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:
Sep. 03, 2013
Filed:
Jul. 12, 2010
Chor Huang, Avon Lake, OH (US);
Lewis Breon, Aurora, OH (US);
Chor Huang, Avon Lake, OH (US);
Lewis Breon, Aurora, OH (US);
The Lubrizol Corporation, Wickliffe, OH (US);
Abstract
A lubricant composition comprising an oil of lubricating viscosity; (A) 0.05 to 1.5 percent by weight of a copolymer comprising 70 to 79 percent by weight of units derived from ethylene ('E'), having aof 50,000 to 100,000,/less than 3, density ('D') of 860 to 896 kg/m, and a melting point (“T”) of 15° C. to 60° C., wherein E and Tfulfill the expression3.44−206≧;and (B) 0.05 to 1.5 percent by weight of a block copolymer comprising a first block which comprises a vinyl aromatic comonomer and a second block which comprises a diene comonomer, the diene monomer-containing block being hydrogenated; wherein the weight ratio (A):(B) is 20:80 to 60:40; exhibits good low temperature performance and durability.