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2 203 981

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IPC

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Application

2001121280/02, 2001-07-27

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Start date

2001-07-27

(22)

Actual filing date

2001-07-27

(45)

Published

2003-05-10

(72)

Inventor

Kravtsov E.E.Svetasheva R.R.Sham'Janova D.A.Starkova N.N.Kaliev S.G.Kondratenko T.S.

(73)

Holder

Astrakhanskij Gosudarstvennyj Tekhnicheskij Universitet

CORROSION INHIBITOR OF METALS IN SULFURIC, HYDROCHLORIC AND ORTHOPHOSPHOROUS ACIDS Russian patent published in 2003 - IPC

Abstract RU 2203981 C2

FIELD: corrosion protection of metals; pickling of metals in acids and acid cleaning of equipment. SUBSTANCE: proposed corrosion inhibitor contains the following components, mass-%: 4-trifluoromethyl-2.6- dinitro-3-amino-N, N-diethyl aniline , 9.4-11.4; acetyl acetone-(6- bromopyrimidyl-5)-sulfanilamide, 14.1-17.4; sodium dimethyl aminoazobenzene sulfonate,20.0- 34.3 and urotropin, 37.1-56.5. Proposed inhibitor reliably protects steel, titanium and indium, reducing absorption of hydrogen by steel. EFFECT: enhanced efficiency of corrosion protection. 2 tbl, 3 ex

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RU 2 203 981 C2

Authors

Kravtsov E.E.

Svetasheva R.R.

Sham'Janova D.A.

Starkova N.N.

Kaliev S.G.

Kondratenko T.S.

Dates

2003-05-10—Published

2001-07-27—Filed

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