Bayer Aktiengesellschaft

Bayer Materialscience Ag

Lanxess Deutschland Gmbh

Rhein Chemie Rheinau Gmbh

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Winfried Jeske

Werner Obrecht

Hartmuth Buding

Hermann-Josef Weidenhaupt

Dirk Achten

Thomas Scholl

Ulrich Eisele

Jose Colinas-Martinez

Bianka Lorenz

Peter Kueker

Juergen Kempkes

Adolf Schmidt

Burkhard Köhler

Mathias Matner

Peter Wendling

Peter Reichert

Ludger Heiliger

Thomas Kleiner

Thomas Fr&uuml;h

The invention relates to low-viscosity, low-monomer aqueous polymer dispersions based on polychloroprene, and a process for the preparation thereof and the use thereof as a contact adhesive.

Low-viscosity aqueous adhesive polymer dispersions

Formulations based on anionically stabilized aqueous polymer dispersions, containing polychloroprene, to which carbon dioxide (CO) has been added, to a process for their preparation, to a device for increasing the carbon dioxide content of formulations based on anionically stabilized aqueous polymer dispersions, and to the use thereof in the production of adhesives, sealants, large-volume parts or coatings.

Formulations based on anionically stabilised, aqueous polymer dispersions

The invention relates to a process for preparing dithiols derivatized with dithiocarbamic acids, in which the derivatized dithiols are obtained in high yield and purity.

Preparation of derivatized dithiols

The present invention relates to crosslinked rubber particles modified by secondary amino-(meth)-acrylate groups, a process for their production, their use for the production of rubber vulcanizates or rubber molded bodies of all kinds and also the rubber vulcanizates or rubber molded bodies that can be obtained from the rubber particles.

Crosslinked rubber particles modified by amino(meth)acrylate groups

This invention relates to vulcanizable diene rubber compounds with a high capacity for the addition of sulfur to be varied while processing safety is maintained, for the production of improved rubber moldings, particularly tire components.

Diene rubber compounds for improved rubber moldings

The invention relates to rubber compounds based on rubber particles and phosphoryl polysulfides, as well as to vulcanizates or shaped articles prepared therefrom. The addition of phosphoryl polysulfides improves the strengthening effect of the rubber particles and the level of the mechanical properties, without lowering the resilience of the vulcanizates prepared therefrom.

Microgel-containing rubber compounds with phosphoryl polysulfides and vulcanizates or shaped articles prepared therefrom

The vulcanizates produced using the rubber mixtures according to the invention, in which the vulcanizates contain agglomerated rubber gels, are distinguished by improved mechanical properties with an at least equivalent damping behavior.

Rubber mixtures and vulcanizates containing agglomerated rubber gels

The present invention relates to rubber compounds comprising at least one rubber which contains double bonds, at least one rubber gel, and at least one sulfur-containing organosilicon compound. Vulcanized materials which can be employed in particular for the production of tire treads can be produced from the rubber compounds according to the invention.

Microgel-containing rubber compounds which comprise sulfur-containing organosilicon compounds

Microgel-containing rubber mixtures with masked bi-functional mercaptans and vulcanization products produced therefrom

This invention relates to vulcanizable rubber compounds based on styrene-butadiene rubber, which contain a special vulcanizing system, which are reinforced with silica and which contain a filler activator, for tire treads which exhibit improved abrasion-resistance.

Vulcanizable rubber compounds containing styrene-butadiene and butadiene rubbers

The rubber mixtures containing modified rubber gels according to the invention prepared from at least one rubber gel modified with compounds containing sulphur and reactive towards C&boxH;C double bonds and at least one rubber containing double bonds are preferable suitable for the production of vulcanizates which have an unusually strong reinforcing action in rubber vulcanizates. The vulcanisates furthermore exhibit unusually low dynamic damping at relatively elevated temperatures. They are thus particularly suitable for the production of low rolling resistance motor vehicle tire treads.

Rubber mixtures containing surface-modified cross-linked rubber gels

Rubber mixtures prepared from at least one styrene/butadiene rubber gel and at least one rubber which contains double bonds and optionally further fillers and rubber auxiliary substances are in particular suitable for the preparation of vulcanizates having unusually high damping at temperatures of from -20 to +20.degree. C. as well as unusually low damping at temperatures of from 40 to 80.degree. C. The rubber mixtures may therefore be used, for example, to manufacture vehicle tires which grip in the wet and have low rolling resistance.

Growing community of inventors

Burscheid, Germany

Winfried Jeske