?-PINENE-BASED POLYMER AND MOLDED ARTICLE COMPRISING THE SAME

摘要

Provided are a ß-pinene-based polymer, which has an excellent heat resistance, an excellent light resistance, a low water absorptivity and a high transparency; and a molded article thereof. A ß-pinene-based polymer which is a polymer containing 60% by mass or more of a ß-pinene unit, wherein 1% by mol or more but not more than 10% by mol of 6-membered rings derived from ß-pinene are aromatic 6-membered rings or the p-phenylene group content is 0.55% by mass or more but not more than 5.5% by mass, and preferably 90% by mol or more of olefinic double bonds have been hydrogenated or the cyclohexene-1,4-diyl group content is 5.6% by mass or less; and a molded article which comprises this ß-pinene-based polymer.