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. 18, 1991
Applicant:
Inventors:
Lyle E Moran, Sarnia, CA;
William J Murphy, Brights Grove, CA;
Assignee:
Exxon Research & Engineering Company, Florham Park, NJ (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10C / ;
U.S. Cl.
CPC ...
208 44 ; 208-4 ;
Abstract
This invention relates to a method for producing asphalt that has improved low temperature properties. More specifically, the penetration and Penetration Index of an asphalt can be increased if the asphalt is heat soaked in the presence of a dehydrogenation agent at a temperature above the temperature at which oxidation of the asphalt occurs and below the temperature at which coking is initiated. Polyvinyl chloride and a chlorinated wax are preferred dehydrogenation agents.