Method for preparing dicyanoalkane and bis(aminomethyl) alkane
AssigneeMitsubishi Gas Chemical Company, Inc.
InventorsNoriyuki Shiomi, Emi Nakano, Akifumi Iida
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Abstract
A method for preparing a dicyanoalkane may omit a filtration for a catalyst after a cyanation reaction can by carrying out the cyanation reaction in a state in which precipitation of a metal catalyst is suppressed. A method for preparing a dicyanoalkane may involve cyanating one or more aliphatic dicarboxylic acids and/or salt(s) thereof with an ammonia source in the presence of a predetermined compound and a catalyst, wherein, in the cyanation, the amount of the predetermined compound is maintained at a predetermined amount or more with respect to the catalyst.
Claims20
A method for producing a dicyanoalkane, comprising:
- cyanating one or more aliphatic dicarboxylic acids and/or salts thereof with an ammonia source in the presence of a metal oxide and/or a metal salt and an amide compound comprising an amido alkane carboxylic acid, an alkane diamide, a cyanoalkane carboxamide, and/or derivative of any of these in which a hydrogen of the amide NH2 is substituted with another heteroatom
- wherein the alkane of the amide and/or derivative is substituted or unsubstituted,
- wherein, in the cyanating, an amount of the amide compound and/or derivative is maintained at 0.010 times equivalent or more to a total amount of the metal oxide and the metal salt after an amount of the amide compound and/or derivative becomes 0.010 times equivalent or more relative to a total amount of the metal oxide and the metal salt after starting the cyanating, and
- wherein the amount of the amide compound and/or derivative is quantified during the cyanating.
A method for producing a dicyanoalkane, comprising:
- cyanating one or more aliphatic dicarboxylic acids and/or salts thereof with an ammonia source in the presence of a metal oxide and/or a metal salt and an amide compound comprising an amido alkane carboxylic acid, an alkane diamide, a cyanoalkane carboxamide, and/or derivative of any of these in which a hydrogen of the amide NH2 is substituted with another heteroatom
- wherein the alkane of the amide and/or derivative is substituted or unsubstituted, and
- wherein, in the cyanating, an amount of the amide compound and/or derivative is maintained at 0.010 times equivalent or more to a total amount of the metal oxide and the metal salt after an amount of the amide compound and/or derivative becomes 0.010 times equivalent or more relative to a total amount of the metal oxide and the metal salt after starting the cyanating.
Dependencies are inferred from the claim text.