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:
Aug. 16, 1988
Filed:
May. 20, 1985
Applicant:
Inventor:
Jean-Louis Le Coent, Le Havre, FR;
Assignee:
Orogil, , FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 332 ; 252 18 ; 252 33 ; 252 334 ; 252 39 ; 252 407 ;
Abstract
Disclosed are detergent-dispersant additives for lubricating oils that are made by contacting an alkylarylsulfonic acid with an alkaline earth base in the presence of an alcohol having a boiling point in excess of 80.degree. C., water, chloride ions and preferably a C.sub.1 -C.sub.4 carboxylic acid. The products may be made more basic by carbonation. The disclosed additives, when not carbonated, have a TBN up to about 40 and, when carbonated, have a TBN of up to about 100.