Star Polymers and Compositions Thereof
    1.
    发明申请
    Star Polymers and Compositions Thereof 有权
    星形聚合物及其组合

    公开(公告)号:US20070244018A1

    公开(公告)日:2007-10-18

    申请号:US11738572

    申请日:2007-04-23

    IPC分类号: B01D19/04

    摘要: The invention provides a composition comprising: (a) a star polymer comprising: (i) a core portion comprising a polyvalent (meth)acrylic monomer, oligomer or polymer thereof or a polyvalent divinyl non-acrylic monomer, oligomer or polymer thereof; and (ii) at least two arms of polymerized alkyl(meth)acrylate ester; and (b) an oil of lubricating viscosity, wherein the core portion further comprises a functional group of formula (I): —CH2—C(R1)(C(═O)A)-Y—  (I) wherein R1 is hydrogen, a linear or branched alkyl group containing 1 to 5 carbon atoms; A is nitrogen or oxygen; and Y is a free radical leaving group selected from the group consisting of one or more atoms or groups of atoms which may be transferred by a radical mechanism under the polymerisation conditions, a halogen, an —O—N═ group and an —S—C(═S)— group. The invention further provides the use of the composition in an oil of lubricating viscosity as a dispersant, a viscosity modifier or a precursor to a dispersant viscosity modifier.

    摘要翻译: 本发明提供一种组合物,其包含:(a)星形聚合物,其包含:(i)包含多价(甲基)丙烯酸单体,低聚物或聚合物或多价二乙烯基非丙烯酸单体的核心部分,其低聚物或聚合物; 和(ii)聚合的(甲基)丙烯酸烷基酯的至少两个臂; 和(b)具有润滑粘度的油,其中所述核心部分还包含式(I)的官能团:<?在线公式描述=“在线公式”end =“lead”→> (C(-O)A)-Y-(I)<β在线公式描述=“在线公式”末端 =“尾”→其中R 1为氢,含有1至5个碳原子的直链或支链烷基; A是氮或氧; 并且Y是选自一个或多个原子或原子基团的自由基离去基团,其可以在聚合条件下通过自由基机理转移,卤素,-ON-基团和-SC(-S ) - 组。 本发明还提供了组合物在润滑粘度油中作为分散剂,粘度调节剂或分散剂粘度调节剂前体的用途。