Patent · US Expired

Process for producing pourable powered rubber containing filler

US4883829A · kind A · utility

9Cited by

3References

17Claims

0Family size

Assignee

Huls Aktiengesellschaft · DE

Inventors

Hans-Juergen Smigerski · Marl, DE
Uwe Ernst · Mannheim, DE

Key dates

Filing date	Apr 22, 1988
Grant date	Nov 28, 1989
Priority date	—
Expiry date	Apr 22, 2008

Classification

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

Abstract

Process for producing pourable powdered rubber with filler content independent of particle size. By adjusting to a pH in the range of 3.7 to 6.5 after the mixing of rubber latices or aqueous emulsions of rubber solutions with filler suspensions containing precipitant, and by using 0.1 to 2.0 phr of a selected metal salt, powdered rubbers can be produced with filler content independent of particle size.

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