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:
Aug. 08, 2000
Filed:
Sep. 25, 1998
Applicant:
Inventors:
Burkhard Freund, Erfstadt, DE;
Gerhard Kuhner, Hanau, DE;
Ulrich Sattler, Erfstadt, DE;
Karl Vogel, Alzenau, DE;
Assignee:
Degussa-Huls Aktiengesellschaft, Frankfurt, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C01D / ; B60C / ; B60C / ; B60C / ; C08J / ;
U.S. Cl.
CPC ...
4234491 ; 152525 ; 152450 ; 152451 ; 152564 ; 524495 ;
Abstract
Disclosed are improved carbon blacks and a process for producing them. The improved carbon blacks are distinguished from conventional blacks having the same CTAB surface, after incorporation into SSBR/BR rubber compositions, by a lower rolling resistance with equal or better wet skid behavior. They can be produced in conventional carbon black reactors by conducting the burning in the combustion chamber so that carbon nuclei form and are immediately brought into contact with the carbon black raw material.