Plant protecting and regulating compositions – Plant growth regulating compositions
Reexamination Certificate
1999-04-09
2002-10-01
Pryor, Alton (Department: 1616)
Plant protecting and regulating compositions
Plant growth regulating compositions
C504S118000, C424S405000
Reexamination Certificate
active
06458745
ABSTRACT:
The present invention relates to solid crop protection compositions of one or more predominantly amorphous crop protection active ingredients which are solid per se and have solubility in water of less than 500 mg/l at 25° C. and of a coating enclosing these active ingredients.
The invention furthermore relates to methods of controlling undesirable vegetation, for controlling harmful plants and pests, and for regulating the growth of plants using the compositions according to the invention, and to a process for the preparation of the compositions according to the invention.
The starting materials for the preparation of suspensions of crop protection active ingredients which are solid per se are frequently solid—for example pulverulent or granular—formulations of the crop protection active ingredients, which are mixed with a suitable solvent, especially water. The crop protection active ingredients are predominantly in crystalline form in the solid formulations conventionally used for this purpose.
EP-A 65 193 discloses a process for coating carotenoids in which the carotenoid is dissolved, the carotenoid is precipitated in colloidal-disperse form from this solution by rapidly mixing it with an aqueous solution of a swellable colloid, and the resulting dispersion is freed from solvent and dispersant in a manner known per se.
U.S. Pat. No. 5,133,908 discloses using nanoparticles—i.e. particles with an average diameter in the nanometer range—as carriers for active ingredients and, if appropriate, drying them by means of lyophilization. Preparation is effected in a process at low temperature, low pressure and little or no stirring. As regards their stability and their properties upon use, these known products are as yet unsatisfactory in the crop protection sector.
It is an object of the present invention to provide a nanoparticulate formulation for solid crop protection active ingredients which is better suited to the preparation of liquid formulations which can be used in crop protection and which, in particular, leads to an enhanced efficacy of the crop protection active ingredients thus formulated.
The following must be mentioned as product characteristics in need of improvement:
the dissolution rate and the solubility of the compositions in the agriculturally important solvents,
reduced application rates of crop protection active ingredients,
prolonged duration of action of the formulated crop protection active ingredients,
more potent initial action of the formulated crop protection active ingredient.
We have found that this object is achieved by the compositions defined at the outset.
There have furthermore been found the methods defined at the outset in which these compositions are used.
Suitable crop protection active ingredients for the purposes of the present invention are preferably those crop protection active ingredients or mixtures of these whose solubility in water is less than 100, in particular less than 10 mg/l, in each case at a temperature of 25° C.
The crop protection active ingredients may act not only against harmful fungi and pests in agriculture and the protection of timber, but also against undesired vegetation, or they may have growth-regulatory properties.
Suitable are, specifically, the following crop protection active ingredients or mixtures of these (whose nomenclature corresponds to that in “The Pesticide Manual”, The British Crop Protection Council, 10th Edition, London, unless the efficient chemical nomenclature was used):
Fungicides:
dithiocarbamates and their derivatives, such as iron(III) dimethyldithiocarbamate, zinc bisdimethyldithiocarbamate, zinc ethylenebisdithiocarbamate, manganese ethylenebisdithiocarbamate, manganese zinc ethylenebisdithiocarbamate, tetramethylthiuram disulfide, zinc ethylenebisdithiocarbamate polymer, ammonia complex of zinc (N,N-ethylenebisdithiocarbamate), ammonia complex of zinc (N,N′-propylenebisdithiocarbamate), zinc (N,N′-propylenebisdithiocarbamate) polymer, N,N′-polypropylenebis(thiocarbamoyl)disulfide;
