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. 03, 1976
Filed:
Nov. 16, 1972
Applicant:
Inventors:
Assignee:
Rhone-Progil, Paris, FR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C10M / ;
U.S. Cl.
CPC ...
2604045 ; 44 71 ; 252 / ; 2602 / ; 2602 / ;
Abstract
New lubricating oil additives are provided comprising the reaction product of a hydroxy compound, such as an alcohol or hydroxyaromatic compound, with an aliphatic chain substituted-carboxylic anhydride, acid, chloride, or ester, which aliphatic chain substituent is substantially saturated and contains at least about 30 carbon atoms, said reaction product being neutralized with an ashless basic compound, so that the final product or additive contains at least about 0.9%, up to about 2.5%, by weight of nitrogen. Lubricating oils, fuel oils, and carburants containing the new additives have excellent detergent, dispersing and anti-rust properties.