Arkema France

Arkema Inc.

Conor M Dowling

Nicholas Michael Martyak

Michael D Gernon

Scott Charles Schmidt

Noah Eliot Macy

Jianfeng Lou

Daniel Alford

Paul D Fellenger

Gerald P Franco

The present invention relates to acrylic block polymers, either block copolymers or homopolymers, synthesized by a controlled free-radical process, and their use as low temperature flow modifiers in bio-derived fuel compositions. They are especially useful in modifying the low temperature flow behavior in bio-derived fuels. The acrylic polymers are especially useful as cold filter plugging control additives in bio-derived fuels.

Acrylic polymer low temperature flow modifiers in bio-derived fuels

A stabilized alkyl ester fuel is disclosed. The stabilized alkyl ester fuel comprises alkyl esters, an effective amount of an alkylalkanolamine, and an effective amount of an alkylhydroxylamine. The alkyl ester fuel is stabilized to oxidative degradation of the alkyl esters of unsaturated fatty acids found in alkyl ester fuels.

Use of mixtures of alkylalkanolamines and alkylhydroxylamines as stabilizers for alkyl ester fuels

Compositions containing unsaturated fatty esters may be stabilized against atmospheric oxidation by the addition of an antioxidant package containing a phenolic oxidant and a nonphenolic oxygen scavenger, which may be a hydroxylamine, an amine N-oxide, an oxime, or a nitrone. If an amine N-oxide is used, it may be used with or without a phenolic antioxidant. Compositions treated in this manner show good resistance to atmospheric oxidation and resultant viscosity increase.

Fatty ester compositions with improved oxidative stability

Growing community of inventors

Ambler, PA, United States of America

Conor M Dowling