The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 29, 1988
Filed:
Apr. 05, 1988
Applicant:
Inventors:
Hans-Jurgen Smigerski, Marl, DE;
Uwe Ernst, Borken, DE;
Assignee:
Huls Aktiengesellschaft, Marl, DE;
Primary Examiner:
Int. Cl.
CPC ...
C08L / ; C08K / ; C08J / ; C08J / ;
U.S. Cl.
CPC ...
523334 ; 524434 ; 524435 ; 524436 ; 524437 ; 524442 ; 524548 ; 524552 ; 524556 ; 524565 ; 524571 ; 524573 ; 428402 ;
Abstract
A process for preparing a pourable powdered rubber containing filler, comprising preparing a blend by mixing a portion of said filler to be incorporated in said rubber product with 0.1 to 6.5 phr of a water-soluble salt of a Group IIa, IIb, IIIa or VIII metal of the Periodic Table and a rubber latex or aqueous emulsion of a rubber solution, adjusting the pH of the blend to a pH ranging from 3.2 to 8.6 by addition of an acid, adding the remaining amount of filler to the pH adjusted blend, separating the rubber containing filler from the aqueous phase of the blend, and drying the powdered rubber product obtained.