- Size selectivity in lipase catalysed tetrol acylation
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Size selectivity of Candida antarctica lipase B (CAL-B) was examined in the acylation of pentaerythritol with oleic acid. Biolubricant mixtures consisting of mono-, di-, tri-, and tetraoleates were expected in variable excess. Enzymatic tetraoleate format
- Happe, Manuel,Kouadio, Martial,Treanor, Christopher,Sawall, Jan-Phillip,Fornage, Antoine,Sugnaux, Marc,Fischer, Fabian
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- A catalytic synthesis of neopentyl polyol fatty acid ester method and catalyst
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The present invention relates to a catalytic synthesis method for neopentyl polyol fatty acid ester and a catalyst. The catalytic synthesis method comprises the following step of: enabling fatty acid methyl ester to react with neopentyl polyol fatty acid ester in the presence of a catalyst, thereby obtaining a neopentyl polyol fatty acid ester product, wherein the catalyst comprises a main catalyst and a cocatalyst, and the cocatalyst is any one or a combination of carboxylates. The catalytic synthesis method has the advantages such as high catalytic efficiency, short reaction time, a simple post-treatment process, low color and luster, excellent emulsification resistance, environment friendliness and the like. The present invention further relates to a combined catalyst used for an ester exchange reaction, and an application of the combined catalyst to catalyzing ester exchange to synthesize the neopentyl polyol fatty acid ester.
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Paragraph 0057-0058
(2018/04/01)
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- Size selectivity in lipase catalysed tetrol acylation
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Size selectivity of Candida antarctica lipase B (CAL-B) was examined in the acylation of pentaerythritol with oleic acid. Biolubricant mixtures consisting of mono-, di-, tri-, and tetraoleates were expected in variable excess. Enzymatic tetraoleate formation was suppressed under solvent conditions; however, this size selectivity was lost without solvent and tetra-acylated pentaerythritol accumulated in up to 93%. The lipase caused size selectivity persisted over a broad temperature range from 35 to 95 °C. A Fischer-Speier esterification showed that substrate bulkiness was only a minor contributor to observed size selectivity. All in all, switch on/off size selectivity using CAL-B allowed to vary pentaerythritol biolubricant compositions in an unprecedented manner.
- Happe, Manuel,Kouadio, Martial,Treanor, Christopher,Sawall, Jan-Phillip,Fornage, Antoine,Sugnaux, Marc,Fischer, Fabian
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