BETA-PINENE POLYMER AND PROCESS FOR PRODUCTION THEREOF

摘要

To provide a ²-pinene polymer excellent in heat resistance while having thermoplasticity, and further also having excellent strength, without impairing the inherent characteristics of small specific gravity and excellent transparency. A desired ²-pinene polymer having a weight average molecular weight of 90,000 to 1,000,000 and a glass transition temperature of 80°C or more was obtained by polymerizing ²-pinene in the presence of a bifunctional vinyl compound.