Additives package and magnetorheological fluid formulations...

Details Additives package and magnetorheological fluid formulations... Additives package and magnetorheological fluid formulations...

2007-01-17

2009-08-18

Koslow, C. Melissa (Department: 1793)

Compositions

Magnetic

Flaw detection or magnetic clutch

C252S405000, C252S406000, C252S400540

Reexamination Certificate

active

07575695

ABSTRACT:
An additives package for use in an MR fluid formulation is provided, as well as an MR fluid formulation containing the additives package. In one embodiment, the additives package comprises an organomolybdenum dithiocarbamate, an ashless dithiocarbamate, and a triazole compound, such as a tolutriazole compound. In another embodiment, the additives package may further include an aminic antioxidant, such as an alkylated diphenylamine. In another embodiment, the additives package is free of an organomolybdate ester. In another embodiment, the additives package consists of the organomolybdenum dithiocarbamate, the ashless dithiocarbamate, the triazole compound, and optionally the aminic antioxidant. In addition to the additives package, the magnetorheological fluid formulation comprises magnetizable particles, a carrier fluid, and a thickening agent.

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