AT155152B - Process for driving away and controlling insects and their larvae. - Google Patents

Description

  

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  Process for driving away and controlling insects and their larvae.



   It has been found that one can find new, valuable means of dispelling and fighting
Insects and their larvae are obtained if one uses thianthrene in the usual manner, its
Derivatives or substitution products, the cyclically bound sulfur of which is not in the onium form, used in solutions or mixtures.

   Compounds of this type are known in large numbers. Some of them are enumerated below, without thereby reducing the scope of the present
Wanting to restrict the invention:
Thianthrene, 2. 6-dimethylthianthrene, 1.3. 5. 7-tetramethylthianthrene, 2-chlorothianthrene, 2. 7-dichlorothianthrene, 2. 7-dichloro-3. 6-dimethylthianthrene, 4. 5-dichloro-1. 8-dimethylthianthrene, dimethoxythianthrene (C. 1922, 1., 818), 2.3. 6. 7-tetramethoxythianthrene, dinitrothianthrene BI (3) 15;

   423, 3-nitro-6-methylthianthrene, 3-nitro-8-methoxy-5-methylthianthrene, 6-chloro-3-nitrothianthrene, 5. 8-dichloro-3-nitrothianthrene, 3-amino-6-methylthianthrene chlorohydrate, thianthlene dicarboxylic acid (C. 1922,
1., 818), thianthrene sulfonic acid (C. 1927, 1., 360), naphthianthias, etc., finer the S-oxides above
Compounds such as: thianthrene S-oxide, thianthrene-S-dioxide, thianthrene mono- or disulfone, 2. 6-dimethylthianthrene-S-oxides, 2.3. 6. 7-tetramethoxythianthrene-S-oxides, etc., or the disulfides which are derived from the thianthrene compounds, for example 3.7-dimethoxy-
2. 6-dioxythianthrene disulfide, etc. Most of these compounds are described in literature; if they are unknown, they can be produced using conventional methods.



   The thianthrenes mentioned are, for example, more suitable. d to protect wool,
Hair, fur, feathers, etc. like before moth damage. Even in very low concentrations, they give the treated goods reliable protection. Solutions in water or 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. In addition, the thianthrenes can be emulsified in oils, fats and creams or used as an additive to powders or in all of the application forms customary for the purpose of controlling pests, in particular insects.



   They can also be used in combination with other control and repellant agents that are already known for the same purposes.



    Example 1: 20 parts of thianthrene or another of the compounds listed above, for example 2. 6-dimethylthianthrene, 2. 7-dichloro-3, are dissolved. 6-dimethylthianthrene, or thianthrene-S-oxide u. a. in 980 parts of alcohol, treated fur, feathers or wool by dipping, centrifuging and drying.



     The goods treated in this way are moth-proof; even more dilute solutions are sufficient to achieve satisfactory protection.



   Example 2: If animal pests from the class of insects are sprayed, for example
Stick insects, with solutions that contain thianthrene or its derivatives or substitution products, the cyclically bound sulfur of which is not in the onium form, these are killed in a fairly short time.

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

 

Claims (1)

PATENT CLAIM: Process for driving away and controlling insects and their larvae, characterized in that, according to the usual application, thianthrene, its derivatives or substitution products whose cyclically bonded sulfur is not in the onium form, in solutions or Mixtures used. ** WARNING ** End of CLMS field may overlap beginning of DESC **.