摘要:
PROBLEM TO BE SOLVED: To provide a manufacturing method of epichlorohydrin, by dechlorohydrogenation of a dichlorohydrin mainly composed of 1,3-dichloro-2-propanol, which is excellent in the light of yield, waste water load, and energy used in its manufacturing. SOLUTION: In a process in which epichlorohydrin is generated by dechlorohydrogenation of a dichlorohydrin mainly composed of 1,3-dichloro-2-propanol, it was found that the reaction liquid after dechlorohydrogenation of dichlorohydrin can be separated by the difference of specific gravities of an oil layer and a water layer, and that the property of liquid separation can be controlled by limiting the molar ratio of 1,3-dichloro-2-propanol and 2,3-dichloro-1-propanol of the dichlorohydrin to be dechlorohydrogenated within 87:13-100:0. Optionally, the resultant oil layer and the water layer are treated intermediately. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing dichlorohydrin exhibiting high selectivity of 1,3-dichloro-2-propanol by decreasing the content in dichlorohydrin of 2,3-dichloro-1-propanol exhibiting a low reaction rate in the dehydrochlorination reaction in the production of dichlorohydrin by chlorinating glycerol. SOLUTION: In the reaction process of chlorinating glycerol, while 1,3-dichloro-2-propanol is produced via 3-chloro-1,2-propanediol, 2-chloro-1,3-propanediol does not further react to produce 2,3-dichloro-1-propanol resulting in temporary apparent accumulation of 2-chloro-1,3-propanediol. The problem is solved by removing apparently accumulating 2-chloro-1,3-propanediol as an intermediate of 2,3-dichloro-1-propanol. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing epichlorohydrin by collecting dichlorohydrin by distillation or the like without using a special device by eliminating hydrogen chloride contained in a reaction mixture obtained by the production of the dichlorohydrin by using glycerol as a raw material without neutralization with a base, and carrying out the dehydrochlorination of the collected dichlorohydrin. SOLUTION: It has been found that the problem can be solved by eliminating the hydrogen chloride contained in the reaction mixture formed by the production of the dichlorohydrin by the reaction with the epichlorohydrin of the objective substance of the reaction by the repeated various studies for solving the problem. COPYRIGHT: (C)2009,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 reduce the amount of an alkali required in a subsequent dehydrochlorination process and the amount of water and a salt formed in the dehydrochlorination process by efficiently recovering hydrogen chloride from the resulting reaction mixture in the process of producing dichlorohydrin by way of chlorinating glycerin. SOLUTION: It has been discovered that the above problem can be solved by separating and recovering hydrogen chloride gas by way of heating at least a part of the reaction mixture comprising dichlorohydrin, hydrogen chloride and water obtained by chlorinating glycerin. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an organic waste treating material which enables using the bacteria which are naturally attached to organic waste as they are, promoting the propagation of the fermentation decomposition bacteria and stably continuing high decomposing rate for a long term in the fermentation decomposition method of extinct decomposition type. SOLUTION: Chaff containing 10% water (1.2 kg), powdery 4MgCO3.Mg(OH)2.5H2O(500 gr) and service water (2 kg) are charged into a garbage treating machine as the base material for treatment and the temperature of the vessel contents is elevated up to 50 deg.C under stirring. Subsequently, the garbage (1 kg) composed of cabbage (230 gr), Japanese radish (160 gr), onion (100 gr), boiled rice (150 gr), raw sardine (30 gr), pork (90 gr), mandarine orange (30 gr), apple (90 gr) and macaroni (120 gr) is charged into the garbage treating machine. After the charging, the treatment temperature is set 50 deg.C, is continuously stirred for 3 hr after the charging and, thereafter, the intermittent string operation comprising stopping for 50 min and stirring for 10 min is repeated.
摘要:
PURPOSE:To provide a polymerizable composition having a high refractive index and a high Abbe number, excellent in workability, moldability, heat resistance and impact resistance, and useful for plastic lenses, etc., by adding a specific amount of a monoisocyanate, etc., to a specified mixture. CONSTITUTION:This polymerizable composition is obtained by adding a monoisocyanate and/or a tertiary polyisocyanate, such as isopropenyl-alpha, alpha- dimethylbenzylisocyanate, in an amount of 0.1-2 equivalent based on alcoholic hydroxyl groups in a mixture to the mixture obtained by dissolving (A) 20-60 pts.wt. of a multi-functional (meth)acrylate in (B) 80-40 pts.wt. of a styrenic compound or a radically polymerizable monofunctional unsaturated monomer mixture solution containing the styrenic compound. The multi-functional (meth) acrylate has alcoholic hydroxyl groups in the molecule, aromatic groups replaced with phenyl groups or halogen atoms excluding a fluorine atom, and two or more (meth)acryloyl groups, and is represented by the formula (R is H, methyl; X is halogen other than fluorine, phenyl; Y is isopropylidene, -CH2-, SO2, etc.; m1,m2 are 1,2; n1 is 1-6).
摘要:
PROBLEM TO BE SOLVED: To provide a resin material for a laminated flooring tile, and to provide the laminated flooring tile so controlled that no chlorine is emitted when the tile is incinerated, having such plasticity as equal to that of conventional tiles even though no plasticizer is added thereto, having good workability, and excellent in abrasion resistance and heat resistance. SOLUTION: This resin material for the laminated flooring tile contains a polyester-based elastomer. The polyester-based elastomer preferably comprises a polybutylene terephthalate-based elastomer, and more preferably comprises a block copolymer comprising polybutylene terephthalate and an amorphous or lowly crystalline aromatic polyester. A block copolymer which is formed by using a high-melting, highly crystalline aromatic polyester as hard segments and the amorphous or lowly crystalline aromatic polyester as soft segments is exemplified as the polyester-based elastomer. Further, the resin material for the laminated flooring tile may contain polyethylene terephthalate resin.