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:
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:
The invention provides a biocatalytic process for oxidation of organic compounds with the aid of an alkL gene product, and microorganisms used in this process.
Abstract:
Procedimiento para separar un compuesto orgánico de una solución acuosa, que comprende las etapas a) proporcionar la solución acuosa que contiene el compuesto orgánico, y una solución orgánica hidrofóbica, comprendiendo esta última un intercambiador de cationes hidrofóbico líquido, b) poner en contacto la solución acuosa y la solución orgánica hidrofóbica, y c) separar la solución orgánica hidrofóbica de la solución acuosa, en donde en el caso del intercambiador de cationes hidrofóbico líquido se trata de un ácido alcanoico saturado con al menos un sustituyente alquilo que presenta al menos 12 átomos de carbono, tratándose el compuesto orgánico de un compuesto de la fórmula NR2R3H+- A -NR4R5H+ (II), en donde A es un grupo alquileno con al menos tres, preferiblemente al menos seis, de manera particularmente preferida ocho átomos de carbono, que preferiblemente no está sustituido y es de cadena lineal, y en donde R2, R3, R4 y R5, en cada caso e independientemente uno de otro, se eligen del grupo que comprende hidrógeno, metilo, etilo y propilo; en donde el valor del pH en la solución acuosa en la etapa b) asciende a 6 a 8, preferiblemente a 6,2 a 7,2.
Abstract:
Whole cell catalyst expressing a recombinant alpha -dioxygenase or a combination of a recombinant fatty acid reductase and a recombinant phosphopantetheinyl transferase phosphopantetheinylating the fatty acid reductase, and recombinant transaminase, is claimed. Independent claims are also included for: (1) reacting a carboxylic acid, a dicarboxylic acid or their monoester to an amine or diamine, comprising (a) providing the carboxylic acid, dicarboxylic acid or their monoester, and contacting a carboxylic acid with an alkane hydroxylase and/or alcohol dehydrogenase, (b) contacting the carboxylic acid, dicarboxylic acid or their monoester with a phosphopantetheinylated fatty acid reductase or an alpha -dioxygenase to obtain an aldehyde product, and (c) contacting the aldehyde product with transaminase; and (2) a reaction mixture comprising the above whole cell catalyst in an aqueous solution, and the carboxylic acid, dicarboxylic acid or their monoester.