METHOD FOR MANUFACTURING BIS(AMINOMETHYL)CYCLOHEXANE
A method for producing bis(aminomethyl)cyclohexane, including hydrogenating xylylenediamine in the presence of a solvent and a catalyst, wherein the catalyst with decreased activity due to use is treated in a catalyst regeneration treatment step including the following step (1) and step (2), and the...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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Zusammenfassung: | A method for producing bis(aminomethyl)cyclohexane, including hydrogenating xylylenediamine in the presence of a solvent and a catalyst, wherein the catalyst with decreased activity due to use is treated in a catalyst regeneration treatment step including the following step (1) and step (2), and then reused in a reaction system: step (1): maintaining an amount of bis(aminomethyl)cyclohexane in a liquid before the step (2) at 20% by mass or less, step (2): heating the catalyst to 100 to 500°C and bringing the catalyst into contact with a hydrogen-containing gas. |
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