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2 146 715

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(51)

IPC

(21) (22)

Application

99112282/12, 1999-06-10

(24)

Start date

1999-06-10

(22)

Actual filing date

1999-06-10

(45)

Published

2000-03-20

(72)

Inventor

Chursin V.I.Shapkarina N.P.Lychnikov D.S.Zolotova S.V.

(73)

Holder

Tsentral'Nyj Nauchno-Issledovatel'Skij Institut Kozhevenno-Obuvnoj Promyshlennosti

METHOD OF LEATHER TANNING Russian patent published in 2000 - IPC

Abstract RU 2146715 C1

FIELD: leather industry; applicable in production of leathers of vegetable tannage. SUBSTANCE: hide placed into holder is treated with solution of vegetable extract for 12-16 h with periodic exposure to ultrasonic vibrations with frequency of 16-50 kHz and field intensity of 0.5-1.0 W/sq.cm. Treatment is carried out under conditions of sounding for 1.5-2.0 h and 1.5-2.0 h in silence. EFFECT: improved quality of leather; extended process potentialities. 3 tbl

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RU 2 146 715 C1

Authors

Chursin V.I.

Shapkarina N.P.

Lychnikov D.S.

Zolotova S.V.

Dates

2000-03-20—Published

1999-06-10—Filed