Drug – bio-affecting and body treating compositions – Deodorants
Patent
1996-05-15
1998-02-24
Page, Thurman K.
Drug, bio-affecting and body treating compositions
Deodorants
424 766, 424400, A61L 1100, A61K 900
Patent
active
057209472
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to compositions for deodorizing foul-smelling animal faeces, such as liquid manure, in particular liquid pig manure, and faeces arising from poultry-rearing: ducks, chickens, and the like. The present invention also relates to the corresponding deodorizing process.
Intensive rearing is a considerable source of nuisance, the pig-rearing sector, with the liquid manure, being a not insignificant component of this. The pig population generates large amounts of liquid manure which, apart from the pollution problem caused in particular by overspreading, are sources of nuisance on account of the smells, both as regards livestock houses, with storage under slatted floors, and as regards their storage, their treatment and their spreading.
Several deodorizing systems are known. The objective of these systems is to reduce the smell and also the polluting components. These systems, which are often very expensive, since they require investments very often regarded as not productive, do not specifically, and not always efficiently, sort out the problem of the smells.
Many substances have been proposed for solving the problems of smells from animal faeces; they most often act by masking the smell, that is to say by substitution of the smells of the faeces by those which they give off.
However, the use is known, from European Patent Application EP-A-0 434 523, of undecylenic acid esters, polyoxyalkylenated with 2-10 polyoxyalkylene units, the advantage of these esters being that their own smell is not really noticeable, unlike the case with methyl undecylenate. Nevertheless, it is apparent that these deodorizing agents for liquid manure had to be further improved. It is this objective which was achieved in the present invention.
It has in fact been discovered that a composition, comprising at least two constituents from (a) normal superphosphates, (b) undecylenic acid and its esters, including methyl undecylenate, and (c) sodium perborate, always displayed, on examination of the effect/dose diagrams (as percentage of smell intensity), a potentiating effect, especially of the effect of normal superphosphate with undecylenic acid or ester and sodium perborate respectively and of sodium perborate with undecylenic acid or ester.
Another unexpected effect is that it was possible to achieve excellent results, for example at 15% of smell intensity in the case of a composition formulated in order to be able to treat faeces with 5000 ppm of normal superphosphate and 320 ppm of methyl undecylenate.
Yet another unexpected effect is observed in the fact that methyl undecylenate no longer has its own highly noticeable smell when it is, at the time of use, incorporated in the faeces in combination with the normal superphosphate or with the normal superphosphate+sodium perborate, mixing of the constituents being carried out only at the time of use, or the methyl undecylenate alternatively being incorporated separately from the other constituents in the mass to be treated. In the classification of the formulations by quality (see Table 3 below), comparison of formulations 7b, 4b and 2b, which make it possible to treat the faeces with 100 ppm of methyl undecylenate, does not result in the same percentage, as might have been expected. In fact, it is clearly shown in the European Patent Application mentioned as reference that methyl undecylenate has its own highly noticeable smell.
Moreover the compositions containing the three constituents provide excellent results, making it possible in particular to achieve values of the order of 10% of the initial smell intensity, such as, for example, with a composition formulated in order to be able to treat the faeces with 7500 ppm of normal superphosphate, 150 ppm of methyl undecylenate and 300 ppm of active O.sub.2 from sodium perborate.
The first subject of the present invention is therefore compositions for deodorizing animal faeces such as liquid manure, in particular liquid pig manure, characterized in that they comprise at least two constituents from: polyoxyalkyl
REFERENCES:
patent: 3124459 (1964-03-01), Erwin
patent: 3124460 (1964-03-01), Erwin
patent: 4464193 (1984-08-01), Kaneko et al.
patent: 4617047 (1986-10-01), Bretzloff
patent: 5275783 (1994-01-01), Menassa et al.
Basset Jacques
Caupin Henri-Jean
Wable Francis
Elf Atochem S. A.
Page Thurman K.
Shelborne Kathryne E.
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