Viscosity index improver concentrates

专利名称：Viscosity index improver concentrates发明人：Rajiv R. Taribagil,Stuart A. Taylor,Stuart

Briggs,Laurent Chambard

申请号：US14963477申请日：20151209公开号：US10011803B2公开日：20180703

专利附图：

摘要：A viscosity index improver containing, in diluent oil, one or more optionallyfunctionalized linear block copolymers having at least one block derived from alkenylarene covalently linked to at least one block derived from diene in an amount that is

greater than the critical overlap concentration (c*), in mass %, for the linear blockcopolymers in the diluent oil; and ester base stock and/or at least one star (or radial)polymer, the star polymer being present in an amount such that the c/c* value of the starpolymer in the concentrate falls within the range of from 0.01 to about 1.6, wherein c isthe concentration in mass % of star polymer in the concentrate and c* is the criticaloverlap concentration in mass % for the star polymer in the diluent oil used to form theconcentrate.

申请人：Infineum International Limited

地址：Abingdon GB

国籍：GB

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