PROCESS OF MANUFACTURING MATERIAL FROM CELLULOSE-FIBRON MIX Russian patent published in 2008 - IPC D01F2/02 D01F4/02 C08L1/02 

FIELD: cellulose derivatives.

SUBSTANCE: invention relates to technology of manufacturing fibers and films from mixtures of natural polymers: cellulose and fibroin, which can be used, for instance, in fabrication of linen assortment articles. Process comprises preparing separately cellulose and fibroin solutions in organic solvent followed by regeneration and drying. Wood cellulose having degree of polymerization 200-400 is used. Both polymers are dissolved to concentration 5-15 wt % in ionic solvent, which is composed of following cation: , wherein R¹ is ethyl or butyl, and chloride or acetate anion. Dissolution is accompanied by turbulent stirring at 60-90°C until dissolution is completed. Details: cellulose/fibroin ratio in their mixture is between 95:5 and 60:40; rotation speed of stirrer is 600 to 1200 rpm; stirrer blades reciprocate in vertical direction at amplitude 200 to 2000 mm and frequency 0.125 s^-1; and regeneration of polymer is effected via precipitation into water or water-organic bath.

EFFECT: enhanced bacteriostatic properties of material and increased its strength in wet state when operated.

2 cl, 1 dwg, 3 tbl, 18 ex