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:
May. 17, 1994
Filed:
Jul. 06, 1989
Applicant:
Inventors:
Malcolm Waddoups, Westfield, NJ (US);
Barry J Howlett, Westfield, NJ (US);
Assignee:
Exxon Chemical Patents Inc., Linden, NJ (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ;
U.S. Cl.
CPC ...
252 / ; 252 33004 ; 252 / ; 252 / ; 252 49006 ; 252 / ; 252 50 ; 252 37 ;
Abstract
According to the present invention, oleaginous compositions having improved stability are provided, wherein high molecular weight ashless dispersants and metal detergents are preblended at a temperature of at least 100.degree. C. for a period of from 1 to 10 hours, cooled to at least 85.degree. C. and admixed with additional additives, including oil soluble copper antioxidants and zinc dialkyl dithiophosphate antiwear agents.