Blends of lubricant basestocks with high viscosity complex...

C - Chemistry – Metallurgy – 10 – M

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Details

C10M 105/42 (2006.01) C10L 1/14 (2006.01) C10L 10/04 (2006.01) C10M 105/46 (2006.01) C10M 111/00 (2006.01) C10M 129/78 (2006.01) C10M 129/82 (2006.01) C10M 169/04 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2263101

A lubricating oil comprising an add mixture of the following components: (A) a complex alcohol ester basestock which comprises the reaction product of an add mixture of the following: (1) a polyhydroxyl compound represented the general formula: R(OH)n wherein R is any aliphatic or cyclo-aliphatic hydrocarbyl group and n is at least 2, provided that the hydrocarbyl group contains from about 2 to 20 carbon atoms; (2) a polybasic acid or an anhydride of a polybasic acid, provided that the ratio of equivalents of the polybasic acid to equivalents of alcohol from the polyhydroxyl compound is in the range between about 1.6:1 to 2:1; and (3) a monohydric alcohol, provided that the ratio of equivalents of the monohydric alcohol to equivalents of the polybasic acid is in the range between about 0.84:1 to 1.2:1; wherein the complex alcohol ester exhibits a viscosity in the range between about 100-700 cSt at 40 ~C and having a polybasic acid ester concentration of less than or equal to 70 wt.%, based on the complex alcohol ester; and (B) at least one additional basestock.

La présente invention porte sur une huile lubrifiante comprenant un mélange ajouté des composantes ci-après: (A) une huile de base d'ester d'alcool complexe contenant le produit de réaction d'un mélange ajouté des matières ci-après: (1) un composé de polyhydroxyle représenté par la formule générale: R(OH)¿n? où R représente tout groupe hydrocarbyle aliphatique ou cyclo-aliphatique et où n est au moins égal à 2, étant entendu que le groupe hydrocarbyle contient entre environ 2 et 20 atomes de carbone; (2) un acide polybasique ou un anhydride d'un acide polybasique, étant entendu que le rapport équivalents de l'acide polybasique sur équivalents de l'alcool extrait du composé de polyhydroxyle se situe dans la gamme comprise entre environ 0,84:1 et 1,2:1; où l'ester d'alcool complexe présente, à 40 ·C, une viscosité comprise entre environ 100 et 700 cSt, avec une concentration d'ester d'acide polybasique inférieure ou égale à 70 % en poids, en fonction de l'ester d'alcool complexe; et (B) au moins une huile de base supplémentaire.

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