Process for preparing a dispersant/vi improver

Details Process for preparing a dispersant/vi improver Process for preparing a dispersant/vi improver

C - Chemistry, Metallurgy

08

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253/115, 400/202

C08F 8/30 (2006.01) C08C 19/22 (2006.01) C08F 8/00 (2006.01) C08F 287/00 (2006.01) C10M 149/00 (2006.01) C10M 159/12 (2006.01)

Patent

CA 1339039

Improved dispersant/VI improver luboil additives are produced by reacting a star polymer with an alpha, beta unsaturated carboxylic acid or derivative to form an activated star polymer, which is then reacted with a) an alkyl carboxylic acid and b) an alkylamine or alkane polyol, or with the preformed product of reactants a) and b).

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