Low pressure derived mixed phosphorous- and sulfur-containing re

Details Low pressure derived mixed phosphorous- and sulfur-containing re Low pressure derived mixed phosphorous- and sulfur-containing re

1990-07-31

1993-02-09

McAvoy, Ellen

Compositions

Electrolytes for electrical devices

252 467, 252 496, C10M13700, C10M13704

Patent

active

051850907

ABSTRACT:
A phosphorous- and sulfur-containing additive and its use to impart anti-wear and/or antioxidant properties to oleaginous compositions such as fuels and lubricating oils, particularly power transmission compositions, such as automatic transmittion fluids, is disclosed. The additive comprises a mixture of products formed by simultaneously reacting (1) a betahydroxy thioether, such as thiobisethanol, and (2) a phosphorous-containing reactant, such as tributyl phosphite. The reaction is carried out under reduced pressure conditions (e.g., -40 KPa to -100 KPa) to limit the amount of thioether species in said additive to less than about 45 mole %.

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