BIOCIDAL COMPOSITIONS COMPRISING A HETEROCYCLE AND EITHER AN AGENT EFFECTING MEMBRANE PERMEABILITY, AN ISOTHIAZOLINONE, AN ISOTHIAZOLOTHIONE OR AN ALDEHYDE

摘要

A composition which comprises a cyclic thiohydroxamic acid derivative, including a metal complex thereof, together with a biocide material which is i) an agent affecting membrane permeability, ii) an isothiazolinone, or iii) an aldehyde. The cyclic thiohydroxamic acid derivative may be a zinc salt or complex of 3-hydroxy-4-methylthizol-2(3H)-thione. The agent affecting membrane permeability may be a phenol such as o-phenylphenol or may be a biguanide, including a polymeric biguanide, or a quaternary ammonium compound. The isothiazolinone may be 1,2-benzisothiazoline-3-one or 5-chloro-2-methylisothiazolin-3-one. The aldehyde may be formaldehyde or glutaraldehyde. The composition has biocidal activity.