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2 031 957

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C1

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IPC

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Application

93019276/12, 1993-04-13

(22)

Actual filing date

1993-04-13

(45)

Published

1995-03-27

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Inventor

Kuznetsov A.G.Zhuzhgov A.D.Kuznetsova L.A.Soloshenko A.A.Kravchenko G.A.Popov B.A.Volkomorov A.I.Gorjajnov V.Eh.Gorjajnova L.V.Valetdinov R.F.Studenikin S.I.Kozyreva N.S.Luzakova S.V.Gorbatov S.V.Makarov-Zemljanskij Ja.Ja.Men'Shikov B.I.

(73)

Holder

Nauchno-Proizvodstvennoe Ob"Edinenie Nauchno-Issledovatel'Skij Institut Kozhevenno-Obuvnoj Promyshlennosti"

METHOD OF LEATHER TANNING Russian patent published in 1995 - IPC

Abstract RU 2031957 C1

FIELD: leather tanning. SUBSTANCE: pickled depilated hide after preliminary chrome tanning is tanned with composition containing, wt.-%: chrome tanning agent 23-35; neutralizing agents 30-40; waste in adipic acid production 3-33; polymethylenenaphthalene sodium sulfonate 2-16; lignosulfonate sodium 2-16. Firstly tanning is carried out at 20-25 C at composition consumption 1.0-1.5% of hide mass for 1-2 h, and then at 30-35 C at composition consumption 2.0-3.5% of hide mass for 4-6 h. EFFECT: improved method of leather tanning. 1 tbl

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RU 2 031 957 C1

Authors

Kuznetsov A.G.

Zhuzhgov A.D.

Kuznetsova L.A.

Soloshenko A.A.

Kravchenko G.A.

Popov B.A.

Volkomorov A.I.

Gorjajnov V.Eh.

Gorjajnova L.V.

Valetdinov R.F.

Studenikin S.I.

Kozyreva N.S.

Luzakova S.V.

Gorbatov S.V.

Makarov-Zemljanskij Ja.Ja.

Men'Shikov B.I.

Dates

1995-03-27—Published

1993-04-13—Filed

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