Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Biocides; animal or insect repellents or attractants
Patent
1997-10-29
1999-09-07
Levy, Neil S.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Biocides; animal or insect repellents or attractants
424406, 514114, 514937, 514971, 514975, 504206, A01N 2502
Patent
active
059484217
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a novel aqueous liquid agricultural composition and a novel adjuvant composition for agricultural chemicals.
2. Description of the Related Art
Agricultural chemicals including insecticides, fungicides (or bactericides), herbicides, miticides (or acaricides) and plant growth regulators have been used in various dosage forms, and one example thereof includes a liquid formulation comprising a water-soluble agricultural chemical. In such a liquid formulation, it is desirable that the concentration of the agricultural chemical is as high as possible. However, it is difficult to say that the concentrations of the agricultural chemicals of the liquid agricultural chemical formulations which are now commercially available are satisfactorily high.
Further, it has been known that the effects of agricultural chemicals can be enhanced by using cationic surfactants of an alkylene-oxide-addition type together with the agricultural chemicals (see WO95/33379). However, when liquid agricultural chemical formulations each comprising an agricultural chemical and the above-described cationic surfactant at high concentrations have been prepared, phase separation, sedimentaion of insoluble matters or the like has occurred in some cases. That is, it has been difficult to prepare a liquid agricultural chemical formulation which is uniform and stable. Particularly when the liquid formulation further comprises a chelating agent or a water-soluble inorganic salt, phase separation or sedimentaion of insoluble matters has readily occured.
DISCLOSURE OF THE INVENTION
SUMMARY OF THE INVENTION
An object of the present invention is to provide an aqueous liquid agricultural composition which contains an agricultural chemical at a high concentration and is excellent in stability.
Another object of the present invention is to provide a method for converting a certain agricultural composition into a stable liquid.
Still another object of the present invention is to provide an adjuvant composition for agricultural chemicals which is useful in the preparation of an aqueous liquid agricultural composition.
The present inventors have extensively studied to attain the above-mentioned objects. As a result of the studies, the present inventors have found that an aqueous liquid agricultural composition which contains an agricultural chemical at a high concentration and which is excellent in stability, can be prepared by using an agricultural chemical, a specific alkylene-oxide-addition-type surfactant having the excellent effect of enhancing the efficacy of the agricultural chemical, and at least one member selected from the group consisting of specific acid salts of amines and specific quaternary ammonium salts. Further, the present inventors have found that even when such the agricultural composition further contains a chelating agent or a water-soluble inorganic salt, the stability thereof can also be retained. The present invention has been completed on the basis of these findings.
Thus, the first embodiment of the present invention relates to an aqueous liquid agricultural composition comprising (a) a water-soluble agricultural chemical, (b) at least one member selected from the group consisting of compounds represented by the following formula (I) and derivatives thereof, and (c) at least one member selected from the group consisting of acid salts of compounds represented by the following formula (II) and compounds represented by the following formula (III): ##STR2## wherein R.sup.1, R.sup.2 and R.sup.3 may be the same or different from one another and each independently represents a hydrogen atom, a linear or branched alkyl or alkenyl group having 5 to 29 carbon atoms, a group represented by the formula: ##STR3## wherein R.sup.7 represents a linear or branched alkyl or alkenyl group having 5 to 29 carbon atoms, or a group represented by the formula: ##STR4## wherein R.sup.a represents a linear or branched alkyl or alkenyl group having 5 to 29 carbon a
Hasebe Keiko
Hioki Yuichi
Okano Tetsuya
Sato Tatsuo
Suzuki Tadayuki
Kao Corporation
Levy Neil S.
Monsanto Company
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