Functional fluids

Details Functional fluids Functional fluids

C - Chemistry, Metallurgy

10

M

C10M 171/02 (2006.01) C10G 65/04 (2006.01) C10M 109/02 (2006.01) C10M 111/06 (2006.01) C10M 171/00 (2006.01)

Patent

CA 2508029

This invention relates to base stocks and base oils that exhibit an unexpected combination of high viscosity index (130 or greater) and a ratio of measured- to-theoretical high-shear/low-temperature viscosity at -30C or lower and the methods of making them. Specifically, the present invention relates to low- viscosity base stocks and base oils as used in functional fluids. More specifically, the present invention relates to automatic transmission fluids showing surprising low temperature Brookfield viscosities and methods to produce them.

Cette invention concerne les stocks de base et les huiles de base montrant une combinaison inattendue d'indice élevé de viscosité (130 ou plus grand) et un rapport mesuré/théorique de cisaillement élevé/viscosité basse température à -30C ou moins ainsi que leur procédé de fabrication. Spécifiquement, la présente invention concerne les stocks de base à faible viscosité et les huiles de base en tant que produits d'emploi dans des fluides fonctionnels. Plus spécifiquement, la présente invention concerne des fluides de transmission automatique montrant des viscosités Brookfield surprenantes à basse température et des procédés permettant de les produire.

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