| 摘要 |
<p>An emulsion paint comprises polyvinyl acetate, chalk, titanium dioxide and a solution of 4-chloroacetyl-acetanilide (bactericide) in ethylene glycol monomethyl ether and dimethyl-formamide.ALSO:A process for protecting organic materials from attack by bacteria and possibly also by fungi comprises incorporating in such materials or applying as a surface coating thereon an aromatic amide or sulphonamide derivative of the formula <FORM:0984514/A5-A6/1> where n is 0 or 1; Y1 is hydrogen or a chlorine atom; Y2 is hydrogen where Y1 is chlorine, or is hydrogen or chlorine where Y1 is hydrogen; Z is hydrogen or the chloroacetyl group -COCH2Cl; R, when n is 0, is an alkyl, monochloroalkyl or polychloroalkyl radical having 1 to 3 carbon atoms, a phenyl radical, a monochlorophenyl or polychlorophenyl radical, an amino group, an alkylamino radical having at most 5 carbon atoms, a dialkylamino radical having in total at most 5 carbon atoms, a phenylamino radical or a phenylamino radical monosubstituted by a chloroacetyl group, and R, when n is 1, is an alkyl, monochloroalkyl or polychloroalkyl radical having 1 to 3 carbon atoms; and X is a -CO- group when R is other than an alkyl or chlorinated alkyl radical, and a -CO- group or a -SO2- group when R is an alkyl or chlorinated alkyl group. Many examples of the active ingredients are given, of which the following are typical:- 4 - chloroacetyl - acetanilide, 4 - chloroacetyl-(p - chlorobenzoyl) - anilide, 4 - chloroacetylmethylsulphanilide, N - (n - butyl) - N1 - (4 - chloroacetylphenyl) - urea, 4 - chloroacetyl - 41 - acetamido - diphenyl ether and 4 - chloroacetyl - 41 - methanesulphonamido - diphenyl ether. Materials which may be protected include cellulose, wood, paper, leather, synthetic resin products, lacquers, paints, plasticizers and vegetable or animal mucilages and gels. The active ingredients can be used in the form of solutions in organic solvents, e.g. ethylene glycol monomethyl ether and dimethylformamide. They may also be used together with other fungicidal and/or bactericidal substances, e.g. halogenated salicylic acid alkylamides and anilides, halogenated diphenylureas, halogenated benzoxazolones, polychlorohydroxy diphenyl methanes and halogenated dioxy-diphenyl sulphides. Combinations specified are 4-chloroacetyl-acetanilide or 4 - chloroacetyl - 41 - chloroacetamido - diphenyl ether with 3 - trifluoromethyl - 4,41 - dichlorodiphenyl urea or 3,4,41-trichloro-21-hydroxy diphenyl urea; and 4-chloroacetyl-41-chloroacetamidodiphenyl ether with 2-hydroxy-3,5-dichlorobenzoic acid-31,41-dichloroanilide or with hexachlorophene.</p> |
