| 摘要 |
PURPOSE:The titled composition which can form a cured article excellent in electric and heat conductivity within a short time when irradiated with ultraviolet rays, prepared by adding a photosensitizer and specified metal-coated inorganic powder to a photopolymerizable monomer or the like. CONSTITUTION:A powder is prepared by coating boron nitrile powder or alpha- alumina powder of a particle diameter of about 0.5-100mu with a film (about 0.1-30mu thick) of a metal, e.g., silver, copper or gold, by sputtering or vacuum metallizing. About 10'90pts.wt. obtaind powder and about 0.01-5pts.wt. photosensitizer, e.g., benzil or benzion isopropyl ether, are dispersed by mixing in 100pts.wt.photopolymerizable monomer, e.g., methyl acrylate, vinyl acetate, or styrene, or photocurable oligomer, e.g., polyester (meth)acrylate of a MW of about 200-3,000.
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