Modified polyisobutylene succinimide dispersants having...

Details Modified polyisobutylene succinimide dispersants having... Modified polyisobutylene succinimide dispersants having...

C - Chemistry, Metallurgy

10

M

C10M 133/56 (2006.01) C08F 8/32 (2006.01)

Patent

CA 2420516

A composition suitable for reducing sludge and degradation of elastomer seals in engines comprises an oil of lubrication viscosity and a minor amount of a sludge preventing/seal protecting nitrogen containing dispersant, which is a reaction product of a hydrocarbyl-substituted succinic acylating agent having a limited amount of low molecular weight substituent; and a polyamine or condensed polyamine containing less than 20 mole percent of polyamine components of 6 or fewer nitrogen atoms.

Composition appropriée pour réduire la formation de boue et la dégradation des joints d'étanchéité élastomères dans des moteurs, qui contient une huile à viscosité de lubrification et une quantité minime d'un dispersant contenant de l'azote qui empêche la formation de boue et protège les joints d'étanchéité. Ce dispersant est le produit de réaction d'un d'agent acylant succinique à substitution hydrocarbyle ayant une quantité limitée de substituant à poids moléculaire faible, et d'une polyamine ou polyamine condensée contenant moins de 20 moles pour cent de constituants polyamine ayant 6 atomes d'azote ou moins.

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