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:
Jan. 31, 1984
Filed:
Apr. 19, 1982
Applicant:
Inventor:
Max J Wisotsky, Highland Park, NJ (US);
Assignee:
Exxon Research & Engineering Co., Florham Park, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 334 ; 252 / ; 252 325 ;
Abstract
Alkenyl succinimide or borated alkenyl succinimide dispersants as exemplified by a polyisobutenyl succinic anhydride - alkylene polyamine reaction product are substantially improved in their dispersancy properties in diesel engines by treating such dispersants at elevated temperatures with an oil-soluble strong acid, such as an alkaryl sulfonic acid or a phosphoric acid, such as a dialkyl monoacid phosphate. The treated dispersants are included in conventional lubricating oil formulations.