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2 073 584

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Application

94008315/02, 1994-03-11

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Actual filing date

1994-03-11

(45)

Published

1997-02-20

(72)

Inventor

Pukhovitskaja A.N.Sokolova S.I.Romanov N.M.Polozenko G.N.Kopylov V.M.Kolpakov A.A.Kitaeva L.N.

(73)

Holder

Aktsionernoe Obshchestvo Otkrytogo Tipa Institut Plasticheskikh Mass Im.G.S.Petrova S Opytnym Moskovskim Zavodom Plastmass"

METHOD OF PREPARING COMPLEX HARDENER FOR BINDING AGENTS Russian patent published in 1997 - IPC

Abstract RU 2073584 C1

FIELD: foundry. SUBSTANCE: complex hardener for cores and molds is prepared by blending cupric nitrate, lignosulfonate, and water, wherein, as cupric nitrate, wastes of copper and/or its alloys treated with nitric acid are utilized with 40-65% of cupric nitrate trihydrate. Copper waste content is 20-30 wt % and that of lignosulfonate 25-30 wt %. Hardener may further contain 5-8 wt % of urea. EFFECT: reduced cost due to utilized waste. 2 cl, 2 tbl

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RU 2 073 584 C1

Authors

Pukhovitskaja A.N.

Sokolova S.I.

Romanov N.M.

Polozenko G.N.

Kopylov V.M.

Kolpakov A.A.

Kitaeva L.N.

Dates

1997-02-20—Published

1994-03-11—Filed

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