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:
Jul. 20, 1993
Filed:
Nov. 13, 1991
Applicant:
Inventors:
Martin C Green, Burlington, MA (US);
Mark A Wilkinson, Lexington, MA (US);
Bruce E Mackay, Framingham, MA (US);
Assignee:
Cabot Corporation, Boston, MA (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08K / ;
U.S. Cl.
CPC ...
524415 ; 4234491 ; 423450 ;
Abstract
Novel carbon blacks having an I.sub.2 No. of 26-34 mg/g; a CTAB of 26-34 m.sup.2 /g; a Tint of 46-54%; a DBP of 61-69 cc/100 g and a Dst/Dmode ratio of 1.31-136. Preferably the carbon blacks are additionally characterized by having a Number Median (D.sub.c /D.sub.p) of 2.7-3.1. Also disclosed are novel rubber and plastic compositions which, when the novel carbon blacks are incorporated therein, have lowered viscosity properties during subsequent processing.