Method for purifying .alpha.-amino-.epsilon.-caprolactam

Details Method for purifying .alpha.-amino-.epsilon.-caprolactam Method for purifying .alpha.-amino-.epsilon.-caprolactam

1977-10-25

1979-02-20

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07D22310, C07D22312

Patent

active

041406869

ABSTRACT:
Purified .alpha.-amino-.epsilon.-caprolactam free from not only visible ray-absorbing substances but ultra-violet ray-absorbing substances, such as, tetrahydrophenazine and octahydrophenazine, and volatile basic substances such as, ammonium salts, is obtained by dissolving a crude .alpha.-amino-.epsilon.-caprolactam in a solvent consisting of at least one alkyl ester of saturated aliphatic acid of the formula:

REFERENCES:
patent: 3879382 (1975-04-01), Watase et al.
patent: 3898213 (1975-08-01), Koff

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