Abstract:
The present invention relates to: a method for producing 5 hydroxymethyl furfural (HMF) which comprises the steps a c described below; and a method for producing 5 hydroxymethyl furfural oxide which comprises the steps a d described below. Each of the methods simply and economically produces high purity 5 hydroxymethyl furfural or an oxide thereof from a starting sugar material. Step a: A step wherein the staring sugar material is subjected to a dehydration reaction in the presence of a reaction solvent thereby producing HMF in the reaction solvent and obtaining a reaction solvent containing HMF. Step b: A step wherein HMF is extracted from the reaction solvent containing HMF which has been obtained in step a into a hydrophobic solvent thereby obtaining a hydrophobic solvent containing HMF. Step c: A step wherein HMF is extracted from the hydrophobic solvent containing HMF which has been obtained in step b into water thereby obtaining an aqueous solution containing HMF. Step d: A step wherein HMF which has been obtained in step c is oxidized.
Abstract:
The present invention relates to a process for producing 2,5-furan dicarboxylic acid by subjecting 5-hydroxymethylfurfural to oxidation reaction in the presence of water, oxygen and an activated carbon-supported metal catalyst containing a noble metal, the process including the following steps (1) and (2) in which the steps (1) and (2) are carried out under a pressure of not less than 0.1 MPa and less than 1.0 MPa while maintaining a reaction solution at a pH of not more than 7, and an amount of the oxygen fed until a time at which the step (2) is terminated is not less than 120 mol% and not more than 140 mol% on the basis of the 5-hydroxymethylfurfural charged: step (1): conducting the oxidation reaction at a temperature of not lower than 50°C and not higher than 110°C until a content of the 5-hydroxymethylfurfural in the reaction solution falls within the range of not less than 0 mg/kg and not more than 1,000 mg/kg; and step (2): subjecting the reaction solution obtained after completion of the step (1) to the oxidation reaction at a temperature of not lower than 140°C and not higher than 250°C.
Abstract:
PROBLEM TO BE SOLVED: To provide a binder composition for producing a template capable of improving the final strength of the template, a binder composition for the mold using the same, and a method for producing the mold using the same.SOLUTION: A binder composition for producing a template which comprises a 5-hydroxymethylfurfural composition produced from molasses, and an acid-curable resin. Preferably, the 5-hydroxymethylfurfural composition is produced through a step of subjecting molasses to a dehydration reaction in a solvent in the presence of an acid catalyst to produce a reaction mixture, and a step of extracting the reaction mixture with an organic solvent to produce the 5-hydroxymethylfurfural composition.
Abstract:
PROBLEM TO BE SOLVED: To provide an alkylether carboxylic acid type surfactant excellent in high foamability, high foam amount and high fresh feeling (stop feeling) at the time of rinsing, and high stability in aqueous solution to various metallic ions.SOLUTION: The surfactant is a polyoxyalkylene alkylether acetic acid expressed by general formula (1): RO-(EO)(PO)-CHCOOM or a salt thereof. In formula, R represents a 6-24C alkyl or alkenyl group; EO represents an ethyleneoxide group; PO represents a propyleneoxide group; m and n each denotes an average addition mole number of EO and PO, respectively, the total (m+n) of m and n is a number of 0.4 to 10, n denotes a number of 0.4-5, and M represents H, an alkali metal, alkaline earth metal (1/2 atom) or an amine.
Abstract translation:要解决的问题:提供在漂洗时具有优异的高起泡性,高泡沫量和高清新感(停止感),在各种金属离子的水溶液中的稳定性优异的烷基醚羧酸型表面活性剂。 表面活性剂是由通式(1)表示的聚氧化烯烷基醚乙酸:RO-(EO)(PO) n CO 2或其盐。 在式中,R代表6-24C烷基或链烯基; EO表示环氧乙烷基; PO表示环氧丙烷基; m和n分别表示EO和PO的平均加成摩尔数,m和n的总数(m + n)为0.4〜10的数,n表示数为0.4〜5,M表示H, 碱金属,碱土金属(1/2原子)或胺。 版权所有(C)2013,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of easily and economically producing a highly pure 5-hydroxymethylfurfural oxide from sugar raw material.SOLUTION: A method of producing a 5-hydroxymethylfurfural oxide includes following processes a-d. In the process a: sugar raw material is subjected to a dehydration reaction in the presence of a reaction solvent to produce 5-hydroxymethylfurfural (HMF) in the reaction solvent, and the reaction solvent including HMF is obtained. In the process a: sugar raw material is subjected to a dehydration reaction in the presence of a reaction solvent to produce 5-hydroxymethylfurfural in the reaction solvent, and the reaction solvent including HMF is obtained. In the process b: HMF is extracted into a hydrophobic solvent from the reaction solvent including HMF obtained in the process a, and the hydrophobic solvent including HMF is obtained. In the process c: HMF is extracted into water from the hydrophobic solvent including HMF obtained in the process b, and an aqueous solution including HMF is obtained. In the process d: HMF obtained in the process c is oxidized.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing 5-hydroxymethylfurfural of high purity efficiently and economically by a simple method.SOLUTION: A manufacturing method for 5-hydroxymethylfurfural includes steps (a)-(c) below: (a) a step of subjecting a sugar raw material to a dehydration reaction in the presence of a reaction solvent thereby forming 5-hydroxymethylfurfural in the reaction solvent to obtain the reaction solvent containing 5-hydroxymethylfurfural; (b) a step of extracting 5-hydroxymethylfurfural from the reaction solvent containing 5-hydroxymethylfurfural obtained in the step (a) into a hydrophobic solvent to obtain the hydrophobic solvent containing 5-hydroxymethylfurfural; and (c) a step of extracting 5-hydroxymethylfurfural from the hydrophobic solvent containing 5-hydroxymethylfurfural obtained in the step (b) into water to obtain an aqueous solution containing 5-hydroxymethylfurfural.
Abstract:
PROBLEM TO BE SOLVED: To provide a hydraulic composition excellent in initial flowability without causing a curing retardation.SOLUTION: The hydraulic composition contains water, hydraulic powder, a dispersant, and tartronic acid and/or its salt. The content of the tartronic acid and/or its salt is 0.007 to 0.15 pt.wt. based on 100 pts.wt. of the hydraulic composition.