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    • 111. 发明专利
    • ACARICIDE
    • JPH0959106A
    • 1997-03-04
    • JP23897095
    • 1995-08-25
    • TOHOKU MUNEKATA KK
    • KUSAKAISHI SUSUMUTOMINAGA AKIKO
    • E04F15/02A01N25/08A01N25/10A01N25/18A01N25/34A01N53/00
    • PROBLEM TO BE SOLVED: To obtain a tatami (rush mat) underlay having an acaricidal effect sustained in the release by adding an acaricide to a specific composite material consisting mainly of porous rock. SOLUTION: An acaricidal material is prepared by adding an acaricide to a composite material comprising the powder or fine particles of porous rock and a resin. The porous rock is preferably zeolite. The resin is preferably a thermosetting resin, such as a urethane resin, an unsaturated polyester or an epoxy resin, which is liquid at room temperature. The composite material comprises the porous rock in an amount of preferably 50-86wt.%, especially preferably 60-80wt.%, and the resin component in the remaining amount. The acaricide includes d-T80-resmethrin and permethrin which are phosphate acaricides. The acaricide may preliminarily be mixed and adsorbed in zeolite, before the production of the composite material, may be diluted with a solvent and subsequently subjected to the immersion of the porous rock powder or particles therein after the production of the composite material, or may be adsorbed in the porous rock power or particles by a means such as a spraying means after the production of the composite material.