摘要:
Process for manufacturing a chemical: chlorohydrins, epoxides, diols, diols derivatives, epoxy derivatives or mixtures thereof, in an industrial plant, comprising a step of chemical reaction for manufacturing the chemical and at least one step selected from the group consisting of storage, supply, removal, transfer, chemical treatment and physical treatment of compounds used or produced in such process, in which at least one aqueous effluent is generated, this aqueous effluent containing at least one of overhead waters, surface waters, ground waters, waters from drinking water distribution networks, waters from industrial water distribution networks, plant cleaning waters, or waters used for heating and cooling the plant, this aqueous effluent containing at least one compound other than water and exhibiting at least one of the following features, a water solubility at 25° C. greater than or equal to 0.01 g/kg of water and a boiling point at 1013 mbar, greater than or equal to −100° C., in which at least one part of the generated aqueous effluent is collected, and in which at least one portion of the collected aqueous effluent is recycled in the manufacturing process.
摘要:
PROBLEM TO BE SOLVED: To provide an efficient method for producing dichloropropanol by producing glycerin of high purity from an animal oil or a vegetable oil using a solid catalyst and causing the glycerin as a raw material to react with a chlorinating agent, and a method for producing epichlorohydrin from the dichloropropanol as a raw material. SOLUTION: The method for producing dichloropropanol comprises (a) a step of producing a fatty acid alkyl ester and glycerin by bringing oil-and-fat materials into contact with an alcohol in the presence of the solid catalyst and (b) a step of causing the glycerin as a raw material to react with the chlorinating agent. The method for producing epichlorohydrin comprises using the dichloropropanol. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for recovering a catalyst in a simple process with low energy in producing chlorohydrins by a chlorinating reaction of a multihydroxy group-substituted aliphatic hydrocarbon and/or an ester of the multihydroxy group-substituted hydrocarbon using a carboxylic acid-based compound as the catalyst. SOLUTION: It is found that the catalyst present as an ester of the chlorohydrins can be recovered by extracting oligomers of the multihydroxy group-substituted aliphatic hydrocarbon, produced as a by-product in a chlorinating step, in an extraction step, and carrying out separation thereof. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for using glycerol, obtained from reproducible raw materials, as a starting product for manufacturing an organic compound. SOLUTION: The manufacturing method of an organic compound containing 3-18 carbon atoms comprises: (a) a first step where glycerol is manufactured from a reproducible raw material comprising a vegetable- or animal-derived fat or oil; and (b) a second step where the organic compound is manufactured from glycerol obtained in the first step. COPYRIGHT: (C)2008,JPO&INPIT
摘要:
PURPOSE:To obtain an optically active alcohol by the reduction of a ketone without reducing the double bond and triple bond by reducing a specific ketone with a trialkoxysilane in the presence of an optically active binaphthol titanium complex and hydrolyzing the reduction product. CONSTITUTION:This optically active alcohol of formula V (* represents an asymmetric carbon atom) can be produced by reducing a ketone of formula I [R1 and R2 each is a 1-8C alkyl, a halogenated lower alkyl, a cycloalkyl, a (substituted)phenyl, a 2-8C alkenyl or a 2-8C alkynyl] (e.g. methyl ethyl ketone) with a trialkoxysilane of formula III [R is a lower alkyl or a (substituted) phenyl] in the presence of an optically active binaphthol titanium complex of formula II [R3 and R4 each is a lower alkyl or a (substituted)phenyl; R5 is H, a halogen, an acyl, etc.; R6 is H, a halogen, a lower alkyl, an aryl, phenylthio, etc.; the dotted line is double bond or single bond] and hydrolyzing the resultant trialkoxysilyl ether of formula IV.