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:
Nov. 02, 1976
Roy I Yamamoto, Wappingers Falls, NY (US);
Carmen M Cusano, Poughkeepsie, NY (US);
Frank J Gaetani, Poughkeepsie, NY (US);
Texaco Inc., New York, NY (US);
Abstract
A fully formulated crankcase lubricating oil composition containing between about 0.1 and 10 wt. % of a tetrapolymer of 4-vinylpyridine (4-VP), a first alkyl methacrylate of the formula: ##STR1## a second alkyl methacrylate of the formula: ##STR2## and a third alkyl methacrylate of the formula: ##STR3## where R is alkyl of from 1 to 6 carbons, R.sup.1 is alkyl of from 10 to 15 carbons and R.sup.2 is alkyl of from 16 to 20 carbons, of a molecular weight between about 25,000 and 2,500,000 having a component ratio of 4-VP:C.sub.1 to C.sub.6 alkyl methacrylate:C.sub.10 -C.sub.15 alkyl methacrylate:C.sub.16 -C.sub.20 alkyl methacrylate of between about 2:10:78:10 and 10:30:30:30 and between about 0.1 and 5 wt. % of a calcium containing rust inhibitor, said composition having a sulfated metal ash content of between about 0.05 and 1 wt. %.