METHOD OF TREATING HAIR COVER OF SHEEPSKIN Russian patent published in 2016 - IPC C14C11/00 C14B1/54 

FIELD: chemistry.

SUBSTANCE: method of treating hair cover of sheepskin includes treating a semi-product with a plasticising composition, cutting hair and treatment twice with a fixing agent containing formalin with intermediate smoothing, wherein as the plasticising composition a collagen-containing dispersion in an organic acid with total consumption thereof of 0.26-0.15 g/m² is used; treatment of the sheepskin with the plasticising composition is carried out twice with intermediate ageing at room temperature, and as the fixing agent formalin (40%) with concentration of 70 ml/l with total consumption of 0.2-2.0 ml/m², at smoothing temperature of 135-140°C is used. The disclosed treatment provides high quality of hair cover with an optimum moderate mode of processing factors.

EFFECT: set of treatment parameters significantly reduces consumption of harmful chemicals and treatment temperature, thereby improving the quality of the hair cover.

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