Abstract: A lubricity additive for fuels with sulphur content of not more than 0.05 wt % is described herein. The lubricity additive comprises a polyol ester or a mixture of polyol esters derived from C8-C18 saturated and/or unsaturated fatty acids. The polyol esters is produced by: i) esterification of a C8-C18 saturated or unsaturated fatty acids, or a mixture thereof, with a polyhydric alcohol; ii) transesterification of an oil or a mixture of oils, with fatty acid composition comprising C8-C18 saturated and/or unsaturated fatty acids, with a polyhydric alcohol. The preferred fatty acids are unsaturated C18 fatty acids, more particularly, oleic acid whereas the preferred polyhydric alcohol is neopolyol, more particularly, trimethylol propane and its isomers. A fuel composition comprising a major amount of fuel with sulphur content of not more than 0.05 wt % and a minor amount of the lubricity additive is also described herein. The amount of the lubricity additive is not more than 0.1 wt %.
Type:
Application
Filed:
September 27, 2005
Publication date:
June 8, 2006
Applicant:
Malaysian Palm Oil Board
Inventors:
Yuen Choo, Sit Cheng, Ah Ma, Yusof Basiron
Abstract: A cost effective and less energy demanding method of producing ester oils or lubricant base oils, particularly fatty monoesters and fatty polyol esters, by esterifying palm fatty acid, which is abundant from the fat splitting process, with a monohydric alcohol or polyhydric alcohol in the presence of an acid catalyst at elevated temperature wherein an azeotroping agent, particularly toluene, is used to facilitate continuous removal by distillation, of water formed as a by-product during the esterification reaction. The esterification reaction is completed within 5 hours and palm fatty esters as produced with the current method exhibit comparable lubricity and biodegradability.
Type:
Application
Filed:
November 1, 2004
Publication date:
June 2, 2005
Applicant:
Malaysian Palm Oil Board
Inventors:
Yuen Choo, Sit Cheng, Ah Ma, Basiron Yusof
Abstract: A method for the chromatographic separation of vitamin E isomers such as &agr;-tocopherol, &bgr;-tocopherol, &ggr;-tocopherol, &dgr;-tocopherol, &agr;-tocotrienol, &bgr;-tocotrienol, &ggr;-tocotrienol and &dgr;-tocotrienol from a vitamin E containing mixture by combining the vitamin E mixture with an adsorbent to effect adsorption of the vitamin E isomers on the adsorbent; and then selectively desorbing the vitamin E isomers from the adsorbent with a solvent under supercritical conditions.
Type:
Grant
Filed:
February 2, 2001
Date of Patent:
December 2, 2003
Assignee:
Malaysian Palm Oil Board
Inventors:
Choo Yuen May, Ma Ah Ngan, Yusof Basiron
Abstract: The invention discloses a process to delay clouding in palm olein by the addition of a crystallization inhibitor to the palm olein. The palm olein is first heated to a temperature of between 60 to 140° C. A small proportion of crystallization inhibitor with a hydrophilic-lipophilic balance value between 1 and 16 is added to a sample of palm olein and the mixture is stirred until homogenous. The stirred mixture is then added to the pre-heated palm olein and the resultant mixture is stirred until homogenous and is cooled before packing into individual containers.
Type:
Application
Filed:
October 2, 2002
Publication date:
April 10, 2003
Applicant:
MALAYSIAN PALM OIL BOARD
Inventors:
Nor Aini Idris, Radzuan Jamaludin, Hanirah Hassan