摘要:
A polymer containing a recurring unit having an aliphatic polycyclic structure, wherein at least two atoms constituting the ring skeleton of the aliphatic polycyclic structure constitute the main chain of the polymer, and the recurring unit has an aliphatic ring containing a sulfonyl group as the constitutive group of the ring skeleton, has high refractivity, high Abbe's number, high-level heat resistance, high-level light transmittance and low water absorption.
摘要:
A resin composition for optical material, having a refractive index nD at a wavelength of 589 nm of at least 1.37, an Abbe's number vD satisfying vD≦63 and vD≦430−250×nD, and a glass transition temperature of not lower than 100° C. has high refractivity, low dispersiveness, heat resistance, good transparency and good releasability from mold.
摘要:
A norbornene-based polymer contains at least one kind of a repeating unit represented by the following formula (I): wherein R1 and R2 each represent a hydrogen atom, an alkyl group which may possess a substituent group or an aryl group which may possess a substituent group, L and L′ each represent a bivalent linking group or a single bond, and A and A′ each represent an aromatic group.