Fuel compositions containing a polyisobutene succinimide deterge

Details Fuel compositions containing a polyisobutene succinimide deterge Fuel compositions containing a polyisobutene succinimide deterge

1995-06-07

1996-12-31

Willis, Jr., Prince

Fuel and related compositions

Liquid fuels

Heterocyclic carbon compound containing a hetero ring having...

44331, C10L 122

Patent

active

055889735

ABSTRACT:
A fuel composition which comprises a major amount of a liquid hydrocarbon fuel and, in an amount to provide detergency, a polyisobutene (PIB) succinimide derived from the reaction of a polyisobutene--substituted succinic acylating agent and an amine having at least one reactive hydrogen bonded to an amine nitrogen is characterised in that the polyisobutene--substituted succinic acylating agent is obtained by a thermal route and the polyisobutene substituent is derived from a highly reactive polyisobutene ie having a high proportion of vinylidene groups --CH.sub.2 CMe.dbd.CH.sub.2. The PIB-substituted succinic acylating agent is preferably obtained by the thermal reaction of the highly reactive polyisobutene with a succinic acylating agent e.g. maleic anhydride.

REFERENCES:
patent: 3960515 (1976-06-01), Honnen
patent: 4098585 (1978-07-01), Vartanian et al.
patent: 4605808 (1986-08-01), Samson
patent: 4832702 (1989-05-01), Kummer et al.
patent: 5089028 (1992-02-01), Abramo et al.
patent: 5114435 (1992-05-01), Abramo et al.
patent: 5122507 (1992-05-01), Harrison
patent: 5256165 (1993-10-01), Herbstman et al.

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