| 摘要 |
PURPOSE:To produce the titled composition having excellent storage stability and fluidity, and storable at a high temperature without causing crystallization and gelation, by mixing a water-insoluble biocide having low melting point, polyvinyl alcohol, and a water-soluble thickener at specific ratios and using the mixture as an essential component. CONSTITUTION:A pasty or solid water-insoluble biocide having a melting point of 38-110 deg.C, especially 38-90 deg.C, such as dimethyl-2,2,2-trichloro-1-hydroxyethyl phosphonate, etc. is added in an amount of 5-50wt% under agitation to an aqueous solution of a polyvinyl alcohol having a polymerization degree of 100-5,000 and a concentration of 0.1-10wt%, and stirred and mixed sufficiently. The objective stable composition can be produced by adding 0.001-10wt% water-soluble thickener such as carboxymethyl cellulose, etc., to the mixture. EFFECT:The composition is resistant to crystallization and gelation and is stable under severe conditions such as storage at a high temperature (60 deg.C) or in cycling test between a high temperature and a low temperature (-10 deg.C).
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