| abstract |
A polycationic bactericidal/algicidal agent containing as the active ingredient a polymer composed of repeating units represented by general formula (I) and having a number-average molecular weight of 1,000 or above, wherein A represents a single bond, oxygen, phenylene, dioxyethylene or tetramethyldisiloxane; X₁⁻ and X₂⁻ may be the same or different from each other and each represents a counterion of a quaternary salt; p and q may be the same or different from each other and each represents an integer of 1 to 6; and m represents an integer of 0 to 6, provided that A, X₁⁻, X₂⁻, p, q and m may be the same or arbitrarily different from repeating unit to repeating unit. |