Stabilized fluids for industrial applications
AssigneeE. I. Du Pont de Nemours and Company
InventorsHARI BABU SUNKARA, Raja Hari Poladi
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Abstract
The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.
Claims9
A stabilized biodiesel fluid composition comprising:
- (a) a methyl ester based fluid selected from the group consisting of vegetable oil, algae oil, animal fat, tall oil and combinations thereof;
- (b) optionally, a petrodiesel fluid;
- and
- (c) at least one component selected from the group consisting of:
- (i) 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol (TAP);
- and
- (ii) a salt of a at least one mono C12-C30 carboxylic fatty acid and TAP having a molar ratio of up to 3 moles of mono C12-C30 carboxylic fatty acid per mole of TAP;
- and
- wherein the composition is characterized in that the stabilized biodiesel fluid composition has an oxidative stability index (OSI) of greater than about 10 hours at 110° C. as measured by AOCS 12b-92.
A method for stabilizing a biodiesel fluid composition comprising the steps:
- mixing together at or above ambient temperature:
- (a) a methyl ester based fluid selected from the group consisting of vegetable oil, algae oil, animal fat, tall oil and combinations thereof;
- (b) optionally, a petrodiesel fluid;
- and
- (c) at least one component selected from the group consisting of:
- (i) 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol (TAP);
- and
- (ii) a salt mixture comprising at least one mono C12-C30 carboxylic fatty acid and a TAP, the salt mixture having a molar ratio of up to 3 moles of mono C12-C30 carboxylic fatty acid per mole of TAP.
Dependencies are inferred from the claim text.