Fuel compositions containing propoxylate

Details Fuel compositions containing propoxylate Fuel compositions containing propoxylate

2007-07-31

2007-07-31

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Liquid fuels

Organic oxygen compound containing

C044S412000

Reexamination Certificate

active

09720257

ABSTRACT:
Fuel compositions for internal combustion engines, comprising a principle amount of a liquid hydrocarbon fuel and an amount, which has a cleaning effect, of at least one propoxylate additive of the formula Iwheren is an integer from 10 to 20 andR1is straight-chain or branched C8-C18-alkyl or C8-C18-alkenyl,if required in combination with at least one detergent additive, e.g. a polyalkylamine additive of the formula IIin-line-formulae description="In-line Formulae" end="lead"?R2—NH2  (II)in-line-formulae description="In-line Formulae" end="tail"?whereR2is a straight-chain or branched polyalkyl radical having a number average molecular weight of from about 500 to about 5000,and fuel additive compositions which contain propoxylates of the formula I and, if required, further additives, such as the aforementioned polyalkylamines of the formula II, as intake valve cleaners.

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