Latest Inventions  Technologies of a mild industry METHOD OF LEATHER TREATMENT
METHOD OF
LEATHER TREATMENT
FIELD: leather industry.
SUBSTANCE: invention relates to method of
treatment of leather of different designation. Intermediate product is
neutralized with formate and sodium hydrocarbonate followed by additional
tanning with product of condensation of naphthalene sulfoacid with formaldehyde
and lignosulfonate taken in the amount 1.7-2.5% of semifinished product mass.
Then staining is carried out in the presence of organic tanning agent taken in
the amount 3-7% of semifinished product mass followed by greasing. Method
ensures to obtain leather with high exploitation properties.
EFFECT: improved method of treatment. 1 tbl, 5 ex
Chursin V.I., L'vova
A.N.
Patent number: 2193601
Publishing date: January 28, 2003
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