger Schubart

Klaus Kircher

Andreas Ruckes

Uwe Scholz

Ralph Ostarek

Dieter Freitag

Dieter Arlt

Thomas Eckel

Karsten-Josef Idel

Werner Nouvertne

Ralf Dujardin

Harald Pielartzik

Thomas König

Bernd Klinksiek

Michael Negele

Bernhard Jansen

Gerhard Fennhoff

Ulrich Liesenfelder

Ralf Hufen

Frank Wingler

Michael Bierdel

Detlev Joachimi

Klemens Kohlgrüber

Charles E Lundy

Klaus D Berg

Rick L Archey

Jochen Endtner

Werner Tischer

Aaron D Meltzer

Peter Horlacher

Martin Brock

Christian Leuschke

Hugo Obermann

Helmut Meyer

Raymond D Burk

Tobias Benighaus

Horst Beicher

Hermann Uytterhoeven

Joong-In Kim

Jörg Krüger

Otto Schmid

Oliver Wolff

Jochen Dr Endtner

The present invention relates to thermoplastic moulding compositions comprising unbranched, thermoplastic polyamide, a phosphinic or diphosphinic salt, a nitrogen-containing flame retardant combination and also at least one oxygen-containing, nitrogen-containing or sulphur-containing metal compound and also to the production and the use of the inventive moulding compositions for production of fibres, of foils and of mouldings of any type.

Halogen free flame-retardant thermoplastic moulding compositions based on polyamide with increased glow-wire resistance

A process for concentrating polymers by evaporation is disclosed. The process entails (i) obtaining a mixture containing a polymer and volatile component, the volatile components being present in the mixture at an amount less than 20 wt. % relative to the weight of the mixture, and (ii) introducing the mixture in a downward direction under pressure through a plurality of nozzles arranged vertically and next to one another into a degassing container to form an extrudate. The volatile component contains at least one of residual monomers, oligomers and solvents, and the throughput of the mixture per nozzle is 0.3 to 2 kg/h. The vapor pressure of the volatile component of the extrudate is more than 2.5 bar, and the absolute pressure in the degassing container is 50 to 5000 Pa. The polymer prepared by the process is characterized in that it contains volatile components in an amount of less than 300 ppm.

Process for separating volatile components from polymers

Process for producing ABS moulding compositions having a high rubber content

A thermoplastic molding composition containing 1 to 99 parts by weight of aromatic polycarbonate or polyester carbonate and 1 to 99 parts by weight of at least one graft polymer prepared by solution polymerization is disclosed. The graft polymer is characterized in having rubber content of 20 to 50 wt. % and in that the average particle size of its rubber phase is 80 to 600 nm. The composition, which optionally contains additives, flameproofing agents and reinforcing agents, is characterized by its improved mechanical properties.

Polycarbonate-ABS moulding materials

A continuous process for the manufacture of impact resistant polymers is disclosed. The process comprise polymerization of a reaction mixture containing vinylaromatic monomers in the presence of soluble rubber and entails shearing at least some of said mixture at a rate of more than 30000 1/s using a device having no rotating parts. The resulting product is characterized in its low gloss and improved impact properties.

Process for the manufacture of impact resistant modified polymers

The invention relates to a process for preparing polymers having repeating succinyl units, especially polysuccinimide and polyaspartic acid, with increased M.sub.W values at non-increased, moderate synthesis temperatures and at the same time without increased polycondensation times, using maleic anhydride and ammonium carbonate plus a catalyst.

Process for the preparation of polymers with repeating succinyl units

The invention relates to flameproofed polycarbonate/ABS blends which are resistant to stress cracking, wherein the polycarbonates are wholly or partly modified by halobutyl rubber blocks.

Flameproofed polycarbonate/ABS blends resistant to stress cracking

The invention relates to thermoplastic molding compounds containing polyisobutylene-modified polycarbonate, graft polymer and optionally copolymer, aromatic polycarbonate, polyolefins.

High-impact molding compounds based on polyisobutylene-containing

The present invention provides a process for the production of polycarbonate-polyisobutylene block cocondensates from thermoplastic aromatic polycarbonates and reactive polyisobutylenes in the melt, as well as mixtures of the block cocondensates with non-reactive polyisobutylenes.

Process for the production of polycarbonate-polyisobutylene block

This invention relates to block copolycarbonates made from polycarbonate blocks and polyisobutylene-.alpha.-haloketocarboxylic acid blocks (abbreviation: PIB blocks), wherein the PIB blocks may, for example, be obtained by ozonolysis of halogenated butyl rubber, and to blends of these block copolycarbonates with elastomers.

Block copolycarbonates with polyisobutylene-.alpha.-haloketocarboxylic

The present invention provides flame-resistant polycarbonate moulding compositions with a concentration of alkali metal or alkaline earth metal salts and of silicon compounds and their preparation.

Flame-resistant polycarbonate moulding-compositions

The present invention provides telechelic polyisobutylenes having aspartic acid ester terminal groups, the production thereof and the use thereof as modifiers preferably for thermoplastic aromatic polycarbonates, and the mixing thereof with reaction-less polyisobutylenes.

Polyisobutylenes having aspartic acid ester terminal groups

The invention relates to blends of polycarbonates, branched, phenolic hydroxy functional dimeric fatty acid polyesters and at least one component selected from polyisobutylene, silicones and mineral oils.

Blends of polycarbonates, dimeric fatty acid polyesters and PIB rubbers,

The present invention provides polycarbonates with aliphatic ketocarboxyl end groups, optionally mixed with known aromatic polycarbonates, and a process for their preparation, the chain terminators used being those of formula (I): ##STR1## The present invention also provides mixtures of the polycarbonates or polycarbonate mixtures with reactionless polyisobutylenes.

Polycarbonates with aliphatic ketocarboxyl end groups, mixed with known

The present invention relates to a single-stage process for the preparation of polyisobutylene carboxylic acids from isobutylene-diene copolymers, which are optionally crosslinked or branched by means of a diolefine in the known manner, by reaction with ozone in the presence of a solvent.

Single-stage process for the preparation of polyisobutylene carboxylic

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Leverkusen, Germany

Richard Weider