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US 6,203,585 B1Granted
Pour point depression of heavy cut methyl esters via alkyl methacrylate copolymer
AssigneeThe Procter & Gamble Company
InventorVictoria Ann Majerczak
Life of this patent
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Abstract
Compositions are provided which comprise heavy cut methyl esters and copolymer additives. The compositions of the present invention have pour points which are lower than compositions containing only heavy cut methyl esters without copolymer additives. In particular, alkyl methacrylate copolymer additives are used to achieve desirable pour points. The present invention also encompasses processes for making methyl ester compositions having depressed pour points and methods of using said compositions.
Claims9
A biodiesel fuel composition comprising:
- (I) from about 95% to about 99%, by weight of the composition, of a methyl ester, or mixtures thereof, of fatty acids having from about 14 to about 24 carbon atoms;
- wherein said methyl ester has an iodine value from about 75 to about 125;
- and
- (II) from about 1% to about 5%, by weight of the composition, of a copolymer additive comprising:
- (A) from about 25% to about 75%, by weight of the copolymer additive, of a polymer comprising:
- (i) from about 70% to about 99.5%, by weight of the polymer, first repeating units, each derived from a C8-C15 alkyl methacrylate monomer;
- and
- (ii) from about 0.5% to about 30%, by weight of the polymer, second repeating units, each derived from a C16-C24 alkyl methacrylate monomer;
- and
- (B) from about 25% to about 75%, by weight of the copolymer additive, of a diluent which can be mineral oil vegetable oil, polyol ester or mixtures thereof.
7 more elements
Dependencies are inferred from the claim text.