NITROGEN CONTAINING DISPERSANT-VISCOSITY IMPROVERS

    公开(公告)号:CA2254614A1

    公开(公告)日:1999-06-03

    申请号:CA2254614

    申请日:1998-11-30

    Applicant: LUBRIZOL CORP

    Abstract: A composition comprising a hydrocarbon polymer having M n ranging from 20,000 to about 500,000, when the polymer is not a star polymer, and up to about GPC peak molecular weight of 4,000,000 when the polymer is a star polymer having attached thereto pendant groups Aa and Bb wherein each A is independently select ed from members of the group consisting of: groups of the formula wherein R3 is H or hydrocarbyl, R4 is a divalent hydrocarbylene group, n = 0 or 1, and each of R9 and R10 is independently H, alkoxyhydrocarbyl, hydroxyhydrocarbyl , hydrocarbyl, aminohydrocarbyl, N-alkoxyalkyl- or hydroxyalkyl-substituted aminohydrocarbyl, or a group of the formula ~Y~c~R11~M, wherein each Y is independently a group of the formula r --R11-o-, each R11 is a divalent hydrocarbyl group, R12 is as defined above for R9 and R10 and M is H, hydrocarbyl, amino, an amide group, an amide-containing group, an acylamino group, an imide group, or an imide-containing group, and c is 0 or a number ranging from 1 to about 100, or one of R9 and R10 taken together with the adjacent N constitute a N-N group; and each B is independently selected from members of the group of formula: wherein each X is independently O, S, or NRb, each Rb is independently H, NH2, hydrocarbyl, hydroxy-hydrocarbyl or aminohydrocarbyl, and each Z is independently a group of the formula wherein each of R3, R4, and n is as defined hereinabove; Ra is an ethylene group, a propylene group, which groups optionally have hydrocarbyl or hydroxyhydrocarbyl substituents, or wherein J is H, SH, NH2, or OH, and tautomers thereof; a is 0 or a number rangin g from 1 to about 50, and b is a number ranging from 1 to about 30.

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