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2 190 696

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C1

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IPC

(21) (22)

Application

2001101066/02, 2001-01-11

(24)

Start date

2001-01-11

(22)

Actual filing date

2001-01-11

(45)

Published

2002-10-10

(72)

Inventor

Kravtsov E.E.Davydova Z.G.Dutljakova Ju.S.Isaeva Z.Z.Starkova N.N.Kaliev S.G.Kondratenko T.S.

(73)

Holder

Astrakhanskij Gosudarstvennyj Tekhnicheskij Universitet

INHIBITOR OF METAL CORROSION IN SULFURIC, HYDROCHLORIC, AND SULFAMIC ACIDS Russian patent published in 2002 - IPC

Abstract RU 2190696 C1

FIELD: corrosion protection. SUBSTANCE: invention can be used for etching metals in acids and acidic cleaning of equipment in power engineering, food industry, and other areas. Corrosion inhibitor contains, %: product of condensation of amine with aldehyde, in particular, alpha-hydroxynaphthal-p-iodoaniline, 15.6-22.7; beta-ethylxanthogenylethyl-N-m-tolyl carbamate, 15.2-25.0; 2,6- dimethyl-N-heptylquinolinium iodide, 18.2-25.0; and urotropin, 33.3-43.9. EFFECT: increased zinc and chromium protection efficiency and reduced hydrogen pickup by steel. 2 tbl

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RU 2 190 696 C1

Authors

Kravtsov E.E.

Davydova Z.G.

Dutljakova Ju.S.

Isaeva Z.Z.

Starkova N.N.

Kaliev S.G.

Kondratenko T.S.

Dates

2002-10-10—Published

2001-01-11—Filed

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