| abstract |
[1] A β-phellandrene polymer which is a polymerization product of β-phellandrene. [2] The β-phellandrene polymer comprising β-phellandrene units represented by chemical formulae (I-1), (I-2), (II-1) and (II-2), a total amount of the β-phellandrene units being 50% by mass or more. [3] The β-phellandrene polymer, which has a number average molecular weight Mn of 40,000 or more. [4] The β-phellandrene polymer, wherein at least a part of olefinic carbon-carbon double bonds thereof are hydrogenated. [5] The β-phellandrene polymer, which has a glass transition temperature of 80° C. or more. |