COMPOSITION FOR ANTICORROSIVE TREATMENT OF FERROUS METALS' SURFACES Russian patent published in 2002 - IPC

Abstract RU 2190038 C2

FIELD: metalworking. SUBSTANCE: water-based composition contains, wt %: phosphoric acid 25-45, organophosphorus complexones 0.5-15, zinc (calculated as zinc oxide) 1-15, copper (calculated as cupric oxide) 0.1-3, and hydroquinone 0.01- 5. EFFECT: enhanced anticorrosive effect and reduced toxicity. 1 tbl, 5 ex _

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RU 2 190 038 C2

Authors

Levichev A.N.

Uskach Ja.L.

Dates

2002-09-27—Published

1999-12-20—Filed