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A viscosity index improver, a process for making a viscosity index improver, and a lubricating oil composition containing the same
A viscosity index improver, a process for making a viscosity index improver, and a lubricating oil composition containing the same
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机译：粘度指数改进剂，制备粘度指数改进剂的方法以及包含该粘度指数改进剂的润滑油组合物
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摘要
Lubricating oil dispersant VI improvers are made by grafting maleic anhydride to an ethylene/ alpha -olefin-non-conjugated diene terpolymer in a hydrogen-treated mineral oil solvent using a free radical and then reacting the grafted intermediate with an amine containing only one primary amine group, 1-6 amino nitrogen atoms and 20-36 carbon atoms.
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