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US 8,075,804 B2Granted
Antioxidant compositions useful in biodiesel and other fatty acid and acid ester compositions
AssigneeEastman Chemical Company
InventorsThomas Edward Carter, Joy Lynn Laningham, Phillip Montgomery Hudnall, Sharon Metcalf Cline
Life of this patent
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Abstract
Compositions containing phenolic antioxidant solutions are provided. The invention further provides methods of making and using such compositions as well as compositions that contain both biodiesel and at least one antioxidant concentrate solutions and blended fuel compositions containing biodiesel blended with other fuels.
Claims22
A composition comprising:
- a) between about 25% and about 35% by weight of tert-butyl hydroquinone,
- b) between about 1.0% and about 3.0% by weight of citric acid,
- c) between about 35% and about 45% by weight of diethylene glycol monobutyl ether,
- d) between about 5% and about 10% by weight of propylene glycol, and
- e) between about 20% and about 30% by weight of n-butyl acetate.
2 more elements
A composition comprising:
- a) between about 15% and about 35% by weight of tert-butyl hydroquinone,
- b) between about 1.0% and about 3.0% by weight of citric acid,
- c) between about 35% and about 45% by weight of diethylene glycol monobutyl ether,
- d) between about 5% and about 10% by weight of propylene glycol, and
- e) between about 20% and about 30% by weight of n-butyl acetate,
- wherein the composition comprises 0% to 10% by weight of total surface active agents.
3 more elements
Dependencies are inferred from the claim text.