Process for producing oligomers
AssigneeMalaysian Palm Oil Board
InventorsTian Lye Ooi, Salmiah Ahmad, Shoot Kian Yeong, Chun Ming Teoh
Life of this patent
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Abstract
The present invention relates to a process for producing oligomers and a method for improving the low temperature properties of fatty alkyl esters by using these oligomers. The oligomers according to the present invention are used as pour point depressant and cloud point reducer to improve the pour point and cloud point of fatty alkyl esters such as isopropyl, butyl, ethyl, ethylhexyl esters particularly fatty acid methyl esters at low temperature.
Claims12
A process for preparing oligomers comprising the steps of:
- (a) preparing palm oil derivative by reacting palm kernel oil with a peroxyacid;
- (b) reacting the product from step (a) with a polyhydric alcohol to form oligomer;
- and
- (c) esterifying said oligomer of step (b) with an acid selected from the group consisting of acrylic acid, methacrylic acid, methyl methacrylic acid, ethyl methacrylic acid, propyl methacrylic acid and butyl methacrylic acid to form polyester oligomer.
A composition for lowering the pour point and cloud point of a fatty alkyl ester comprising of:
- (a) a fatty alkyl ester;
- (b) at least one polyester oligomer obtained from an esterification between an oligomer and an acid selected from the group consisting of acrylic acid, methacrylic acid, methyl methacrylic acid, ethyl methacrylic acid, propyl methacrylic acid and butyl methacrylic acid;
- wherein the oligomer is formed by a reaction among a palm oil derivative, a peroxyacid and a polyhydric alcohol, and
- (c) a sorbitan ester.
A method for lowering pour point and cloud point of hydrocarbon fluid comprising adding into the hydrocarbon fluid 1% to 4% of a polyester oligomer by weight at a temperature ranging from 25° C. to 90° C.:
- wherein the polyester oligomer is obtained from an esterification between an oligomer and an acid selected from the group consisting of acrylic acid, methacrylic acid, methyl methacrylic acid, ethyl methacrylic acid, propyl methacrylic acid and butyl methacrylic acid:
- and the oligomer is formed by a reaction among a palm oil derivative, a peroxyacid and a polyhydric alcohol.
Dependencies are inferred from the claim text.