摘要:
[PROBLEMS] The present invention provides a method for efficiently producing a corresponding amide compound from a nitrile compound by a reaction using a nitrile hydratase and a method for producing an amide-based polymer excellent in quality from the amide compound. In addition, the present invention provides a method for more efficiently producing an acrylamide with higher quality by a microbial catalyst containing a nitrile hydratase and the like and a method for producing an acrylamide-based polymer, which is excellent in hue, has a good balance between the water solubility and the high molecular weight and is also excellent in quality, by using the acrylamide.
摘要:
A process for producing zinc toluenesulfonate comprising reacting a zinc compound comprising Zn(OH) 2 with toluenesulfonic acid and/or a salt thereof in the presence of an alcohol having 1 to 20 carbon atoms in total at a temperature higher than 60°C.
摘要:
A process for producing high-quality (meth)acrylonitrile efficiently by an action of a microbial catalyst or the like that contains nitrile hydratase is provided. The present invention is directed to a process for producing (meth) acrylamide from (meth) acrylonitrile in an aqueous solution that is put in a reactor and relates to one process for producing (meth) acrylamide that includes the steps of (A) to (C) : (A) adding to the reactor a microorganism or a processed product of the microorganism that contains nitrile hydratase; (B) adding to the reactor an alkali; and (C) adding to the reactor (meth) acrylonitrile, in which an addition line used in the step (A), an addition line used in the step (B), and an addition line used in the step (C) are different from one another, and to another process for producing (meth)acrylamide from (meth)acrylonitrile by an action of the microorganism or processed product of the microorganism that produces nitrile hydratase, in which a mixture of (meth)acrylonitrile and water is added to an aqueous solution that is put in a reactor and contains an alkali and a microorganism or a processed product of the microorganism that produces nitrile hydratase through an addition line of the reactor.
摘要:
A process for producing zinc toluenesulfonate comprising reacting a zinc compound comprising Zn(OH) 2 with toluenesulfonic acid and/or a salt thereof in the presence of an alcohol having 1 to 20 carbon atoms in total at a temperature higher than 60°C.
摘要:
A method for producing trans-bis(aminomethyl)cyclohexane includes a trans-isomerization step in which cis-dicyanocyclohexane is isomerized into trans-dicyanocyclohexane by heating dicyanocyclohexane containing cis-dicyanocyclohexane in the presence of a tar component produced by distillation of dicyanocyclohexane; and an aminomethylation step in which trans-dicyanocyclohexane produced by the trans-isomerization step is allowed to contact with hydrogen to produce trans-bis(aminomethyl)cyclohexane.
摘要:
[PROBLEMS] The present invention provides a method for efficiently producing a corresponding amide compound from a nitrile compound by a reaction using a nitrile hydratase and a method for producing an amide-based polymer excellent in quality from the amide compound. In addition, the present invention provides a method for more efficiently producing an acrylamide with higher quality by a microbial catalyst containing a nitrile hydratase and the like and a method for producing an acrylamide-based polymer, which is excellent in hue, has a good balance between the water solubility and the high molecular weight and is also excellent in quality, by using the acrylamide. [MEANS FOR SOLVING THE PROBLEMS] The method for producing an amide compound of the present invention is characterized in that in a method for producing an amide compound from a nitrile compound in an aqueous medium in the presence of a catalyst having a nitrile hydratase activity, the concentration of benzene in the aqueous medium is 4.0 ppm or less. In addition, the method for producing an amide-based polymer of the present invention is characterized by homopolymerizing the amide compound or by copolymerizing the amide compound and at least unsaturated monomer copolymerizable with the amide compound. Further, the method for producing acrylamide of the present invention is characterized by hydrating acrylonitrile having a concentration of acrolein of 1 ppm or less by a microbial cell containing a nitrile hydratase or a processed product of the microbial cell in an aqueous medium. Furthermore, the method for producing an acrylamide-based polymer of the present invention is characterized by homopolymerizing the acrylamide or by copolymerizing the acrylamide and at least one unsaturated monomer copolymerizable with the acrylamide.
摘要:
1,4-bis(isocyanatomethyl)cyclohexane contains 70 mol% or more and 95 mol% or less of a trans isomer relative to a total amount of a cis isomer and the trans isomer, and 0.1 ppm or more and 300 ppm or less of the compound represented by formula (1) below: