Patent GB-981202-A (GB)
Title: Protection of organic materials against attack by fungi or bacteria
IPC: C07F9/50
Filed: 1962-06-05
Abstract: Polyvinyl acetate emulsion paints are protected against attack by fungi or bacteria by incorporating therein a compound selected from araliphatic ketones having two benzene nuclei joined together by a direct linkage or by way of an oxygen or sulphur atom or by way of an -SO2- or -CH2-group and having in one of said benzene nuclei a chloroacetyl group, corresponding compounds in which said benzene nuclei are joined by an oxygen atom or -CH2-group and additionally by a direct linkage to form a five-membered middle ring, and compounds corresponding to any of the aforementioned types in which one or both of the benzene nuclei contain further substituents. Examples of such araliphatic ketones are 4-chloroacetyl-diphenyl sulphone, 4-chloroacetyl-41-chloro-diphenyl sulphide and 4-chloroacetyl-41-nitro-diphenyl ether.ALSO:A process for protecting organic materials from attack by fungi or bacteria comprises incorporating in such materials or applying as a layer thereon a compound selected from aralphatic ketones having two benzene nuclei joined together by a direct linkage or by way of an oxygen or sulphur atom or by way of an -SO2- or -CH2- group and having in one of said benzene nuclei a chloroacetyl substituent, corresponding compounds in which said benzene nuclei are joined by an oxygen atom or -CH2- group and additionally by a direct linkage to form a five-membered middle ring, and compounds corresponding to any of the aforementioned types in which one or both of the benzene nuclei contain further substituents.  Preferred araliphatic ketones are those having the formul  (a) <FORM:0981202/A5-A6/1> wherein n is 0 or 1, and R is a chlorine atom in any desired p  position or a nitro, methylsulphonyl or monochloroacetyl group in the p-position to the bond linking the benzene nuclei; (b) <FORM:0981202/A5-A6/2> wherein n is 0 or 1, X is an oxygen or sulphur atom or a -SO2- or -CH2- group, and R is a chlorine atom in any position or a nitro or methyl sulphonyl group in p-position to the bridging member X and, when X is oxygen, R can also be the monochloroacetyl group in the p-position to the bridging member X; (c) <FORM:0981202/A5-A6/3> wherein X is an oxygen atom or -CH2-group.  The araliphatic ketones can be applied to said organic materials in the form of compositions, e.g. dissolved in solutions of wetting or cleansing agents, in paints or lacquers, in plasticizers, or in ethylene glycol monoethyl ether.  They can also be applied in combination with other fungicidal and/or bactericidal substances, e.g. with halogenated salicylic acid alkylamides and anilides, halogenated diphenyl ureas, halogenated benzoxazolones, polychlorohydroxy diphenylmethanes, and halogenated dihydroxydiphenyl sulphides.  Optional active compounds specified are 1-dodecyl-2-imino - imidazolidine hydrochloride, 3,4,41-trichloro - 21 - hydroxydiphenyl-urea, 2-hydroxy - 3,5 - dichlorobenzoic acid - 31,41-dichloro-anilide, hexachlorophene and 3-trifluoromethyl - 4,41 - dichloro - diphenylurea.  The process of the invention can be applied, for example, in the treatment of paper, wood, and other cellulose materials, leather, cotton and wool.