| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject composition, excellent in flexibility and biodegradability and usable in applications such as containers, etc., by mixing an aliphatic polyester having a specific melt viscosity with a specified amount of biodegradable organic fine particles. SOLUTION: This biodegradable resin composition is obtained by mixing and reacting (A) 100 pts.wt. aliphatic polyester having 1,000-150,000P melt viscosity at 200 deg.C with (B) 10-260 pts.wt. biodegradable organic fine particles and (C) 0.5-10 pts.wt. polyfunctional isocyanate compound. One or more of starches, wood flour, etc., are preferably used as the component B; however, the starches having a high biodegradation rate are more preferably used. Diisocyanates, trisocyanates, etc., are preferably used as the component C; however, one or more of the diisocyanates are more preferably used. Since the resultant composition has excellent flexibility, rigidity, biodegradability, etc., and is relatively inexpensive, a wide range of used such as films, containers or fibers can thereby be expected. |
