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2 170 288

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IPC

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Application

99118031/02, 1999-08-18

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Start date

1999-08-18

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Actual filing date

1999-08-18

(45)

Published

2001-07-10

(72)

Inventor

Kravtsov E.E.Tarasova A.V.Starkova N.N.Gorbachev S.A.Maljavin S.N.Kondratenko T.S.

(73)

Holder

Astrakhanskij Gosudarstvennyj Tekhnicheskij Universitet

METAL CORROSION INHIBITOR IN SULFURIC, HYDROCHLORIC ACID ORTHOPHOSPHORIC ACIDS Russian patent published in 2001 - IPC

Abstract RU 2170288 C2

FIELD: protection of metals from acid corrosion by using inhibitors of metals in acids and acid cleaning of equipment. SUBSTANCE: metal corrosion inhibitor in sulfuric, hydrochloric and orthophosphoric acids comprises, wt %: acetyl acetone-O- aminophenol, 18.2-29.7; 2,4-dinitrophenyl thiocyanate, 22,2-24.3; and urotropin, 45.9-59.1. Use of inhibitor makes it possible to increase degree of protection of steel titanium and zinc corrosion and also to reduce hydrogen absorption steel of steel. EFFECT: improved properties of the metal corrosion inhibitor. 3 ex, 2 tbl

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RU 2 170 288 C2

Authors

Kravtsov E.E.

Tarasova A.V.

Starkova N.N.

Gorbachev S.A.

Maljavin S.N.

Kondratenko T.S.

Dates

2001-07-10—Published

1999-08-18—Filed

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