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2 247 073

(13)

(51)

IPC

(21) (22)

Application

2003104368/15, 2003-02-13

(24)

Start date

2003-02-13

(22)

Actual filing date

2003-02-13

(45)

Published

2005-02-27

(72)

Inventor

Afonin E.G.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchno-Issledovatel'Skij Institut Telemekhanicheskikh Ustrojstv"

METHOD FOR PRODUCTION OF AMMONIUM TETRACHLOROCUPRATE(II) DIHYDRATE Russian patent published in 2005 - IPC

Abstract RU 2247073 C2

FIELD: chemical technology.

SUBSTANCE: ammonium tetrachlorocuprate(ii) dihydrate is obtained by crystallization from aqueous solution with pH 0.0-5.0, produced by addition of 15-30 mass % ammonia solution or 15-40 mass % hydrochloric acid solution to spent solution from printing plate etching, containing copper(II) chloride, ammonium salt, and hydrochloric acid or ammonia.

EFFECT: method of reduced cost; utilization of toxic waste from radio and electronic industry.

4 cl, 4 ex

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RU 2 247 073 C2

Authors

Afonin E.G.

Dates

2005-02-27—Published

2003-02-13—Filed