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2 178 810

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(51)

IPC

(21) (22)

Application

2001113972/12, 2001-05-25

(24)

Start date

2001-05-25

(22)

Actual filing date

2001-05-25

(45)

Published

2002-01-27

(72)

Inventor

Chursin V.I.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Tsentral'Nyj Nauchno-Issledovatel'Skij Institut Kozhevenno-Obuvnoj Promyshlennosti

METHOD OF PROCESSING RAWSTOCK Russian patent published in 2002 - IPC

Abstract RU 2178810 C1

FIELD: leather industry. SUBSTANCE: rawstock is treated with aqueous solution of enzyme preparation in presence of 3-8% (based on the weight of rawstock) of urea as dispersing organic compound. Rawstock is then frozen at temperature from -18 C to -45 C and unfrozen at 55- 65 C, after which it is aged during 48 to 72 h. EFFECT: improved quality of leather and reduced pollution of waste waters. 1 tbl, 5 ex

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RU 2 178 810 C1

Authors

Chursin V.I.

Dates

2002-01-27—Published

2001-05-25—Filed