THERMOPLASTIC RESIN FOR LENSES, AND LENS COMPRISING SAME

WIPO Patent Application WO/2020/122122

A1

The present invention provides a thermoplastic resin for lenses, which enables the expansion of the range of variations of lens type so that an imaging lens designer can choice a lens among from various types of lenses.　The thermoplastic resin for lenses according to the present invention has both of a first structural unit derived from a dihydroxy compound represented by formula (1) (wherein R1, R2, R3 and R4 independently represent any one selected from a hydrogen atom, an alkyl group having 1 to 10 carbon atoms, an alkoxy group having 1 to 10 carbon atoms, a cycloalkyl group having 3 to 20 carbon atoms, a cycloalkoxy group having 6 to 20 carbon atoms, an aryl group having 6 to 10 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, an aryloxy group having 6 to 10 carbon atoms, an aralkyloxy group having 7 to 20 carbon atoms and a halogen atom; and the cyclobutane ring represents any one of a mixture of a cis-isomer thereof and a trans-isomer thereof, a cis-isomer thereof alone, and a trans-isomer thereof alone), and a second structural unit derived from a dihydroxy compound or a dicarboxylic acid compound, and also has a refractive index (nD) and an Abbe's number (ν) which satisfy mathematical formula (A):　nD < 1.156×10-4×ν2–1.289×10-2×ν+1.853 (A).

SATO KEISUKE (JP)
MATSUI MANABU (JP)
YANAGIDA TAKATSUNE (JP)
YAMANAKA KATSUHIRO (JP)
TSUNEMORI HIDEYUKI (JP)
IMAZATO KENTA (JP)

PCT/JP2019/048495

June 18, 2020

December 11, 2019

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TEIJIN LTD (JP)

C08G64/02; C08G63/64; C08G64/30; G02B1/04

JPH0220518A	1990-01-24
JPH02180954A	1990-07-13
JPH02222416A	1990-09-05
JP2015010127A	2015-01-19
JP2015137355A	2015-07-30

AOKI, Atsushi et al. (JP)

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