AT155308B - Method for protecting wool, hair, fur, feathers, etc. like before moth damage. - Google Patents

Description

  

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  Method for protecting wool, hair, fur, feathers and the like like before moth damage.



   It has been found that halogen-substituted aryl sulfone or aryl sulfoxide derivatives in which the SO2 or SO group is bonded on one side to a halogenated benzene nucleus and on the other side to R, SR or SO, R, in which R can be: Aryl, aralkyl or alkyl, and where the unbranched or branched aralkyl or the alkyl chains are replaced by further atoms or groups of atoms, e.g. B.



  Halogen, O, S, SO, SO2, NH, CO, NH-CO, etc., can be substituted or interrupted, are excellently suited to wool, hair, feathers, fur and the like. Like. To protect permanently from moth damage.



  Such an effect of these sulfur derivatives was by no means foreseeable, since it is well known that the entry of other oxidized sulfur groups, such as the sulfonic acid group, greatly reduces or completely destroys their toxicity in aromatic compounds. Martius yellow (2, 4-dinitro-1-naphthol), which is toxic even in small amounts, is rendered harmless by converting it into sulfonic acid, proof that the sulfone group can completely cancel out the toxic effects of nitro. The entry of other, inherently indifferent, acidic groups also considerably weakens the physiological effect or completely eliminates it.



   A number of the compounds are mentioned below, most of which are known; where new compounds are involved, they can be obtained by known processes: 4-4'-dichloro-diphenylsulfoxide; 4-4'-dichloro-diphenyl-sulfone; 4-4'-dibromo-diphenylsulfoxide;
 EMI1.1
 phenylsulfon-carbinol and its esters; 3-nitro-α-4'-chlorophenylsulfon-benzyl alcohol; 1- thio-4-chlorophenyl-4'-chlorobenzenesulfonic acid ester (4-4'-dichloro-diphenyl-disulfoxide); 4-chloro-phenyl-sulfoacetic acid nitrile.



   4-4'-dichloro-diphenyl-disulfone; 4-4'-dichloro-diphenyl-disulfon-methane, phenyl-2-2'-dichloro-diphe-
 EMI1.2
   Tri- (4-chloro-phenylsulfone) -methane etc.



   Even in very low concentrations, the sulfones and sulfoxides mentioned are outstandingly suitable for the permanent protection of wool, hair, fur, feathers and the like. like before moth damage. Solutions in cheap organic solvents, such as hydrocarbons, chlorinated hydrocarbons, alcohols, ketones, etc., or mixtures thereof, are mainly suitable for use.



  The substances to be protected can be impregnated by brushing, spraying or dipping.



  These sulfones and sulfoxides can also be used in combination with other control and repellant agents which are already known for the same purposes.



   Example: 2 parts of 4-4'-dichloro-diphenylsulfoxide are dissolved in 998 parts of alcohol, furs, feathers or wool are treated by dipping, centrifuged and dried. The goods treated in this way are moth-proof; even dilute solutions are sufficient, e.g. B. l '/ oige, in order to achieve a very good protection.



   Instead of 4-4'-dichloro-diphenylsulfoxide, other of the compounds mentioned can also be used, e.g. B. 4-4'-dichloro-diphenylsulfone or 4-4'-3-trihlorodiphenylsulfone.

** WARNING ** End of DESC field may overlap beginning of CLMS **.

 

Claims (1)

PATENT CLAIM: Method for protecting wool, hair, fur, feathers and the like The like. Before moth damage by the immersion process by means of solutions of water-insoluble moth repellants in organic solvents, characterized by the use of compounds which contain a further unsubstituted or further arbitrarily substituted halogenated aryl nucleus connected by a sulfone or sulfoxide bridge with the radicals R, SR or SO , where R is aryl, aralkyl or alkyl radicals and where the unbranched or branched aralkyl or the alkyl chains are replaced by other atoms or groups of atoms, such as. B. halogens, O, S, SO, SO2, NH, CO, NH-CO, etc., can be substituted or interrupted. ** WARNING ** End of CLMS field may overlap beginning of DESC **.