BIODEGRADABLE COPOLYMER AND PRODUCT FROM PLASTIC INCLUDING BIODEGRADABLE COPOLYMER Russian patent published in 1999 - IPC

FIELD: polymer materials. SUBSTANCE: product is distinguished by that biodegradable copolymer includes at least two statistically repeating monomer links, the first link having formula I (see description) wherein R¹ is hydrogen, methyl, or ethyl and n=1 or 2 and the second one having formula II wherein R² is C₄-C₁₉-alkyl or alkenyl, and where at least 50% of statistically repeating monomer links have structure of the first link. Copolymer, surprisingly, proved to be easier to process into plastic products, especially into films as compared with known copolymers. EFFECT: improved working characteristics. 13 cl, 25 ex