Process for the reduction of heavy metal ions in excess from aqu

Details Process for the reduction of heavy metal ions in excess from aqu Process for the reduction of heavy metal ions in excess from aqu

1988-08-30

1990-10-16

Higel, Floyd D.

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

Organic compounds

Azo

534617, 534622, 534623, 534624, 534625, 534626, 534627, 534628, 534629, 534887, 540126, 540133, C09B 4500, C09B 6700, C09B 62503, C09B 6204

Patent

active

049636600

ABSTRACT:
Free radical heavy metal ions in water-soluble heavy metal complex dyestuffs are removed from the synthesis solution of the heavy metal complex dyestuff by means of a compound or several of the compounds mentioned below:

REFERENCES:
patent: 4180502 (1979-12-01), Kaufmann
patent: 4400317 (1983-08-01), Corso
patent: 4607098 (1986-08-01), Schwaiger

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