4826-87-3Relevant articles and documents
Synthesis of trimethylolpropane esters with immobilized lipase from Candida sp. 99-125
Tao, Yifeng,Chen, Biqiang,Liu, Luo,Tan, Tianwei
, p. 151 - 155 (2012)
The lubricants of the future have to be more environmentally adapted, have a higher level of performance. Synthesis esters (SEs) which can be used as raw materials for biodegradable lubricant base oils are increasing in popularity due to superior technical properties. Direct esterification of trimethylolpropane (TMP) with fatty acid in a solvent free system, by immobilized lipase from Candida sp. 99-125 was studied. Investigations of important factors were carried out involving temperature, time, enzyme amount, substrates molar ratio and water content. For 2 g caprylic acid, under the optimal conditions, with 0.4 g immobilized lipase, at substrates molar ratio 1:10 (TMP to acid), temperature 40 °C and water content controlled under 0.8% (w/w), the total conversion of fatty acid with TMP reached up to 96% and the formation of trisubstituted TMP esters reached 93%. Water content controlled during esterification process was found to be critical for high yield of direct esterification.
Subsititue Material As Well As Production Process And Application
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Paragraph 0099; 0100, (2017/08/28)
The invention relates to a production process of a functionalized material containing acid groups and an application thereof. The material is used as a nonhomogenous catalyst, and can be used for removing organic and inorganic compounds in product streams, process streams and waste liquid, or can be used as a cation and anion exchanger, a metal chromatography material, a solid phase purifying or extracting material, a fixed biological moleculaar material, a solid phase sythesizing material and a chromatography material. The invention also relates to a novel sulfonic acid or hypophosphorous organic funtionalized silica gel and metal salts thereof.
FUNCTIONALISED MATERIALS, PROCESS FOR THE PRODUCTION AND USES THEREOF
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Paragraph 0041; 0058, (2015/04/22)
The invention relates both to processes for the production of functionalised materials containing alkyl sulfonic acids groups and their use as heterogeneous catalysts. The invention also relates to precursors of these new products and new organopolysiloxane sulfonic acids.