| 摘要 |
PROBLEM TO BE SOLVED: To solve problems arising from resin degradation aggravated after prolonged high-temperature use and from the resin stuck fast to junctions of parts under such circumstances for making disassembly for maintenance difficult in cases where, for instance, a silicone resin or the like is used as a sealant for protecting components and parts in a heating apparatus or the like from water or dust. SOLUTION: The hot melt composition comprises a hydrogenated paraffin oil, a high molecular weight styrene-based block polymer, a (modified) polyphenylene ether resin, a tackifier resin, and an oxidation inhibitor. The composition remains free of degradation and high in sealing capability after prolonged exposure to high temperatures, and assemblies sealed by the composition are readily disassembled. COPYRIGHT: (C)2004,JPO&NCIPI
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