ALPHA-PICOLINE-WATER AZEOTROPE MIXTURE SEPARATION METHOD Russian patent published in 2002 - IPC

Abstract RU 2188058 C1

FIELD: industrial organic synthesis. SUBSTANCE: invention relates to separation of alpha- picoline-water azeotrope mixture formed in solvent regeneration stage in poly- p-phenylene-terephthalamide and consists in that solid sodium hydroxide is added to mixture containing alpha-picoline and water un amounts 0.50-0.66 g per 1 g water, after which resulting suspension is separated. EFFECT: simplified equipment, reduced power consumption, and enabled wasteless production of poly- p-phenylene-terephthalamide. 3 ex

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RU 2 188 058 C1

Authors

Ivanov V.M.

Majatskij V.A.

Dates

2002-08-27—Published

2001-04-17—Filed