FIELD: chemistry.
SUBSTANCE: in order to obtain quality collagen dissolution products, rawhide is treated with a solution in form of a lactic acid composition having titratable acidity of 250-300°T, concentration of lactic acid of at least 25-30 g/dm3 and medium active response of not more than 4.0. The process is carried out at temperature of 24±2°C, float ratio=1 and alternating mechanical action. Dissolution has duration of 11-13 days. At the end of dissolution, the samples are almost transparent, loose, swollen pieces of skin which easily break up under slight mechanical action.
EFFECT: improved properties of the product.
3 tbl, 3 ex
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