Dispersant-viscosity improvers for lubricating oil and fuels
    5.
    发明授权
    Dispersant-viscosity improvers for lubricating oil and fuels 有权
    用于润滑油和燃料的分散剂 - 粘度改进剂

    公开(公告)号:US06677282B2

    公开(公告)日:2004-01-13

    申请号:US10311511

    申请日:2002-12-16

    IPC分类号: C10M14500

    摘要: Hydrocarbyl substituted carboxylic compositions and derivatives thereof useful as dispersant/viscosity improvers for lubricating oil and fuel compositions. Carboxylic compositions are derived from (A) a hydrocarbon polymer having Mn ranging from about 20,000 to about 500,000, and (B) an &agr;,&bgr;-unsaturated carboxylic compound prepared by reacting (1) an active methylene compound of the formula (I), and (2) a carbonyl compound of the general formula (II), wherein Ra is H or hydrocarbyl and Rb is a member of the group consisting of H, hydrocarbyl and (III), wherein each R′ is independently R or OR and each R is, independently, H or a hydrocarbyl group; and lower alkyl acetals, ketals, hemiacetals and hemiketals of the carbonyl compound (2). Carboxylic derivative compositions are obtained by reacting the carboxylic compositions with a reactant selected from the group consisting of (a) amines characterized by the presence within their structure of at least one condensable H—N

    摘要翻译: 烃基取代的羧基组合物及其衍生物可用作润滑油和燃料组合物的分散剂/粘度改进剂。 羧酸组合物衍生自(A)Mn在约20,000至约500,000范围内的烃聚合物,和(B)通过使(1)式(I)的活性亚甲基化合物, 和(2)通式(II)的羰基化合物,其中R 5'是H或烃基,R b是由H,烃基和(III)组成的组的成员,其中每个R'是 独立地为R或OR,并且每个R独立地为H或烃基; 和羰基化合物(2)的低级烷基缩醛,缩酮,半缩醛和半缩醛。 羧酸衍生物组合物通过使羧基组合物与选自(a)胺的特征在于在其结构内存在至少一个可缩合的HN基团的反应物,(b)醇,(c)活性金属或 活性金属化合物,和(d)(a)至(c)中任一项中的两种或多种的组合,(d)的组分与羧酸组合物以任何顺序同时或顺序反应。