GB487804A - Process for rendering materials mothproof - Google Patents

Abstract

Textiles, fur, and feathers are rendered moth-proof by treatment with a sulphonium compound of the formula <FORM:0487804/IV/1> in which X represents the radical of an inorganic acid or an organic sulpho or carboxyl compound, and R1, R2, R3 represent the same or different substituted or unsubstituted aromatic residues, or one of these may alternatively stand for a lower alkyl radical. The cyclic residues may be substituted by basic, acid or neutral substituents, such as NH2, NH.alkyl, N(alkyl)2, OH, O.alkyl, COOH, halogen, or alkyl. Two o the aryl residues may also be linked to one another, in ortho-positions to the S-atom, by S, O, CO, or NR (where R is an aliphatic or araliphatic residue). The compounds may be used in solution in water, an alcohol, a ketone, a hydrocarbon or other organic solvent and may be applied by brushing, spraying or immersion, or may be precipitated from alkaline solution by addition of an acid. The solutions are stated to have strong wetting action. When aqueous solutions are used they may contain also Glauber's salt. Examples of active compounds are triphenyl sulphonium chloride, tripara-oxy-triphenyl sulphonium chloride, S-phenyl-thianthrene-sulphonium chloride (prepared by condensing thianthrene-S-oxide in excess benzene in presence of aluminium chloride), 2 : 6-dimethyl-S-methyl-thianthrene sulphonium methosulphate (prepared by treating 2 : 6-dimethyl-thianthrene with dimethyl sulphate), 2 : 7-dichlor-S-methyl-thianthrene sulphonium methosulphate (prepared by treating 2 : 7-dichlorothianthrene with dimethyl sulphate), N - methyl - S - phenyl - diphenylamine sulphonium chloride (prepared by condensing N-methyl-S-oxy-thio-diphenylamine with benzene in presence of aluminium chloride), 3 : 6-dimethyl-N-methyl-S-methyl-diphenylamine-sulphonium methosulphate (prepared by treating 3 : 6-dimethyl-N-methyl-thio diphenylamine with dimethyl sulphate), 4-methyl-6-oxy-N.methyl-3-methyl-diphenylamine-sulphonium methosulphate (prepared by treating 4-methyl-6 - oxy - N - methyl - thio - diphenylamine with dimethyl sulphate), S - phenyl - di - ortho - phenylene - oxide - sulphonium chloride (prepared by condensing phenoxthine-S-oxide with benzene in presence of aluminium chloride) 3 : 6-dimethyl-S-methyl-ortho-phenylene-oxide-sulphonium methosulphate (prepared by treating 3 : 6-dimethyl-phenoxthine with dimethyl sulphate), 3 : 6 - diamyl - S - methyl - ortho - phenylene - oxide - sulphonium methosulphate (prepared by treating 3 : 6 - diamylphenoxthine with dimethyl sulphate), 1 : 3-dichloro - 6 - methyl - S - methyl - orthophenylene-oxide-sulphonium methosulphate (prepared by treating 1 : 3 dichloro - 6 - methylphenoxthine with dimethylsulphate) and S-methyl-thioxanthrone-sulphonium methosulphate (prepared by treating thioxanthone with dimethyl sulphate).