Gasoline additives for reducing the amount of internal...

Details Gasoline additives for reducing the amount of internal... Gasoline additives for reducing the amount of internal...

2007-04-17

2007-04-17

Toomer, Cephia D. (Department: 1714)

Fuel and related compositions

Liquid fuels

Heterocyclic carbon compound containing a hetero ring having...

C044S412000, C044S443000, C044S418000

Reexamination Certificate

active

10299453

ABSTRACT:
Compositions and methods are disclosed for reducing combustion chamber deposits (CCD) and/or intake valve deposits (IVD) in spark ignition internal combustion engines. A butyrolactam alkoxylate (BLA) and/or a butyrolactam derivative (BLD) of this invention or a mixture with at least one additional compound of this invention is added to a liquid hydrocarbon or liquid hydrocarbon-oxygenate gasoline each in an amount of about 0.0005-0.5 wt % of the gasoline. Preferably the gasoline is unleaded. The preferred additional components include polyethers (PE) and polyisobutylene amine (PIBA).

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