| 摘要 |
PURPOSE:To obtain a vermin repellent soluble in water, having prolonged action of vermin repellent component and remarkably suppressed transcutaneous absorption and applicable to various kinds of agents, by adding a methylated cyclodextrin to a vermin repellent component at a specific ratio. CONSTITUTION:The objective agent is a clathrate compound containing (A) 0.5-20.0wt% vermin repellent component such as N,N-dietyltoluamide, 2,3,4,5-bis(DELTA2-butylene)tetrahydrofuran, etc., and (B) 1/2-20 times weight (based on the component A) of a methylated cyclodextrin of formula (n is 6-9: at least one of the 3n A groups is CH3 and the others are H) capable of forming a clathrate compound, e.g. methylated beta-cyclodextrin having a weight-average substitution degree of 8.0-11.0 and containing >=50wt% compound having an ether substitution degree of 8-11. An aqueous solution containing >=10wt% said clathrate compound is transparent at room temperature and can be utilized as a component of various agents. EFFECT:The amount of repellent component can be decreased to enable the reduction of cost.
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