Lube basestock with improved low temperature properties

Details Lube basestock with improved low temperature properties Lube basestock with improved low temperature properties

C - Chemistry, Metallurgy

10

M

C10M 101/02 (2006.01) C10G 73/02 (2006.01) C10G 73/06 (2006.01)

Patent

CA 2586616

This invention relates to basestocks and base oils with improved low temperature properties and formulated lubricant compositions or functional fluids created by blending at least one such lube basestock with at least one component selected from dispersants, detergents, wear inhibitors, antioxidants, rust inhibitors, demulsifiers, extreme pressure agents, friction modifiers, multifunction additives, viscosity index improvers, pour point depressants, and foam inhibitors. In particular the invention relates to dewaxed lube basestocks having a Free Carbon Index of less than 4.3 and an Epsilon Carbon mole% of less than 14%. Formulated engine oils using such dewaxed basestocks exhibit improved low temperature properties as may be measured by the Mini Rotary Viscometer test.

L'invention concerne des huiles de base lubrifiantes à propriétés basse température améliorées et des compositions lubrifiantes ou des fluides fonctionnels formulés créés par mélange d'au moins une huile de base lubrifiante avec au moins un composant sélectionné parmi les composants suivants : dispersants, détergents, antiusures, antioxydants, antirouilles, démulsifiants, agents extrême pression, modificateurs de friction, additifs multifonction, améliorants d'indice de viscosité, abaisse-point d'écoulement, et antimousses. L'invention concerne en particulier des huiles de base déparaffinées présentant un indice de carbone libre inférieur à 4,3 et un pourcentage molaire de carbone epsilon inférieur à 14 %. Les huiles pour moteur utilisant lesdites huiles de base déparaffinées présentent des propriétés basse température améliorées telles que mesurées par un test faisant intervenir un mini-viscosimètre rotatif.

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