DE1143669B - Anti-mite agents - Google Patents

Description

Termites play a major role as material pests in tropical and subtropical countries. Although the insects mentioned only digest cellulose, they also destroy substances that contain cellulose almost all other materials, regardless of their composition. So termites attack as Material pests in the broadest sense in addition to wood ζ. Β. also textiles, document paper, books, Electrical devices, insulation, switchgear, car and machine components, conveyor belts, construction and insulating materials for housing and road construction, etc. The damage done is in the In most cases it is very difficult because termites, as social insects, always appear in larger groups.

Since direct control of the pests is often impossible due to their hidden way of life the termite-prone materials, i.e. wood, textiles, paper, plastics, paints, Rubber, leather, bitumen, etc., through appropriate equipment with suitable means before Attack and destruction by termites. The circle of those suitable for this purpose Preparations is very limited; because the substances in question must be those for incorporation the high temperatures required for the materials to be protected, vulcanization etc. survive without the termite protection effect being lost or impaired. Furthermore, the preparations should also be used in the storage and use of the finished materials Tropical climate remain stable.

In contrast to pesticides or pesticides, termite repellants must which have an insecticidal effect, do not destroy the pests to be controlled, d. H. kill. A means to Protection against termite damage, as the name suggests, must first and foremost be a long-term anti-fretting protection Have an effect without neglecting the quality and properties of the finished materials in in an unfavorable way to influence. In addition, the application of the means that the termite resistance causes no physiological damage to humans or livestock.

It has now been found that alkoxyphenyl-N-methylcarbamate of the general formula means for protecting materials against termite damage

Applicant:

Paint factories Bayer Aktiengesellschaft, Leverkusen

Dr. Rudolf Heiss, Dr. Ernst Böcker,

Cologne-Stammheim,

and Dr. Ingeborg Hammann, Cologne,

have been named as inventors

Lower alkyl radicals, while R 'and R "are preferably lower alkyl radicals and η is 0, 1 or 2, are outstandingly suitable for protecting materials of the most varied types against termite damage. The compounds to be used according to the invention can be used, inter alia, for protecting wood, Building boards, paper, textiles, plastics, paints, natural and synthetic rubber, leather, bitumen and cement compounds and other termite-prone materials are used.

The following examples explain the invention:

example 1

R "O

CH ₃

in which R stands for hydrogen or a preferably 2 ecm of a 0.05% strength acetone solution of 3,5-dimethyl-4-methoxyphenyl-N-methylcarbamate are applied to a 0.5 mm thick filter disc 9 cm in diameter in such a way that the paper is evenly saturated. After 4 days of evaporation, 20 termite workers are put into one Metal ring on the paper surface treated in this way. The paper remains for a 3-day test period undamaged. The experiment with a 0.005% and with a 0.0005% solution of the above Connection shows the same result, while the untreated counterpart pattern is destroyed by eating. After 3 months of storage in a tropical climate with constant air change, those with the 0.05- and 0.005% solution equipped filter disks with equally good anti-fretting properties.

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Claims (1)

GERMAN PATENT OFFICE F33888IVa / 451 REGISTRATION DATE: MAY 9, 1961 NOTICE DE »REGISTRATION AND ISSUE OF EDITORIAL: 14th F E B RU AR 1963