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(19)

(11)

2 085 592

(13)

(51)

IPC

(21) (22)

Application

95119355/12, 1995-11-16

(22)

Actual filing date

1995-11-16

(45)

Published

1997-07-27

(72)

Inventor

Chursin V.I.

(73)

Holder

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

PROCESS FOR PREPARING SYNTHETIC TANNING AGENT Russian patent published in 1997 - IPC

Abstract RU 2085592 C1

FIELD: manufacture of leathers of different purpose. SUBSTANCE: amino compounds, acid collagen hydrolysate and formaldehyde. Process is carried out at temperatures of 18-23 C, for 1 or 2 hours, the ratio of components of the reaction mixture (wt%) being as follow: 20-30 amino compound: 40-60 acid collagen hydrolysate ; 20-30 formaldehyde. EFFECT: more efficient preparation process. 3 tbl

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RU 2 085 592 C1

Authors

Chursin V.I.

Dates

1997-07-27—Published

1995-11-16—Filed