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Machine translation
1. (WO1980000340) PROCESS FOR PURIFYING NAPHTHOQUINONE
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1980/000340    International Application No.:    PCT/JP1979/000210
Publication Date: 06.03.1980 International Filing Date: 09.08.1979
IPC:
C07C 46/10 (2006.01)
Applicants:
Inventors:
Priority Data:
78/97412 11.08.1978 JP
Title (EN) PROCESS FOR PURIFYING NAPHTHOQUINONE
(FR) PROCEDE DE PURIFICATION DE LA NAPHTOQUINONE
Abstract: front page image
(EN)In a process for purifying naphthoquinone obtained by gas phase catalytic oxidation of naphthalene, the improvement which comprises contacting a solution of the naphthoquinone dissolved in a solvent capable of dissolving naphthoquinone and not miscible with water, with an aqueous sodium bicarbonate solution capable of maintaining pH not lower than 7 between ordinary temperature and a temperature of 90 C to thereby extract into the aqueous solution impurities contained in the naphthoquinone.
(FR)Dans un procede de purification de la naphtoquinone obtenue par oxydation catalytique de naphtalene en phase gazeuse, l"amelioration consiste a mettre en contact une solution de naphtoquinone dissoute dans un solvant capable de dissoudre la naphtoquinone et non missible dans l"eau, avec une solution aqueuse de bicarbonate de sodium capable de maintenir le pH a 7 ou au-dessus entre la temperature ambiante et une temperature de 90 C de maniere a extraire dans la solution aqueuse les impuretes contenues dans la naphtoquinone.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)