nitro derivatives, such as dinitro(1-methylheptyl)phenyl crotonate, 2-sec-butyl-4,6-dinitrophenyl-3,3-dimethyl acrylate, di-isopropyl 5-nitroisophthalate;
heterocyclic substances such as 2,4-dichloro-6-(o-chloranilino)-s-triazine, 2,3-dicyano-1,4-dithioanthraquinone, methyl 1-(butylcarbamoyl)-2-benzimidazolecarbamate, 2-methoxycarbonylaminobenzimidazole, 2-(2-furyl)benzimidazole, 2-(4-thiazolyl)benzimidazole, N-(1,1,2,2-tetrachloroethylthio)tetrahydrophthalimide, N-trichloromethylthio-tetrahydrophthalimide, N-trichloromethylthiophthalimide,
N-dichlorofluoromethylthio-N′,N′-dimethyl-N-phenylsulfodiamide, 5-ethoxy-3-trichloromethyl-1,2,3-thiadiazole, 2-thiocyanatomethylthiobenzothiazole, 1,4-dichloro-2,5-dimethoxybenzene, 8-hydroxyquinoline and its copper salt, 2,3-dihydro-5-carboxanilido-6-methyl-1,4-oxathiine, 2-methylfuran-3-carboxanilide, 2-methylbenzanilide, N-formyl-N-morpholine-2,2,2-trichloroethyl acetal, piperazine-1,4-diylbis(2,2,2-trichloroethyl)formamide, 2,6-dimethyl-N-tridecyl-morpholine and its salts, 2,6-dimethyl-N-cyclododecyl-morpholine and its salts, N-[3-(p-tert-butylphenyl)-2-methylpropyl]-cis-2,6-dimethyl-morpholine, 1-[2-(2,4-dichlorophenyl)-4-n-propyl-1,3-dioxolan-2-ylmethyl]-1H-1,2,4-triazole, N-(n-propyl)-N-(2,4,6-trichloro -phenoxyethyl)-N′-imidazolylurea, 1-(4-chlorophenoxy)-3,3-dimethyl-1-(1H-1,2,4-triazol-1-yl)-2-butanone, (2-chlorophenyl)-(4-chlorophenyl)-5-pyrimidinemethanol, bis-(p-chlorophenyl)-3-pyridinemethanol, 1,2-bis(3-ethoxycarbonyl-2-thioureido)benzene, 1,2-bis(3-methoxycarbonyl-2-thioureido)benzene, [2-(4-chlorophenyl)ethyl]-(1,1-dimethylethyl)-1H-1,2,4-triazol-1-ethanol, and
a variety of fungicides, such as 3-[3-(3,5-dimethyl-2-oxycyclohexyl)-2-hydroxyethyl)]glutarimide, hexachlorobenzene, methyl N-(2,6-dimethylphenyl)-N-(2-furoyl)-DL-alaninate, N-(2,6-dimethylphenyl)-N-chloracetyl-D,L-2-aminobutyrolactone, DL-N-(2,6-dimethylphenyl)-N-(phenylacetyl)alanine methyl ester, 5-methyl-5-vinyl-3-(3,5-dichlorophenyl)-2,4-dioxo-1,3-oxazolidine, 3-(3,5-dichlorophenyl)-1-isopropylcarbamoylhydantoin, N-(3,5-dichlorophenyl)-1,2-dimethylcyclopropane-1,2-dicarboximide, 1-[2-(2,4-dichlorophenyl)pentyl]-1H-1,2,4-triazole, 2,4-difluoro-&agr;-(1H-1,2,4-triazolyl-1-methyl)benzhydryl alcohol, 1-((bis-(4-fluorophenyl)methylsilyl)methyl)-1H-1,2,4-triazole,
strobilurins such as methyl E-methoximino-[a-(o-tolyloxy)-o-tolyl]-acetate, methyl E-2-{2-[6-(2-cyanophenoxy)-pyrimidin-4-yloxy]-phenyl}-3-methoxyacrylate, N-methyl E-methoximino-[&agr;-(2-phenoxyphenyl)]-acetamide, N-methyl E-methoximino-[&agr;-(2,5-dimethylphenoxy)-o-tolyl]-acetamide,
anilinopyrimidines such as N-(4,6-dimethylpyrimidin-2-yl)aniline, N-[4-methyl-6-(1-propinyl)pyrimidin-2-yl]aniline,
phenylpyrroles such as 4-(2,2-difluoro-1,3-benzodioxol-4-yl)-pyrrole-3-carbonitrile,
cinnamamides such as 3-(4-chlorophenyl)-3-(3,4-dimethoxyphenyl)acryloylmorpholine,
(+)-cis-1-(4-chlorophenyl)-2-(1H-1,2,4-triazol-1-yl)cyclo-heptanol, methyl (E)-2-{2-[6-(2-cyanophenoxy)pyrimidin-4-yloxy]phenyl}-3-methoxyacrylate and in particular the azol active ingredients N-propyl-N-[2,4,6-trichlorophenoxy)ethyl]imidazole-1-carboxamide (prochloraz), (Z)-2-(1,2,4-triazol-1-ylmethyl)-2-(4-fluorophenyl)-3-(2-chlorophenyl)oxirane (epoxiconazole), 1-butyl-1-(2,4-dichlorophenyl)-2-(1,2,4-triazol-1-yl)ethanol (hexaconazol), 1-[(2-chlorophenyl)methyl]-1-(1,1-dimethyl)-2-(1,2,4-triazol-1-yl-ethanol, 1-(4-fluorophenyl)-1-(2-fluorophenyl)-2-(1,2,4-triazol-1-yl)ethanol (flutriafol), (RS)-4-(4-chlorophenyl)-2-phenyl-2-(1H-1,2,4-triazol-1-ylmethyl)-butyronitrile, 1-[(2RS,4RS; 2RS,4SR)-4-bromo-2-(2,4-dichlorophenyl)tetrahydrofurfuryl]-1H-1,2,4-triazole, (RS)-2,2-dimethyl-3-(2-chlorobenzyl)-4-(1H-l,2,4-triazol-1-yl)butan-3-ol, bitertanol, triadimefon, triadimenol, bromuconazole, cyproconazole, difenoconazole, diniconazole, imibenconazole, propiconazole, flusilazole, tebuconazo
End Lutz
Harries Volker
Horn Dieter
Kober Reiner
Rademacher Wilhelm
BASF - Aktiengesellschaft
Keil & Weinkauf
Pryor Alton
LandOfFree
Solid phytosanitary agent does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Solid phytosanitary agent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Solid phytosanitary agent will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2974074