| 摘要 |
PROBLEM TO BE SOLVED: To provide an ultraviolet-curing type adhesive for optical isolators having excellent adhesiveness even under high-temperature and high-humidity conditions without limitations on pot life. SOLUTION: The ultraviolet-curing type adhesive for the optical isolators comprises a bisphenol type epoxy (meth)acrylate (A) having 500-850 average molecular weight, a polyfunctional acrylate (B) having≥2 acrylate groups in the molecule and an alkylphenone-based photopolymerization initiator (C). In the ultraviolet-curing type adhesive for the optical isolators, the content of the polyfunctional acrylate (B) based on 100 pts.wt. of the bisphenol type epoxy (meth)acrylate (A) is 10-40 pts.wt. The content of the photopolymerization initiator (C) is 0.5-8 pts.wt. based on 100 pts.wt. of the total amount of the bisphenol type epoxy (meth)acrylate (A) and the polyfunctional acrylate (B). COPYRIGHT: (C)2008,JPO&INPIT
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