Resin-free succinimides process of making, and compositions cont

Details Resin-free succinimides process of making, and compositions cont Resin-free succinimides process of making, and compositions cont

1996-03-11

1997-07-01

McKane, Joseph

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525301, 548520, 548545, 549233, 549234, 508233, C08F 800, C07D40302

Patent

active

056440014

ABSTRACT:
This invention relates to novel pure hydrocarbyl succinylating agents, substantially pure derivatives thereof, to a method of preparation of pure substituted succinylating agents and their derivatives, and to the use of thereof as additives for fuels and lubricants. The hydrocarbyl substituted succinylating agents are pure because the real and apparent mole ratios of the succinyl groups to the hydrocarbyl groups in such agents are substantially the same. These are produced by reacting an olefin polymer such as poly(iso)butylene with maleic anhydride to form a hydrocarbyl substitued succinylating agent which is then cleaned by solvent extraction to remove any impurities therein before use in further reactions.

REFERENCES:
patent: 4482464 (1984-11-01), Karol et al.
patent: 5519092 (1996-05-01), Blackborow
CA 119: 229897w Fuel Compositions . . . detergent. Blackborow et al., 1993.
CA 121: 135072 n Derivatives of poly(iso)butene. Blackborow, 1994.

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