Plant protecting and regulating compositions – Plant growth regulating compositions – Designated nonactive ingredient containing
Reexamination Certificate
2000-04-03
2001-11-06
Clardy, S. Mark (Department: 1616)
Plant protecting and regulating compositions
Plant growth regulating compositions
Designated nonactive ingredient containing
C514S772000, C514S975000
Reexamination Certificate
active
06313074
ABSTRACT:
TECHNICAL FIELD
The present invention relates to a novel effect enhancer for an agricultural chemical, an agricultural chemical formulation, an agricultural chemical composition, and a method for enhancing the effect of the agricultural chemical.
BACKGROUND ART
Agricultural chemicals such as insecticides, bactericides, herbicides, acaricides and plant growth moderators have been used in the forms of emulsions, hydrates, particles, powders and flowables. In this case, in order to sufficiently obtain the effects of a technical grade of active ingredient or an active compound for an agricultural chemical, various contrivances regarding the formulation and physical properties of the agricultural chemicals have been made, but it is now difficult to further enhance the effects of the agricultural chemicals by the contrivances of their formulation.
Furthermore, since the development of a novel agricultural chemical is more difficult, it is industrially meaningful to further enhance the activity of the already existing agricultural chemicals.
DISCLOSURE OF THE INVENTION
The present inventors have intensively investigated with the intention of developing an effect enhancer for an agricultural chemical by which the effect of the agricultural chemical can be enhanced by combining it with a technical grade of active ingredient or an active compound for an agricultural chemical, and a method for enhancing the effect of the agricultural chemical. As a result, it has been found that a specific polyoxyalkylene-having surfactant has an effect enhancement function particularly to various agricultural chemicals, and the present invention has been completed.
That is to say, the present invention provides an effect enhancer for an agricultural chemical containing a compound represented by the formula (I) as an effective component. Further, the present invention provides a method for enhancing the effect of the agricultural chemical by feeding the above-mentioned effect enhancer for the agricultural chemical and the agricultural chemical to a site where the effect of the agricultural chemical is necessary;
R—O[(EO)
x
(PO)
y
](EO)
z
—H (I)
wherein EO is an oxyethylene group; PO is an oxypropylene group; R is a straight-chain or branched alkyl group or alkenyl group having 6 to 30 carbon atoms; x is a value of 1 to 30 on the average; y is a value of 1 to 30 on the average; and z is a value of 1 to 30 on the average.
Furthermore, the present invention provides a composition containing a compound represented by the formula (I) and a technical grade of active ingredient or an active compound for an agricultural chemical, i.e., an agricultural chemical formulation and an agricultural chemical composition.
Besides, the present invention provides use of the compound represented by the formula (I) as the effect enhancer for an agricultural chemical.
Here, a copolymer represented by the formula [(EO)
x
(PO)
y
] may be a random copolymer or a block copolymer of ethylene oxide and propylene oxide. The compound represented by the formula (I) can be manufactured by adding ethylene oxide and propylene oxide to an alcohol R—OH. In short, in a typical case, x mol of ethylene oxide may be added to 1 mol of the alcohol R—OH, and y mol of propylene oxide may be then added thereto, and z mol of ethylene oxide may be lastly added thereto. Alternatively, x mol of ethylene oxide and y mol of propylene oxide may be mixed with each other, and the resultant mixture may be then reacted with the alcohol R—OH.
As the compound represented by the formula (I) which is contained as an effective component in the effect enhancer of the present invention, a compound in which R is a straight-chain or branched alkyl group or alkenyl group having 8 to 20 carbon atoms is preferable. Furthermore, it is preferable that x and z in the formula (I) are each a value of 1 to 10 on the average.
Mechanisms, in which the effect enhancer for the agricultural chemical of the present invention assumes a remarkable effect enhancement function irrespective of the kind of structure of the agricultural chemical, have not been definitely clarified, but one of the mechanisms can be presumed to be that since the dissolving power of the effect enhancer of the present invention is very high, the agricultural chemical can be ground into fine particles to accelerate its impregnation into plants, insects or bacteria. The form of the effect enhancer for the agricultural chemical of the present invention may be any of a liquid, a powder and particles, and the form of the effect enhancer is not restrictive.
A method of using the effect enhancer for the agricultural chemical regarding the present invention and a method for enhancing the effect of the agricultural chemical include a method of using a composition containing the effect enhancer for the agricultural chemical, i.e., an agricultural chemical formulation and an agricultural chemical composition, and a method of using the effect enhancer for the agricultural chemical at the time of the dilution of an agricultural chemical (not containing the effect enhancer of the present invention), but by the use of either of these methods, an effect enhancement function which is intended by the present invention can be obtained. Furthermore, the effect enhancer for the agricultural chemical regarding the present invention is not pharmaceutically harmful to various crops, and so it can be safely used.
When the effect enhancer for the agricultural chemical of the present invention is blended with a prevalent agricultural chemical for a plant or an animal and then used as the agricultural chemical formulation and the agricultural chemical composition, or when the effect enhancer for the agricultural chemical is used together with the above-mentioned agricultural chemical, its extermination effect can be improved remarkably. In addition, the effect enhancer for the agricultural chemical of the present invention also has a high safety. Hence, since the activity of the already existing agricultural chemical can be improved by the use of the effect enhancer for the agricultural chemical of the present invention, the choices of the agricultural chemicals to be used by a producer can be increased. Therefore, various advantages can be expected by using an agricultural chemical which is poor in the effect but which is inexpensive or highly safe.
The present invention provides a composition containing at least one of compounds represented by the formula (I) and another surfactant. Moreover, the present invention provides a method for feeding the compound represented by the formula (I) and the above-mentioned surfactant to a site where the effect of the agricultural chemical is required. According to this method, the use amount of the compound represented by the formula (I) can be reduced, while the effect enhancement of the agricultural chemical is maintained. As the surfactant, a nonionic surfactant, an anionic surfactant, a cationic surfactant, an amphoteric surfactant or a mixture thereof can be used.
Examples of the nonionic surfactant include polyoxyethylene alkyl ethers, polyoxyethylene alkylaryl ethers, polyoxyethylene alkylaryl ether formaldehyde condensates, polyoxyalkylene aryl ethers, polyoxyalkylene alkyl esters, polyoxyalkylene alkylsorbitol esters, polyoxyalkylene sorbitan esters, polyoxyalkylene alkylglycerol esters, polyoxyalkylene block copolymers, polyoxyalkylene block copolymer alkyl glycerol esters, polyoxyalkylene alkylsulfonamides, polyoxyalkylene rosin esters, polyoxypropylene block copolymers, polyoxyethylene oleyl ethers, polyoxyalkylene alkylphenols, alkyl glycosides, alkyl polyglycosides and polyoxyalkylene alkylpolyglycosides. These surfactants may be used singly or in a mixture of two or more thereof.
Examples of the cationic surfactant include polyoxyethylene alkylamine, polyoxypropylene alkylamine, for example, polyoxyethylene tallow amine, polyoxyethylene oleylamine, polyoxyethylene soy amine, polyoxyethylene cocoamine, synthetic polyoxyethylene alylamine, polyoxyethylen
Hayashi Masaharu
Hioki Yuichi
Kurita Kazuhiko
Suzuki Tadayuki
Birch & Stewart Kolasch & Birch, LLP
Clardy S. Mark
Kao Corporation
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