METHOD OF PRODUCING BIODEGRADABLE COMPOSITIONS CONTAINING STARCH DERIVATIVES BASED ON POLYSACCHARIDE ETHERS AND ESTERS Russian patent published in 2012 - IPC C08L23/06 C08L3/04 C08K5/09 C08L101/16 

FIELD: chemistry.

SUBSTANCE: method of producing biodegradable compositions involves treating granules of a hydrophobic polymer with a finishing agent - oleic acid, which is added in batches and adding filler to the hydrophobic polymer, said filler being modified starch THERMTEX, the molecule of which simultaneously contains fragments of ether and ester groups based on phosphoric acid with a different degree of protection. The mixture is thoroughly mixed and extruded at temperature 190-200°C. The invention also relates to a method of producing biodegradable compositions, involving mixing a powdered hydrophobic polymer with filler in form of modified starch THERMTEX, the molecule of which simultaneously contains fragments of ether and ester groups based on phosphoric acid with a different degree of protection. The mixture is thoroughly mixed and extruded at temperature 190-200°C.

EFFECT: improved rheological properties biodegradable polymers, heat-stabilising properties of the obtained product, ensuring good biodegradability of the polymer and obtaining a product with a decorative lustrous surface.

2 cl, 1 tbl, 2 ex