C - Chemistry – Metallurgy – 10 – M
Patent
C - Chemistry, Metallurgy
10
M
C10M 141/06 (2006.01) C10M 169/04 (2006.01)
Patent
CA 2648664
A composition of a major amount of an oil of lubricating viscosity; a secondary or tertiary amine being represented by the formula R1R2NR3 wherein R1 and R2 are alkyl groups of at least 6 carbon atoms and R3 is 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.
L'invention concerne une composition comprenant une quantité majeure d'huile de viscosité lubrifiante; et une amine secondaire ou tertiaire de formule R1R2NR3. Dans cette formule, R1 et R2 désignent des groupes alkyle présentant au moins six atomes de carbone et R3 désigne hydrogène, un groupe hydrocarbyle, un groupe alkyle contenant hydroxyle, ou un groupe alkyle contenant amine. Cette composition comprend également un dispersant, présente des coefficients de frottement statique élevés et une pente positive durable pendant un stress oxydatif et mécanique, en particulier lorsque la composition est utilisée comme composant de frottement d'une transmission automatique.
Abraham William D.
Baker Mark R.
Lahiri Shreyasi
Patterson Suzanne M.
Tipton Craig D.
Ridout & Maybee Llp
The Lubrizol Corporation
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