Lubricant compositions

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C - Chemistry, Metallurgy

10

M

253/57, 253/82,

C10M 133/16 (2006.01) C10M 135/00 (2006.01) C10M 137/04 (2006.01) C10M 141/10 (2006.01)

Patent

CA 2040819

Case EI-6114 LUBRICANT COMPOSITIONS Abstract of the Disclosure Gear oils and gear oil additive concentrates of enhanced positraction performance are described. They comprise: (i) at least one oil-soluble sulfur-containing extreme pressure or antiwear agent; (ii) at least one oil-soluble amine salt of a partial ester of an acid of phosphorus; and (iii) at least one oil-soluble succinimide of the formula Image where R1 is an alkyl or alkenyl group having an average of 8 to 50 carbon atoms, and each of R2, R3 and R4 is a hydrogen atom or an alkyl or alkenyl group having an average of up to about 4 carbon atoms. These compositions preferably contain one, more preferably two, and most preferably all three of the following additional components: (iv) at least one amine salt of a carboxylic acid; (v) at least one nitrogen-containing ashless dispersant; and (vi) at least one trihydrocarbyl ester of a pentavalent acid of phosphorus.

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