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:
Jun. 21, 1977
Filed:
Apr. 07, 1976
Albert R Sabol, Munster, IN (US);
Standard Oil Company (Indiana), Chicago, IL (US);
Abstract
This invention relates to a novel lubricant oil addition agent which is a phosphosulfurized C.sub.35 to C.sub.160 hydrocarbon modified N-(hydroxy and C.sub.50 - C.sub.160 alkyl-substituted benzyl) alkylene polyamine. Such novel addition agent imparts anti-oxidant and unexpected dispersancy functions to lubricant oils commonly used as crankcase lubricants for internal combustion engines. Such novel addition agent also imparts anti-oxidant and detergency functions to the less viscous oils used to lubricate automatic transmissions and at the same time prevent failure of the rubber seals used therein from deterioration (hardening) by oxidation and distortion softening by undue swelling. The present inventive addition agent unexpectedly provides both detergency and an anti-oxidant functions for lubricant oil which are superior to the related analog addition agent derived from the reaction of one molar proportion of a phosphosulfurized 500 to 2800 (Staudinger) molecular weight hydrocarbon with from 0.5 up to 4 molar proportion of an N-(hydroxy and C.sub.4 - C.sub.24 alkyl-substituted benzyl) alkylene polyamine.