METHOD FOR TREATMENT OF FUR HIDES Russian patent published in 2005 - IPC

FIELD: light industry.

SUBSTANCE: invention relates to a method for treatment of fur hides before oxidative whitening of hair cover. Additional tanning and pickling are carried out separately at pH value 6.5-7.0. The preparation based on low-molecular alcohol polyacetals - "Dubitel M" is used as a tanning agent. Tanning agent is added for two steps wherein at the second step tanning agent is added in twice dose as compared at the first step. Additional tanning is carried out in the required ratio of components of an aqueous composition comprising sodium chloride, surface-active substance, preparation based on low-molecular alcohol polyacetals. Pickling is carried out with smearing on hair cover in the consumption 2-4 ml per 1 dm² with the composition comprising iron sulfate, citric acid, surface-active substance and gelatin as a protecting additive. After pickling lying is carried out for 12-16 h. Method provides improved the quality of whitened fur hides.

EFFECT: improved method for treatment.

2 cl, 2 tbl