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:
Mar. 28, 1978
Filed:
Apr. 05, 1976
Gerard Soula, Meyzieu, FR;
Philippe Duteurtre, Le Havre, FR;
Orogil, Paris, FR;
Abstract
New compositions, based on alkenylsuccinimides, are provided which impart useful dispersing, detergent, anti-rust and anti-foam properties when employed as an additive in a lubricating oil. The new compositions are alkenylsuccinimides obtained by condensing an alkenylsuccinic anhydride with at least one polyamine of the formula: ##STR1## in which formula R'.sub.4 is a -r-O-r' radical, R'.sub.5 is one of the radicals -r-O-r'-NH.sub.2, -r'-NH.sub.2, or -r-OH, R'.sub.6 is one of the radicals -r-O-r-NH.sub.2, -r'-NH.sub.2, -r-OH, C.sub.1 -C.sub.4 -alkyl or phenyl, and r and r' have the definition given fully below using a molar ratio of polyamine to alkenylsuccinic anhydride of less than 1.