Animal ear-tags, their manufacture and their use

Drug – bio-affecting and body treating compositions – Solid synthetic organic polymer as designated organic active... – Polymer from ethylenic monomers only

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40300, 40301, 424 78, 424304, 424305, A61F 1300, A01N 3734, A01N 3700, G09F 300

Patent

active

042658764

ABSTRACT:
The invention relates to animal ear tags.
Ear tags for attachment to ears of animals such as cattle in accordance with the invention are made at least in part from a material comprising a solid organic polymeric macromolecular substance having a molecular weight above 1000 and a pesticidally-active compound having the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are independently selected from fluorine, chlorine and bromine; X is hydrogen, cyano or ethynyl; and Z is hydrogen, chlorine, fluorine or bromine. The invention also provides a method for making the tags by mixing the macromolecular substance and the compound of formula I and forming the tag by injection moulding, and further provides a method of controlling fly and tick populations in the vicinity of an animal by affixing to an ear of the animal a tag in accordance with the invention.
The ear tags are surprisingly effective in the control of insects and ticks on animals, such as cattle.

REFERENCES:
patent: 3852416 (1974-12-01), Grubb et al.
patent: 3942480 (1976-03-01), Hair et al.
patent: 3949708 (1976-04-01), Meeks
Chem. Abst-86, (12565b), (1977).
Chem. Abst-87, 162727R, 178973d, (1977).
Chem. Abst. 88-33129U, (1978).

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