Secondary and tertiary amines as friction modifiers for...

Solid anti-friction devices – materials therefor – lubricant or se – Lubricants or separants for moving solid surfaces and... – Organic nitrogen compound

Reexamination Certificate

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C508S287000, C508S545000

Reexamination Certificate

active

07439213

ABSTRACT:
A composition of a major amount of an oil of lubricating viscosity; a secondary or tertiary amine being represented by the formula R1R2NR3wherein R1and R2are alkyl groups of at least 6 carbon atoms and R3is hydrogen, a hydrocarbyl group, a hydroxyl-containing alkyl group, or an amine-containing alkyl group; and a dispersant, provides high static coefficients of friction and a durable positive slope during oxidative and mechanical stressing, particularly as a friction component of an automatic transmission.

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