| 摘要 |
PROBLEM TO BE SOLVED: To obtain an adhesive composition consisting essentially of a specific photopolymerization initiator and an UV light-curable compound, and enabling the mutual adhesion of opaque substrates having a whole light transmittance of 0.01-20% in a wavelength range of 280-380nm. SOLUTION: This light-curable adhesion composition consists essentially of (A) a photopolymerization initiator having a molar absorption coefficient of >=200 at a wavelength of >=360nm and (B) an UV light curable compound. The component A is preferably a compound having a molar absorption coefficient of 1,000 at a wavelength range of 360-450nm, such as 2,4- diethylthioxanthone. The content of the component A in the composition is preferably 0.5-10wt.%. The component B preferably comprises 50-95w/w% of a (meth)acryloyl group-containing monomer and 5-40w/w% of an oligomer containing two or more (meth)acryloyl groups. The monomer is preferably phenyloxyethyl(meth)acrylate, etc. The oligomer is preferably epoxy(meth) acrylate, etc. |
