Purification of 1,3-bis(aminomethyl)cyclohexane by distillation

Details Purification of 1,3-bis(aminomethyl)cyclohexane by distillation Purification of 1,3-bis(aminomethyl)cyclohexane by distillation

2006-01-10

2006-01-10

Barts, Samuel (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C564S449000, C564S451000

Reexamination Certificate

active

06984758

ABSTRACT:
A crude liquid containing 1,3-bis(aminomethyl)cyclohexane and a high-boiling component having a boiling point higher than that of 1,3-bis(aminomethyl)cyclohexane is distilled. By controlling the distillation conditions, the high-boiling component is prevented from entering into a distilled 1,3-bis(aminomethyl)cyclohexane and the content of a low-boiling component in the distilled 1,3-bis(aminomethyl)cyclohexane is minimized.

REFERENCES:
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patent: 5741928 (1998-04-01), Kobayashi et al.
patent: 25 51 055 (1976-05-01), None
patent: 49-042645 (1974-04-01), None
European Search Report, for Application No. 05101990.9-2103 PCT, dated Aug. 3, 2005.

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