Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Patent
1998-01-30
1999-09-28
Levy, Neil S.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
424405, 424408, 424409, 424421, 504206, 71DIG1, 514613, 514617, 514625, 514627, 514629, A01N 2532
Patent
active
059584394
DESCRIPTION:
BRIEF SUMMARY
The present invention relates to a plant protection composition including at least one polyalkoxylated amidoamine.
The application of the plant protection active substances to sites to be treated is generally carried out by atomization of corresponding fluid dispersions. These are either solutions in organic solvents, or aqueous dispersions or solutions.
In the case of aqueous solutions, at least one surfactant and/or another compound is generally present with a view to favouring the solubilization and/or increasing the biological activity of the active substance under consideration.
By way of illustration, the conventional aqueous formulations of glyphosate can be mentioned in particular. Glyphosate is a very highly used herbicide of aminophosphate type and its commercial formulations advantageously incorporate an ethoxylated amine.
The presence of this ethoxylated amine considerably increases the biological activity of the glyphosate and in addition leads to a formulation which remains effective whatever the climatic use conditions. In all probability, the ethoxylated amine activates the diffusion of the glyphosate across the cuticular barrier of the plants and/or vegetables.
The interest in these compounds, with synergistic effect on the biological activity, and possibly beneficial effect on the solubility of the active principle with which they are associated, is unfortunately often affected by their chemical toxicity. In fact, the organic solvents, surfactants or subsidiary compounds like the ethoxylated amines pose obvious toxicity problems. The ethoxylated amines thus turn out to be markedly more irritant and toxic than glyphosate itself.
Taking into account, more and more seriously, different problems of ecological nature leads to research into plant protection compositions, preferably water-soluble, endowed with a biological activity comparable to current formulations and on the other hand with markedly reduced toxicity.
The present invention specifically relates to providing a plant protection formulation in keeping with these requirements.
More particularly, the present invention relates to a composition comprising as active principle at least one water-soluble plant protection active substance and additionally comprising an effective quantity of at least one polyalkoxylated amidoamine of average formula (1) or (2): ##STR1## in which: R.sup.1, which are identical or different, denote a linear or branched alkyl or alkenyl, cycloalkyl or alkylaryl C.sub.2 -C.sub.22 hydrocarbon group, -C.sub.4 alkyl radical, can be zero with p+q being between 1 and 20 and r+s+t being between 1 and 20.
Unexpectedly, the abovementioned amidoamines, in the presence of plant protection active substance, have an adequate solubility in aqueous medium and a beneficial effect on the diffusion of this plant protection active substance within cuticular membranes.
Such compounds especially advantageously replace the conventional ethoxylated amines in the plant protection formulations including, for example, as active substance at least one aminophosphate derivative. They lead to formulations with very satisfactory activity and endowed with an appropriate surface tension.
In addition, these compounds have the advantage of being biodegradable and have a very weak irritant character. It is in fact to be noted that these products can especially enter into the composition of cosmetic formulations on account of this property.
Finally, apart from the advantages mentioned above, it has been confirmed that the abovementioned amidoamines also have biological activator properties of plant protection active substances.
However, other advantages and characteristics of the present invention will appear more clearly on reading the description and examples which follow.
Plant protection active substance is understood as meaning, according to the invention, insecticides, herbicides, fungicides but also nutritive elements promoting the growth and development of plants. They are preferably herbicides.
Among the preferred herbicides according to
REFERENCES:
patent: 5118444 (1992-06-01), Nguyen
patent: 5663117 (1997-09-01), Warner
patent: 5668085 (1997-09-01), Forbes
HCAPlus Abstract of Block Drug Co DE 3005380 Aug. 28, 1980.
Levy Neil S.
Rhodia Chimie
Seugnet Jean-Louis
Shedden John A.
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