Fuel and related compositions – Liquid fuels – Organic nitrogen compound containing
Reexamination Certificate
2005-03-29
2005-03-29
Toomer, Cephia D. (Department: 1714)
Fuel and related compositions
Liquid fuels
Organic nitrogen compound containing
C044S335000, C044S432000, C044S433000
Reexamination Certificate
active
06872230
ABSTRACT:
The present invention relates to additives for enhancing the lubricity of hydrocarbon fuel oils, the inventive additive composition including one or more of the reaction products of (i) an alkylated polyamine and (ii) urea or isocyanate, or the salt adducts of these reaction products. More particularly, the present invention provides for a process for improving the lubricity of hydrocarbon fuel oils, which are low in inherent lubricity due to treatment to reduce sulfur and aromatic components for improved emissions.
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Chang Zen-Yu
Cross Collin W.
Goliaszewski Alan E.
Pruett S. Blake
Betzdearborn, Inc.
Hoffmann & Baron , LLP
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