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:
Feb. 24, 1987
Filed:
May. 31, 1985
Applicant:
Inventors:
William E Wright, Baton Rouge, LA (US);
Edward F Zaweski, Baton Rouge, LA (US);
Assignee:
Ethyl Corporation, Richmond, VA (US);
Primary Examiner:
Int. Cl.
CPC ...
C08L / ;
U.S. Cl.
CPC ...
1062 / ;
Abstract
An asphaltic composition of enhanced utility for vehicular pavement is described. It comprises a road paving grade of asphalt in admixture with a small amount of an alkylene dithiocarbamate such as methylene bis(dibutyldithiocarbamate) characterized by having a reduced increase in absolute viscosity to original absolute viscosity after thin film aging as measured by ASTM Test D 1754 at 140.degree. F. Such compositions exhibit enhanced resistance to oxidative degradation of the type normally experienced by road paving grades of asphalt.