Method for preparing engine seal compatible dispersant for lubri

Details Method for preparing engine seal compatible dispersant for lubri Method for preparing engine seal compatible dispersant for lubri

1988-12-30

1992-01-14

Willis, Jr., Prince

Compositions

Electrolytes for electrical devices

252351, 252357, 5482622, 5482624, 5482628, C10M13344, C10M10570

Patent

active

050808150

ABSTRACT:
A dispersant composition having improved compatibility with fluorohydrocarbon-containing elastomeric engine seals, said dispersant composition comprising the reaction product obtained by reacting a C.sub.30 -C.sub.250 hydrocarbyl-substituted succinic anhydride with aminoguanidine, or a basic salt thereof, at a reaction temperature of from about 155.degree. C. to about 200.degree. C.

REFERENCES:
patent: 3272746 (1966-09-01), Le Suer
patent: 3341542 (1967-09-01), Le Suer
patent: 4491527 (1985-01-01), Lange
patent: 4908145 (1990-03-01), Fenoglio

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