LIGHT-CURING COMPOSITE FOR OPTICAL DISKS, AND OPTICAL DISK

摘要

PROBLEM TO BE SOLVED: To provide a light-curing composite which is excellent in transparency and can constitute a cured material layer capable of suppressing the initial warping and temporal warping of an optical disk and an optical disk which can suppress its initial warping and temporal warping and is excellent in mechanical precision and durability with high moisture and heat resistance.

SOLUTION: The light-curing composite for optical disks contains a polyether skeleton containing urethane (meta) acryrate compound whose weight average molecular weight is 1,000-3,000 (content A). The optical disk has cured material layers made by curing the above light-curing composite.

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