METHOD OF PRODUCING WATER SOLUBLE AZO DYES Russian patent published in 1994 - IPC

Abstract RU 2016025 C1

FIELD: production of dyes. SUBSTANCE: water soluble azo dyes are prepared by diazotizing and azocoupling. The process is carried out in the medium of magnetic reaction mass and/or water prepared by passing through magnetic field at rate 0.3-4.6 m/s within 0.04-16 s, field intensity being 30-260 kA/m. EFFECT: increases yield of desired product, increases efficiency of the method. 5 tbl

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RU 2 016 025 C1

Authors

Glushchenko S.N.

Shirokij E.I.

Savchishin S.V.

Shkil' O.A.

Slezko G.F.

Dates

1994-07-15—Published

1992-05-26—Filed