METHOD OF PRODUCING BIODEGRADABLE COMPOSITIONS Russian patent published in 2020 - IPC C08L101/16 C08L77/00 C08L3/02 C08K5/53 C08K3/16 

FIELD: chemistry; food industry.

SUBSTANCE: invention relates to chemical and food industry, in particular to production of biodegradable plastics, and can be used for production of molded or film products for various purposes, including food. Method of producing biodegradable compositions involves treating granules of a hydrophobic polymer, in form of polyamide PA6, a liquid plasticiser – propylene glycol or glycerine, then gradual introduction of calcium chloride anhydrous and introduction of biodegradable filler, which is represented by corn starch. Mixture is thoroughly mixed and extruded at temperature 180–185 °C.

EFFECT: technical result consists in reduction of processing temperature of biodegradable composition, high water absorption and improved biodegradability of polymer.

1 cl, 1 tbl, 1 dwg, 4 ex