| 摘要 |
<p>A polymer used for optical products wherein the polymer comprises 2,5-dimethyl-1,4-dithiane skeletons represented by formula (1): <CHEM> and 1,3,5-trimethylcyclohexane skeletons represented by formula (2): <CHEM> and a part of or all of bonds between the 2,5-dimethyl-1,4-dithiane skeleton and the 1,3,5-trimethylcyclohexane skeleton are thiourethane bonds. The polymer exhibits 1.63 or more of refractive index, 35 or more of Abbe's number and 100 DEG C or more of second-order transition point. The polymer is prepared by polyaddition of 2,5-dimercaptomethyl-1,4-dithiane and 1,3,5-triisocyanatomethylcyclohexane.</p> |
