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- W92930717 abstract "The synthesis of new palm based polyol esters as the biodegradable base stock forlubricant production was conducted via chemical transesterification of palm basedmethyl esters with trimethylolpropane, 2-ethyl-2-(hydroxymethyl)- 1 ,3-propanediol(TMP). Both palm oil (POME) and palm kernel methyl esters (PKOME) were usedas the starting materials and sodium methoxide as the catalyst. The reactions werecarried out under different temperatures (80 to 140°C) and vacuum pressures (0.1 to500 mbar). Palm based TMP esters containing 98% w/w triesters was successfullysynthesized in 45 minutes under 10 mbar vacuum, T=1 20°C, and 3 .9: 1 molar ratio ofPOME to TMP. While the effect of methyl esters to TMP ratio was minimal, theoptimum molar ratio was found at 3.5 :1 and 3.8 :1 in palm kernel and palm oil TMPester synthesis respectively. The amount of catalyst required was less than 1.0%w/w of the total mass of reactants. The optimal reaction conditions were:temperature, BO°C for POME and 1 20°C for PKOME; vacuum, 20 mbar; catalyst,sodium methoxide at 0.7% (w/w); POME:TMP, 3.8:1; PKOME:TMP, 3 .5:1;duration,1hour. Analysis o f the reaction products was performed using GC with a high temperature capillary column, SGE HT5 operated at a temperature gradient of6°C/min starting from 80°C to 340°C. Before injection, the sample was derivatizedwith N,O-Bis(trimethylsilyl)trifluoroacetamide (BSTFA) in ethyl acetate at 40°C forat least 10 min. This procedure provided a complete separation of the reactionproducts: TMP, palm based methyl esters, monoesters, diesters and triesters." @default.
- W92930717 created "2016-06-24" @default.
- W92930717 creator A5064076343 @default.
- W92930717 date "2003-10-01" @default.
- W92930717 modified "2023-09-27" @default.
- W92930717 title "Synthesis Of Palm-Based Trimethylolpropane Esters And TheirPotential Use As Lubricant Basestock" @default.
- W92930717 hasPublicationYear "2003" @default.
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