| 摘要 |
PROBLEM TO BE SOLVED: To obtain a light postcurable adhesive compsn. which shows a suffi cient pressure-sensitive adhesivity at an initial stage, ensures a sufficient avail able application time after light irradiation, and furnishes an excellent adhesive strength after curing. SOLUTION: This is a light postcurable adhesive compsn. contg. a cationically polymerizable compd. (A) having at least one cationically polymerizable group in one molecule, a photopolymerization initiator (B) which can polymerize or cure the cationically polymerizable compd. (A) with light irradiation, and at least one type of polymer (C). When the photopolymerization initiator (B) is activated by irradiating this adhesive compsn. with light, the conversion rate of the cationically polymerizable compd. (A) exceeds 10% in the time range of 5 min to 5 hr at 25 deg.C. Furthermore, the conversion rate is 50% or more when aged at 25 deg.C for 7 days.
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