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2 122 522

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C1

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IPC

(21) (22)

Application

97103392/25, 1997-03-04

(22)

Actual filing date

1997-03-04

(45)

Published

1998-11-27

(72)

Inventor

Groshev G.L.Kuznetsova N.S.Zemljankin A.P.Krasnov I.M.Fomin S.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa

METHOD OF PREPARING ALUMINIUM HYDROXYCHLORIDE Russian patent published in 1998 - IPC

Abstract RU 2122522 C1

FIELD: chemical industry. SUBSTANCE: aluminium hydroxychloride is prepared by reacting aluminium hydroxide with hydrogen chloride in the presence of sulfuric acid. Gaseous hydrogen chloride is fed till 30-50% aluminium hydroxide are dissolved from charged amount, and reaction mixture is then heated to boiling temperature at atmospheric pressure. Sulfuric acid is added after gaseous hydrogen chloride is not supplied any longer. Original suspension of aluminium hydroxic is prepared in hydrochloric acid having concentration of 0.1-20 wt %. The present invention makes it possible to simplify process. EFFECT: more efficient preparation method. 3 cl, 2 ex

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RU 2 122 522 C1

Authors

Groshev G.L.

Kuznetsova N.S.

Zemljankin A.P.

Krasnov I.M.

Fomin S.N.

Dates

1998-11-27—Published

1997-03-04—Filed

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