LACTIC ACID-BASED RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To obtain a resin composition that has biodegradability and excellent heat resistance, especially elastic properties in a high-temperature environment. SOLUTION: The resin composition is obtained by mixing 100 parts by mass of a lactic acid-based resin with 10-100 parts by mass of a rosin derivative. The rosin derivative has 100°C-170°C softening temperature. A polymerized rosin ester or a rosin-modified phenol resin is used as the rosin derivative. The resin molding composed of the resin composition has≥10MPa storage elastic modulus at 80°C. COPYRIGHT: (C)2006,JPO&NCIPI