FIELD: biodegradable polymers, medicine.
SUBSTANCE: claimed product is obtained by polymerization of alpha-angelicalactone in presence of sodium butylate at 18-25°C for 220-315 hours. Further product is purified with diethyl ether, volatile matters are removed by heating up to 80°C for 4 h under pressure of 14 Hg mm and product is exposed with gamma- or ultraviolet irradiation. Obtained product is characterized with two kinds of interunit bonds, namely carbon-carbon polyolefin bonds and carbon-carbon polyester bonds and contains polyester bonds in amount of 0.01-0.99 as calculated to monomer unit and cross-links between chains in amount of 0-1,94 as calculated to monomer unit. Polymers of present invention are useful in medicine in production of pharmaceutical preparations, surgery filaments, packing materials, etc.
EFFECT: polymer with controlled biodegradation.
7 ex
| Title | Year | Author | Number |
|---|---|---|---|
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