890090-93-4Relevant articles and documents
Preparation method of naphthenic ester which is advantageous in low apparatus cost, short esterification time and simple manufacturing process
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Paragraph 0038-0049, (2019/07/31)
The invention discloses a preparation method of naphthenic ester. The preparation method includes a first esterification step and a hydrogenation step. In the first esterification step, a starting raw material containing a reaction component and an alcohol component is subjected to an esterification reaction under the conditions of normal pressure and no catalysts, so as to form a crude aromatic esterification product with an acid value in a range of larger than 10 mgKOH/g and smaller than 80mgKOH/g, wherein the reaction component contains an aromatic material with a reaction group, and the reaction group is at least one of a sulfonic group, a carboxylic group, a carboxylate group and a carboxylic anhydride group, while the crude aromatic esterification product contains an aromatic ester component and the residual starting material. In the hydrogenation step, the crude aromatic esterification product is in contact with hydrogen and is subjected to a hydrogenation reaction in the existence of a catalyst so as to form a crude naphthenic ester product, wherein the crude naphthenic ester product contains a naphthenic ester component.
ASYMMETRIC CYCLIC DIESTER COMPOUNDS
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Page/Page column 24-25, (2011/06/26)
Compounds useful as plasticizers and the synthesis thereof are disclosed. In general, the invention includes mixed alkyl/aryl asymmetric cyclic diesters where the aryl and alkyl ester moieties are attached to a cyclic structure at vicinal carbons. The invention also includes synthetic processes of making such compounds. Blends of these asymmetric cyclic diesters with other plasticizers are demonstrated to be of use in plasticizing polymers.