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2 036 972

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(51)

IPC

(21) (22)

Application

92013608/12, 1992-12-16

(22)

Actual filing date

1992-12-16

(45)

Published

1995-06-09

(72)

Inventor

Gorbatov S.V.Jakovlev K.P.Makhmurov A.G.Korneev I.A.

(73)

Holder

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

METHOD FOR PREPARING SPLIT OF FLESH SIDE OF HIDE Russian patent published in 1995 - IPC

Abstract RU 2036972 C1

FIELD: processing of splits. SUBSTANCE: after preliminary washing and softening lower split is treated at 28-30 C by acid and salt, expense of acid being 1.5-2.0 % of split mass. Then tanning with the help of chromium compounds is carried out, expense of said compounds being 0.8-1.2 % of split mass as calculated for chromium oxide. Additional tanning is carried out using mentioned above chromium compounds together with carboxyl-containing polymers, expense of said reagents being 0.3-10 % of plained split as calculated for its dry residue. EFFECT: improves efficiency of the method. 1 tbl

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RU 2 036 972 C1

Authors

Gorbatov S.V.

Jakovlev K.P.

Makhmurov A.G.

Korneev I.A.

Dates

1995-06-09—Published

1992-12-16—Filed