Biodiesel cold flow improver
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United States of America Patent
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Dec 2, 2014
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N/A
app pub date -
Dec 16, 2008
filing date -
Dec 18, 2007
priority date (Note) -
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Abstract
The present invention is directed to the use of alkyl(meth)acrylate polymers or copolymers of the formula (I)
as cold flow improvers in biodiesel fuel (or bio-fuel) and biodiesel compositions incorporating said polymers or copolymers, obtained by nitroxyl mediated controlled free radical polymerization,
- whereinIn is the initiator fragment starting the polymerization reaction;E is an end group bearing at least one stable free nitroxyl radical, which is bound via an oxygen atom to the polymer or copolymer; or a group which results from a substitution or elimination reaction of the attached stable free nitroxyl radical;Poly is any polymer or copolymer formed from ethylenically unsaturated monomer(s);andy is a number 1 or greater than 1 indicating the average number of end groups E attached to Poly.
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