Bayer Aktiengesellschaft

Holger Lutjens

Karl-Erwin Piejko

Christian Lindner

Gerd Fengler

Werner Struver

Wolfgang Podszun

Uwe Westeppe

Hans-Eberhard Braese

Robert Horst Bloodworth

Olaf Halle

Jurgen Kirsch

Georg Heger

Rudiger Plaetschke

Herbert Eichenauer

Dieter Wittmann

Reinhold M Klipper

Guido Steffan

Leo Morbitzer

Josef Buekers

Stefan Antons

Alfred Mitschker

Ralf Kruger

Dieter Constant

Suspension polymers having high swellability have low contents of soluble fractions if aliphatic peroxy esters are used as polymerization initiators.

Crosslinked bead-form polymers

Process for preparing crosslinked bead-form polymers

Monodisperse crosslinked polymers prepared by seed/feed polymerization have less tendency to tack when a microencapsulated monodisperse crosslinked polymer has been used as seed. Compared with the seed used, the seed/feed polymer obtained exhibits substantially less broadening of the particle size distribution when microencapsulated seed has been used.

Process for the preparation of crosslinked polymers

An improved aminomethylation process gives weakly-basic anion exchangers in an elegant way, with by-product obtained being able to be processed into a suitable starting material without problems.

Process for preparing weakly-basic anion exchangers and reagents

Powdery mixture of from 1 to 99 weight % of a graft polymer of resin-forming monomers on a rubber and from 99 to 1 weight % of a bisphenol and the use thereof for improving chemical materials.

Mixtures of bisphenols and graft polymers

A transparent thermoplastic molding composition containing:

Compatible polymer blends with thermoplastic polycarbonates

The invention relates to improved polymer blends of polyamides and vinyl polymers containing sulfonamide structural units. Polyamide molding compounds having reduced water absorption and improved dimensional stability coupled with good mechanical properties, such as impact strength and rigidity, minimal discoloration, high heat resistance and migration resistance, are thus obtained.

Polymer blends of polyamides and polymers containing sulfonamide

Interpolymers of aromatic polyesters and cross-linked (or partially cross-linked) rubbers and a process for their production in which a mixture of a cross-linked rubber in latex form containing reactive groups and an aqueous solution of an alkali metal or alkaline earth metal diphenolate is reacted with a solution of a dicarboxylic acid halide and/or a carbonyl halide in a water-immiscible solvent so that an aromatic polyester forms at the water/organic solvent phase boundary, which polyester goes over into the organic phase and the rubber at the same time also goes into the organic phase. The interpolymer of rubber and organic polyester thus formed is suitable for the production of moulded articles of all kinds by the methods of thermoplastic shaping such as extrusion and injection moulding.

Interpolymers of aromatic polyesters and rubbers

A process for the preparation of polymer combinations having high rubber contents from A) aromatic polyesters and B) at least partially cross-linked rubbers, in which

Polymer combinations with a high rubber content

The invention relates to compatible polymer mixtures of a polyamide and a special vinyl monomer containing copolymerized structural units of the bisphenol derivative type. The new mixtures are suitable for the production of thermoplastic molding compounds.

Mixtures of polyamides and special polymers containing phenol groups

Copolymers of fluoroethylenes and masked phenols of the formula ##STR1## wherein R.sup.1 is H, C.sub.1 -C.sub.4 -alkyl, which may be further ring substituted and in which X is OY or ##STR2## Y is Si(R.sup.3).sub.3, ##STR3## R.sup.3 is alkyl, cycloalkyl or aryl.

Preparation of fluoropolymers containing masked phenol groups

The invention relates to compatible blends having good surfaces of aromatic polycarbonates or poly(ester) carbonates and polyamides and, optionally, graft polymers and typical additives with addition of polymers containing sulfonamide units as compatibilizers, to a process for the production of these blends and to their use for the production of moldings having good surface properties.

Polymers containing sulfonamide units as compatibilizers for

Polymer mixtures of acrylate graft rubbers, certain special acrylate copolymers and optionally resinous vinyl polymers, containing special oxetanyl group-containing phosphites, have improved thermostability and are suitable inter alia for the fabrication of films.

Polymer mixtures having improved thermostability II

Polymer alloys containing resin-like polymers of monomers corresponding to formula (I) ##STR1## in which R.sup.1 =H, CH.sub.3,

Alloys of thermoplastic polymers containing oxetanyl groups

Plastics suitable for use as thermoplastic moulding compositions obtained from

Growing community of inventors

Cologne, Germany

Holger Lutjens