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2 017 823

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IPC

(21) (22)

Application

4915972/12, 1991-03-04

(22)

Actual filing date

1991-03-04

(45)

Published

1994-08-15

(72)

Inventor

Tsimbalenko A.A.Danilkovich A.G.Zhuravskij V.A.Kurakin E.N.Shloma Eh.N.Shlezinger V.G.

(73)

Holder

Kievskij Tekhnologicheskij Institut Legkoj Promyshlennosti

METHOD OF CHROME TANNING AGENT PREPARING Russian patent published in 1994 - IPC

Abstract RU 2017823 C1

FIELD: chemical technology. SUBSTANCE: chrome (6+) compounds are reduced at the first stage with sulfur acid waste of the following composition, wt. _%: sulfuric acid 26-48; organic impurities 0.4-1.0, and water - the rest; at the second stage - with sulfite waste of the following composition, wt. -% : sodium bisulfite 10-20; sodium sulfite 5-15, and water - the rest, and with slime sulfur containing, wt.-%: sulfur 37-65; inorganic and organic impurities 5-10, and water - the rest. EFFECT: improved method of agent making. 1 tbl

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RU 2 017 823 C1

Authors

Tsimbalenko A.A.

Danilkovich A.G.

Zhuravskij V.A.

Kurakin E.N.

Shloma Eh.N.

Shlezinger V.G.

Dates

1994-08-15—Published

1991-03-04—Filed