Pku Pulverkautschuk Union Gmbh

Udo G&ouml;rl

Reinhard Stober

Uwe Ernst

Hartmut Lauer

Matthias Schmitt

Andreas Gouw

Thomas Trempler

The invention relates to a process for preparing fine-particle free-flowing rubber powders, composed of carbon black fillers and a rubber, prepared by solution polymerization. The process operates on the basis of a two-phase system involving transfer of the organic rubber phase in a non-aggressive manner into the inorganic filler suspension, without addition of chemicals. A rubber/carbon black composite is formed. The process comprises measures to avoid clumping of product in the aqueous phase. After mechanical water removal and thermal drying, the product obtained flows freely and is a storage-stable powder or pellet and are markedly superior to the standard both in their processing and in their rubber-technology property profile.

Pulvurent rubber comprising carbon black filler, process for their preparation and application

Rubber powders with a high degree of filling are obtained by precipitating water-containing suspensions which contain fillers and rubber emulsions or rubber solutions. Use thereof to prepare vulcanizable rubber mixtures.

Rubber powders which contain large amounts of fillers, a process for preparing them and the use thereof

Pulverulent rubber powder containing filler which remains free-flowing even after exposure to mechanical stresses, a process for the production thereof, in which the rubber powder is obtained in two precipitation steps, and the use of these powders for the production of vulcanizable rubber compounds.

Pulverulent rubber powder containing filler, process of the production thereof and use thereof

Finely divided, pulverulent rubbers containing filler which contain further processing and vulcanization auxiliaries necessary for the production of vulcanizable rubber mixtures, which rubbers are pourable even after exposure to mechanical action, and to a process for the production thereof. The rubber powder is obtained within two precipitation steps. These rubber powders are used for the production of vulcanizable rubber mixtures. The fillers used, which comprise not only precipitated silicas but also carbon blacks known in the rubber industry, are optionally surface modified with organosilicon compounds.

Rubber powder compositions and process for the production thereof

Finely divided powdered rubbers containing filler which remain free-flowing even after exposure to mechanical stresses and to a process for the production thereof, in which the rubber powder is obtained in two precipitation steps, and to the use of these powders for the production of vulcanizable rubber compounds. The fillers used, which are both precipitated silicas and carbon blacks known in the rubber art, are surface-modifed by organosilicon compounds.

Growing community of inventors

Recklinghausen, Germany

Udo Görl

Growing community of inventors

Recklinghausen, Germany

Udo G&ouml;rl

Udo Görl