| 摘要 |
PURPOSE:To provide the titled preventive agent composed of a specific surfactant containing quaternary nitrogen atom, effective in lowering the activity of viruses transferred from tableware used by other people and capable of preventing infection with viral diseases through the medium of saliva in a public eating house. CONSTITUTION:The objective agent contains a surfactant containing a quaternary nitrogen atom and expressed by formula [R1 is organic group having 8-22C alkyl; R2 is alkyl, (alkyl-substituted)aralkyl, acylaminoalkyl, acyloxyalkyl, alkoxyalkyl, alkylpolyoxyalkylene or alkylallylpolyoxyalkylene; R3 and R4 are 1-4C alkyl, 2-4C hydroxyalkyl or 7-14C aralkyl; X is anionic counter ion such as halogen ion and hydroxyl ion], e.g. mono- and di-higher alkyl quaternary ammonium salt. The agent is used in the form of a solution in water, a hydrophilic organic solvent or their mixture.
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