Multifunctional additive compositions enabling middle distillates to be operable in cold conditions
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United States of America Patent
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Feb 5, 2008
Grant Date -
Sep 4, 2003
app pub date -
Dec 27, 2000
filing date -
Dec 28, 1999
priority date (Note) -
Expired
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Abstract
The invention concerns a multifunctional additive enabling fuels to be operable in cold conditions, consisting of copolymers of at least a dicarboxylic compound with at least an olefin, and whereon are grafted nitrogenous functions and/or esters of general formula (I) wherein: R.sub.1 and R.sub.2, and R.sub.4 and R.sub.5, R.sub.3 and R.sub.6 are hydrogen or alkyl radicals, and x is selected among the amine salts and N-alkylpolyalkylenepolyamines and their monohydroxylated and polyhydroxylated derivatives, N-alkylpolyalkylenepolyamine alkylesters and esters, and alkylamines and N-alkylpolyalkylenepolyamines.
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