Polylactone aromatic esters and fuel compositions containing the

Details Polylactone aromatic esters and fuel compositions containing the Polylactone aromatic esters and fuel compositions containing the

1996-06-20

1997-04-22

Medley, Margaret

Fuel and related compositions

Liquid fuels

Containing organic -c

44391, 560 20, 560 22, 560 23, 560 43, 560 61, C10L 118, C10L 122

Patent

active

056225326

ABSTRACT:
Polylactone aromatic esters having the formula: ##STR1## wherein R.sub.1 is a hydrocarbyl group having a sufficient number of carbon atoms to render the compound soluble in hydrocarbons boiling in the gasoline or diesel fuel range;
R.sub.2 is an alkylene group of about 2 to 5 carbon atoms;
R.sub.3 and R.sub.4 are each independently hydrogen, hydroxy, nitro, amino, N-alkylamino having 1 to 6 carbon atoms in the alkyl group, or N,N-dialkylamino having 1 to 6 carbon atoms in each alkyl group, provided that R.sub.3 and R.sub.4 may not both be hydrogen;
and x is an integer from 1 to 25.
The polylactone aromatic esters of formula I are useful as fuel additives for the prevention and control of engine deposits.

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P. Dubois et al., "Macromolecular Engineering of Polylactones and Polylactides. 8. Ring-Opening Polymerization of .epsilon. -Caprolactone Initiated by Primary Amines and Trialkylaluminum", Macromolecules, 1992, Month unknown vol. 25, pp. 2614-2618.
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