Compositions – Electrolytes for electrical devices
Patent
1993-06-15
1994-11-22
Willis, Jr., Prince
Compositions
Electrolytes for electrical devices
252 464, 5253275, 525341, C10M15708, C10M15706, C08F22038
Patent
active
053666496
ABSTRACT:
Modified copolymers usable as additives for lubricants and having antiwear and viscosity index-improving properties are prepared by the modification of ethylene-propylene copolymers or ethylene-propylene-diene terpolymers in such a was as to fix the sulphur and phosphorus. Such modified copolymers contain 0.2 to 2% phosphorus, and 0.4 to 4% sulphur and are used in a lubricating composition at a rate of 0.25 to 10%.
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Born Maurice
Durand Jean-Pierre
Keromest Catherine
Institut Francais du Pe'trole
Silbermann James M.
Willis Jr. Prince
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