Patent · US Expired

Powdered rubber containing modified fillers, process for the production thereof and use thereof

US6340724B1 · kind B1 · utility

8Cited by

8References

7Claims

0Family size

Assignee

PKU Pulverkautschuk Union GmbH · DE

Inventors

Udo Gorl · Meckenheim, DE
Reinhard Stober · Großkrotzenburg, DE
Hartmut Lauer · Salmünster, DE
Uwe Ernst · Mannheim, DE

Key dates

Filing date	Apr 19, 1999
Grant date	Jan 22, 2002
Priority date	—
Expiry date	Apr 19, 2019

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08J2321/00
WIPO fieldOther special machines
WIPO sectorMechanical engineering

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.