Microbicidal slimicide compositions for industrial use
AssigneeKatayama Chemical Works Co., Ltd.
InventorsSakae Katayama, Osamu Umekawa
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Abstract
There disclose stable and non-aqueous microbicidal compositions which are useful for controlling slime in pulp and paper manufacturing processes and industrial cooling water systems and which comprise 4,5-dichloro-1,2-dithiol-3-one as the active ingredient, and specific surfactants and hydrophilic organic solvents.
Claims13
A stable microbicidal slimicide composition for industrial use which comprises 3-20 parts by weight of 4,5-dichloro-1,2-dithiol-3-one as active ingredient, at least 0.2 part by weight per 10 parts by weight of said active ingredient of a surfactant selected from the group consisting of N,N,N',N'-polyoxyethylene polyoxypropylene-ethylenediamines and alkylolamides type nonionic surfactants, and a sufficient amount of a hydrophilic organic solvent consisting essentially of a solvent selected from the group consisting of dimethylformamide, methyl cellosolve, phenyl cellosolve, diethylene glycol, dipropylene glycol, diethylene glycol monomethyl ether, and mixtures thereof to make 100 parts by weight of the composition, said composition being substantially free from water.
In a method for controlling slime formation in wood pulp or paper manufacture, having a water system the improvement comprising adding a slimicide composition to said water system which is composed of 3-20 parts by weight of 4,5-dichloro-1,2-dithiol-3-one as active ingredient, at least 0.2 part by weight per 10 parts by weight of said active ingredient of a surfactant selected from the group consisting of N,N,N',N'-polyoxypropylene polypropylene-ethylenediamines and alkylolamides type nonionic surfactants, and a sufficient amount of a hydrophilic organic solvent consisting essentially of a solvent selected from the group consisting of dimethylformamide, methyl cellosolve, phenyl cellosolve, diethylene glycol, dipropylene glycol, diethylene glycol monomethyl ether, and mixtures thereof to make 100 parts by weight of the composition, said composition being substantially free from water.
Dependencies are inferred from the claim text.