Abstract:
PROBLEM TO BE SOLVED: To develop a method for after-treating laurinlactam, satisfying the following boundary conditions: the early period separation of the laurinlactam in the after-treating process, the reduction of thermal load of a product by the reduction of the number of indispensable thermal separation processes, the reduction of thermal load by the lowering of indispensable process temperatures, the recovery of all of useful materials contained in a substance flow, and the separation and discharge of components different from an objective product/starting materials and solvent. SOLUTION: The method for after-treating the substance flow containing the laurinlactam for recovering the all of the contained components includes at first cooling the substance flow yielded from synthesis and containing the laurinlactam and further components, exceeding only the soluble limit of the laurinlactam by selective solution cooling and crystallization, also appropriately crystallizing the laurinlactam, separating from mother liquor in the back-connected solid-liquid separation and then feeding the mother liquor to a multiple-stepped distillation sequence. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method for ozonolysis of an unsaturated fatty acid and a derivative thereof, and to provide the use of catalase for removing reactive oxygen species from a reaction mixture including the ozonolysis product of the unsaturated fatty acid.SOLUTION: The method for ozonolysis includes (a) a step to conduct ozonolysis of a fatty acid or a derivative thereof in an organic phase including an organic solvent, and (b) a step to bring the organic phase into contact with an aqueous phase including catalase and preferably a buffer solution, wherein the fatty acid or the derivative thereof has a ≥8C linear chain.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing α,ω-dicarboxylic acids and their esters.SOLUTION: The method includes: (a) a process of ozonolysing unsaturated fatty acids or unsaturated acid derivatives, and (b) a process of oxidizing the reaction mixture obtained from the ozonolysis to the α,ω-dicarboxylic acids or their esters. In the process (b), a strong acid having ≤0 pKa value measured at 25°C is added as a catalyst, and also the method is performed by using a solvent.
Abstract:
PROBLEM TO BE SOLVED: To provide a method having one process for preparing a primary diamine having a linear main chain.SOLUTION: In the method for preparing a primary diamine having a linear main chain, the primary diamine is prepared by reacting the corresponding diol with ammonia and/or an ammonia-liberating compound or a mixture of them in a liquid or supercritical phase in the presence of a homogeneous ruthenium catalyst.
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing cyclododecatriene by trimerizing butadiene in the presence of a catalytic system and a solvent by a continuous or discontinuous method. SOLUTION: The method for producing the cyclododecatriene is carried out as follows. A compound containing at least one kind of elements of main group 5 in the elemental periodic table is added to the catalytic system, and the solvent is allowed to contain 10-1,000 ppm polar component of general formula HO-R before addition of the catalytic components. The reaction temperature is ≤140°C when a nickel-containing catalytic system is used, and ≤80°C when a titanium-containing catalytic system is used. The obtained crude cyclododecatriene can be isolated by distillation, and cyclooctadiene formed as a by-product can also be isolated from the crude product. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a use of a cyclic alkane having 8-20 carbon atoms in the ring, as a settling accelerator in epoxydation of a cyclic, at least monounsaturated alkene having 8-20 carbon atoms in the ring. SOLUTION: The epoxidation is carried out by using a saturated compound as a cyclic alkane which corresponds to the alkene used, in the presence of an oxidant and a catalyst system comprising at least one metal of Group 4, 5 and 6 of the Periodic Table of the Elements, phosphoric acid and a phase transfer catalyst. The settling time is shortened according to the amount of the added alkane. COPYRIGHT: (C)2004,JPO
Abstract:
PROBLEM TO BE SOLVED: To provide a method for a post treatment of a reaction mixture formed by performing an ammoxime formation of a ketone with hydrogen peroxide and ammonia by using a catalyst containing titanium in a homogeneous solution, including the separation of the catalyst, selective separation of an oxime formed in the ammoxime formation, sending out of the reaction water and return of a solvent as partial processes. SOLUTION: This post treating process has at least one membrane separation process. It is possible to perform the reaction even if the reaction ratio of the ketone is insufficient or even in the presence of a dissolved salt. COPYRIGHT: (C)2003,JPO
Abstract:
A molding compound, containing at least 30% by weight of a copolyamide, which is derived from the following monomers: a) 50 to 95 mole percent of the combination of a diamine, selected from the group consisting of 1,9-nonane diamine, 1,10-decane diamine, 1,11-undecane diamine and 1,12-dodecane diamine, and terephthalic acid, and b) 5 to 50 mole percent of the combination of a diamine, selected from the group consisting of 2,2,4-trimethylhexamethylene diamine, 2,4,4-trimethylhexamethylene diamine, and mixtures thereof, and terephthalic acid. The copolyamide is crystalline and has low water absorption.
Abstract:
PROBLEM TO BE SOLVED: To provide a gas phase method for performing a selective heteogeneous system hydrogenation from cyclododecatriene and/or cyclododecadiene (as starting materials) to cyclododecene, using a continuous method, excellent in CDEN selectivity at ≥99.5 % conversion rate (CDT+CDD), realizing the reaction in an industrial scale, without having the inferiority of conventional methods, and using an easily usable catalyst. SOLUTION: This method for producing cyclododecene (CDEN) by the selective gas phase hydrogenation of at least one kind of starting material selected from cyclododecatriene (CDT), cycclododecadiene (CDD) and a mixture of them in a solid bed reactor is characterized by having >100 Bodenstein number related to the processes in the solid bed reactor. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To develop a continuous aftertreatment method for oximization of a ketone such as a cycloalkane containing advantageously 8-20 carbon atoms, with which a catalyst is separated after the reaction, an oxime is separated from a reaction mixture, reaction water is separated from a solvent, a remaining alcohol is returned and in the operation, a product does not precipitate as a solid during the aftertreatment process. SOLUTION: A three component solvent system which comprises firstly one or a plurality of organic liquids perfectly or excellently miscible with water, for example, particularly an alcohol or an organic solvent partially miscible with water and an alcohol and has a boiling point higher than those of water and the alcohol is used. The miscibility gap of the three component solvent system by fluctuation of water content is utilized for extraction. COPYRIGHT: (C)2003,JPO