DE1077475B - Preparations for protecting materials against termite damage - Google Patents

Description

Means for protecting materials against termite feed are termites the most important and diverse animal species in tropical and subtropical countries Material pests. You can use not only the timber of the houses, but all utensils and technical goods made of wood, paper, textiles, plastics, varnishes, rubber, Leather etc. exist, destroy. It is therefore necessary to go through such materials suitable procedures to protect against termite damage. In more populated and economical meaningful areas is z. B. the protection of houses, furniture, textiles, cables, Electrical appliances, car and radio components, upholstery materials, certificates, book covers etc. an important problem.

So far, termite repellants have been used almost exclusively in practice for lumber and building boards. In many cases, this is what is cheap but irritating to the skin Pentachlorophenol used for wood.

The protection of materials other than wood has so far been of little interest found. Whole houses can with their content through one - but right costly - soil treatment to be protected from termite invasion. So far, mainly products such as 1,2,3,4, 10,10-hexachloro-1,4,4a, 5,8,8a-hexahydro-1,4,5,8-dimethylene-naphthalene have been used, 2,3,4,5,6,7,8,8-octachlor-3a, 4, 7,7a-tetrahydro-4,7-methylenindane, 1,1,1-trichloro-2,2-bis- (p -chlorphenyl) -ethane, 1,2,3,4,10,10-hexachloro-6,7-epoxy-1,4,4a, 5,6,7,8,8a-octahydro-1,4,5,8-dimethylene-naphthalene and 1,4,5,6,7,8,8-heptachlor-3a, 4, 7,7a-tetrahydro-4,7-endomethylene indene, which as Insecticides are known under various trade names.

As a protective agent for other materials, e.g. B. paper and jute occasionally also 1,1,1-trichloro-2,2-bis (p-chlorophenyl) -ethane or γ-hexachlorocyclohexane used.

In the search for particularly effective products it has now been found that compounds of the type of haloalkylsulfonic acid arylamides in the aryl radical are further substituted by halogen atoms, an excellent termite protection effect own. The effectiveness could both in laboratory tests and after familiarization to be confirmed in engineering materials. The connections protect wood, building boards, Paper, textiles, plastics, rubber, leather and other materials are included Use from 1 to 20%, sometimes even in a significantly lower concentration, permanently against termite damage.

Example 1 A 0.5 mm thick filter disk with a diameter of 9 cm is used with 2 cc of a 0.05% acetone solution of chloromethanesulfonyl-2,4-dichloroaniline treated so that the paper is soaked evenly. After 4 days of evaporation 20 termite workers are placed in a metal ring on the treated paper surface. All test animals are dead after 24 hours of contact; the filter disc remains undamaged. The experiment with a 0.005% solution shows an almost equally good effect. To The filter disc treated with 0.05% solution is stored in a tropical climate the same effect even after months.

Example 2 1 part by weight of the compound chloromethanesulfolyl-2,4,5-trichloroaniline is rolled in 100 parts by weight of polyethylene at 130 ° C for 6 to 8 minutes, so that the active ingredient is homogeneously dissolved in the polyethylene. Polyethylene foils equipped in this way have both compulsory feeding and feeding selection tests after a 2-year test period 100% toxic effect and complete resistance to termites. At Mixtures of dichloro and trichloro compounds can also be used in place of the compounds mentioned be used..

With the same experimental set-ups as in the previous examples described - showed. the following compounds are found to be effective at term: chloromethanesulfonyl-2,5-dichloroaniline, 'Chlormethanesulfonyl-J', 5-dichloroaniline, chloromethanesulfonyl-3,4,5-trichloroaniline, Chloromethanesulfonyl-2,3,4,6-tetrachloroaniline, chloroethanesulfonyl-2,4-dichloroaniline.

Claims (1)

. . , PATENT CLAIM: Agent for protecting materials against damage caused by termites, characterized in that it contains chloroalkylsulphonic acid arylamides of the general formula contains, in which m is a number from 2 to 4 and n is 1 or 2.