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US 9,434,674 B2Granted
Latent heat storage using renewable phase change materials
AssigneeTrent University
InventorsSuresh S. Narine, Michael C. Floros
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Abstract
A method of producing a diol diester, which includes reacting a fatty acid alkyl ester having 6 to 30 carbon atoms, an α,ω-alkanediol having n carbon atoms, wherein n is an integer from 2 to 22; and a basic transesterification catalyst, is provided. Use of the diol diesters as phase change materials is also provided.
Claims26
A method of producing a diol diester comprising reacting:
- a fatty acid alkyl ester having 6 to 30 carbon atoms;
- an α,ω-alkanediol having n carbon atoms, wherein n is an integer from 2 to 22;
- and
- about 0.01 to 1.0 wt. % (based on the weight of the mixture) of a basic transesterification catalyst;
- wherein the mixture is reacted at a reaction temperature of at least about 60° C. to provide a first reaction product comprising the diol diester;
- and
- the method further comprises recrystallizing the idol diester produced by the reaction.
4 more elements
A method of producing a diol diester comprising reacting:
- a fatty acid alkyl ester having 6 to 30 carbon atoms;
- wherein the fatty acid alkyl ester comprises one or more unsaturated fatty acid methyl esters;
- an α,ω-alkanediol having n carbon atoms, wherein n is an integer from 2 to 22;
- and
- about 0.01 to 1.0 wt.% (based on the weight of the mixture) of a basic transesterification catalyst;
- wherein the mixture is reaction temperature of at least about 60° C. to provide a first reaction product comprising the diol diester;
- and the method further comprises hydrogenating the first reaction product.
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A method of producing a diol diester consisting essentially of reacting:
- an aliphatic carboxylic acid alkyl ester having 6 to 30 carbon atoms,
- an α,ω-alkanediol having n carbon atoms, wherein n is an integer from 2 to 22, and
- about 0.01 to 1.0 wt.% (based on the total weight of the starting mixture) of a basic transesterification catalyst;
- wherein the reaction is conducted at a reaction temperature of at least about 60° C. to provide a first reaction product comprising the diol diester while substantially removing alkanol from the reacted mixture via distillation;
- and
- (c) diluting the reacted mixture with a solvent to form a product solution;
- (d) filtering the product solution to remove the basic transesterification catalyst and provide a filtered solution;
- and
- (e) recrystallizing the diol diester from the filtered solution to provide a recrystallized diol diester.
6 more elements
Dependencies are inferred from the claim text.