Dispersant additive and lubricating oil composition containing s

Details Dispersant additive and lubricating oil composition containing s Dispersant additive and lubricating oil composition containing s

1991-05-22

1992-11-10

McAvoy, Ellen

Compositions

Electrolytes for electrical devices

525301, 5253317, 5253318, 525375, C10M15102

Patent

active

051620863

ABSTRACT:
An additive composition comprising a graft and amine-derivatized copolymer prepared from ethylene and at least one C.sub.3 to C.sub.10 alpha-monoolefin and, optionally, a polyene selected from non-conjugated dienes and trienes comprising from about 15 to 80 mole percent of ethylene, from about 20 to 85 mole percent of said C.sub.3 to C.sub.10 alpha-monoolefin and from about 0 to 15 mole percent of said polyene, the copolymer having a number average molecular weight ranging from about 5,500 to about 50,000 and having grafted thereon at least 1.8 molecules of a carboxylic acid acylating function per molecule of the copolymer and reacting the grafted copolymer with an amine substituted phenothiazine to form the grafted and amine-derivatized copolymer, and a lubricating oil composition containing same are provided.

REFERENCES:
patent: 4160739 (1979-07-01), Stambaugh et al.
patent: 4517104 (1985-05-01), Bloch et al.
patent: 4816172 (1989-03-01), Kapuscinski et al.

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