Patents Represented by Law Firm Williams. Cleveland R. - Justia Patents Search

Patents Represented by Law Firm Williams. Cleveland R.

Oil compositions containing alkyl amine derivatives of copolymers of an alpha olefin or an alkyl vinyl ether and an unsaturated alpha, beta-dicarboxylic compound

Patent number: 4992080

Abstract: Oil compositions comprising crude oils, fuel oils, mineral oils and synthetic oils having high pour points are provided with one or more enhanced characteristics such as improved pour point, viscosity or viscosity index by the addition of alkyl amine or alkyl mercaptan derivatives of a copolymer comprising an alpha olefin or an alkyl vinyl ether and maleic anhydride.

Type: Grant

Filed: November 16, 1989

Date of Patent: February 12, 1991

Assignee: Conoco Inc.

Inventor: Hanh T. Le