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. 27, 1979
Filed:
Apr. 02, 1976
Carmen M Cusano, Poughkeepsie, NY (US);
Ronald E Jones, Glenham, NY (US);
Texaco Inc., New York, NY (US);
Abstract
A pour depressant polyalkylacrylate comprising an interpolymer of (A) C.sub.1 -C.sub.15 alkylacrylate and (B) C.sub.16 -C.sub.22 alkylacrylate, said interpolymer having an average molecular weight of between about 1000 and 25,000, an A:B weight ratio of between about 90:10 and 50:50, an average alkyl side chain length between about 11 and 16 carbons, and prepared under neat conditions; a lubricating oil composition thereof comprising a major amount of lubricating oil and between about 0.005 and 10 wt.% of the interpolymeric pour depressant and between about 0.5 and 30 wt.% of a viscosity index improving ethylene-propylene copolymer of a molecular weight between about 10,000 and 150,000, a propylene content of 20 to 70 mole% and polydispersity index of less than 5; and a method of improving component compatibility, pour depression, and viscosity index comprising admixing a major amount of hydrocarbon lubricating oil with a minor amount of the interpolymeric polyalkylacrylate and ethylene-propylene copolymer.