| 摘要 |
PROBLEM TO BE SOLVED: To obtain the subject sealer capable of manifesting an excellent adhesion, moisture proof reliability and flexibility by using a liquid epoxy resin, a hardening agent comprising a specific resin, a filler having a specified particle diameter and a hardening promoter as principal ingredients. SOLUTION: This sealer consists essentially of (A) a liquid epoxy resin (preferably a bisphenol-A type epoxy resin, etc., having <=1,500 ppm total chlorine content), (B) a novolak resin having <=75 deg.C softening point by a ball and ring method (preferably a phenolic novolak resin containing 20-80 wt.% two-ring body), (C) a filler having <=10μm particle diameter (preferably a fused silica, a crystal silica, silicon nitride, etc.), and (D) a hardening promoter, and the softening point of the (melted) mixture of the components A and B measured by a boil and ring method is <=50 deg.C. A liquid crystal cell sealed by the sealer is excellent in adhesive strength, moisture proof reliability and flexibility. Further, the production of the liquid crystal cell is performed at a room temperature.
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