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- W2885232125 abstract "Dispersant viscosity modifiers (DVMs) are multi-functional lubricant additivescombining in one additive composition, dispersancy and the ability to improve theviscosity of a lubricant, at high engine temperatures, sufficiently to maintain efficientlubrication. Compounds useful for this purpose are characterized by a polar groupattached to a relatively high molecular weight hydrocarbon chain. Polymericcompounds that were studied for possible use as DVMs were maleated ethylene–propylenecopolymers and copolymers containing an alkyl methacrylate and vinylamine-containing monomers.The current method used by Lubrizol to prepare grafted polar monomers ontosaturated polymers is a solvent-based chemical route, which involves precipitation,filtration, drying and then dissolution in base oil. Because of those drawbacks, analternative synthesis needs to be found to get a much more cost-effective product.Therefore, the main objectives of this research were to apply melt techniques toreplace the solvent-based free radical grafting reaction and to optimise the graftinglevel without product detriment. [Continues.]" @default.
- W2885232125 created "2018-08-22" @default.
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- W2885232125 date "2007-01-01" @default.
- W2885232125 modified "2023-09-24" @default.
- W2885232125 title "Dispersant viscosity improvers for lubricating oil compositions" @default.
- W2885232125 hasPublicationYear "2007" @default.
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