Modifiers for improving clarity of multifunctional VI improver oil compositions
AssigneeTexaco Inc.
InventorsMaria M. Kapuscinski, Richard A. Abranshe
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Abstract
A method of producing a clear dispersant OCP VI improver. The method comprises admixing a polar modifier to a VI improver during the preparation process or to a final product at a sufficiently high temperature to produce the desired clear dispersant VI improver.
Claims5
A method of making a clear dispersant olefin copolymer VI improver comprising mixing a dispersant VI improver with a polar modifier, selected from the group consisting of diols, water and 1-methyl-2-pyrrolidone at a temperature of about 50.degree. C. to about 200.degree. C. for a period of about 5 to about 20 minutes to provide a clear dispersant VI improver product.
A method of making a clear dispersant olefin copolymer VI improver comprising mixing a dispersants VI improver with 1,4-butanediol or 1-methyl-2-pyrrolidone at a temperature of about 50.degree. C. to about 200.degree. C. for a period of about 5 to about 20 minutes to provide a clear dispersant VI improver product.
Dependencies are inferred from the claim text.