USRE30700E - Insecticidal compositions for ultra low volume application - Google Patents
Insecticidal compositions for ultra low volume application Download PDFInfo
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- USRE30700E USRE30700E US06/003,039 US303979A USRE30700E US RE30700 E USRE30700 E US RE30700E US 303979 A US303979 A US 303979A US RE30700 E USRE30700 E US RE30700E
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- insecticidal composition
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- Expired - Lifetime
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- 239000000203 mixture Substances 0.000 title claims abstract description 29
- 230000000749 insecticidal effect Effects 0.000 title claims description 9
- 150000002148 esters Chemical class 0.000 claims abstract description 19
- 150000004945 aromatic hydrocarbons Chemical class 0.000 claims abstract description 7
- RDYMFSUJUZBWLH-UHFFFAOYSA-N endosulfan Chemical compound C12COS(=O)OCC2C2(Cl)C(Cl)=C(Cl)C1(Cl)C2(Cl)Cl RDYMFSUJUZBWLH-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000009835 boiling Methods 0.000 claims description 10
- 150000002924 oxiranes Chemical class 0.000 claims description 8
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 7
- 125000004432 carbon atom Chemical group C* 0.000 claims description 7
- 239000007788 liquid Substances 0.000 claims description 7
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 6
- -1 phenyl epoxy-propane Chemical compound 0.000 claims description 6
- 239000011877 solvent mixture Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- IJFPVINAQGWBRJ-UHFFFAOYSA-N Diisooctyl phthalate Chemical compound CC(C)CCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCC(C)C IJFPVINAQGWBRJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000015112 vegetable and seed oil Nutrition 0.000 claims description 3
- 239000008158 vegetable oil Substances 0.000 claims description 3
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 claims description 2
- AWMVMTVKBNGEAK-UHFFFAOYSA-N Styrene oxide Chemical compound C1OC1C1=CC=CC=C1 AWMVMTVKBNGEAK-UHFFFAOYSA-N 0.000 claims description 2
- 150000004996 alkyl benzenes Chemical class 0.000 claims description 2
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims 1
- 150000004950 naphthalene Chemical class 0.000 claims 1
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 claims 1
- RDYMFSUJUZBWLH-SVWSLYAFSA-N endosulfan Chemical compound C([C@@H]12)OS(=O)OC[C@@H]1[C@]1(Cl)C(Cl)=C(Cl)[C@@]2(Cl)C1(Cl)Cl RDYMFSUJUZBWLH-SVWSLYAFSA-N 0.000 abstract description 21
- 238000009472 formulation Methods 0.000 abstract description 16
- 239000003381 stabilizer Substances 0.000 abstract description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 abstract 1
- 150000002118 epoxides Chemical class 0.000 abstract 1
- 150000002762 monocarboxylic acid derivatives Chemical class 0.000 abstract 1
- 241000196324 Embryophyta Species 0.000 description 7
- 239000013543 active substance Substances 0.000 description 7
- 239000004495 emulsifiable concentrate Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007921 spray Substances 0.000 description 4
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- WVDDGKGOMKODPV-UHFFFAOYSA-N Benzyl alcohol Chemical compound OCC1=CC=CC=C1 WVDDGKGOMKODPV-UHFFFAOYSA-N 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- WWZKQHOCKIZLMA-UHFFFAOYSA-N Caprylic acid Natural products CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- GHVNFZFCNZKVNT-UHFFFAOYSA-N Decanoic acid Natural products CCCCCCCCCC(O)=O GHVNFZFCNZKVNT-UHFFFAOYSA-N 0.000 description 2
- 241000257324 Glossina <genus> Species 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- 240000006677 Vicia faba Species 0.000 description 2
- 239000003849 aromatic solvent Substances 0.000 description 2
- QUKGYYKBILRGFE-UHFFFAOYSA-N benzyl acetate Chemical compound CC(=O)OCC1=CC=CC=C1 QUKGYYKBILRGFE-UHFFFAOYSA-N 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 description 2
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 2
- 239000000839 emulsion Substances 0.000 description 2
- SHZIWNPUGXLXDT-UHFFFAOYSA-N ethyl hexanoate Chemical compound CCCCCC(=O)OCC SHZIWNPUGXLXDT-UHFFFAOYSA-N 0.000 description 2
- HJOVHMDZYOCNQW-UHFFFAOYSA-N isophorone Chemical compound CC1=CC(=O)CC(C)(C)C1 HJOVHMDZYOCNQW-UHFFFAOYSA-N 0.000 description 2
- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- FBUKVWPVBMHYJY-UHFFFAOYSA-N nonanoic acid Chemical compound CCCCCCCCC(O)=O FBUKVWPVBMHYJY-UHFFFAOYSA-N 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 235000012424 soybean oil Nutrition 0.000 description 2
- 239000003549 soybean oil Substances 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- LRJOXARIJKBUFE-UHFFFAOYSA-N 1,2-diethyl-3-methylbenzene Chemical class CCC1=CC=CC(C)=C1CC LRJOXARIJKBUFE-UHFFFAOYSA-N 0.000 description 1
- QXQAPNSHUJORMC-UHFFFAOYSA-N 1-chloro-4-propylbenzene Chemical compound CCCC1=CC=C(Cl)C=C1 QXQAPNSHUJORMC-UHFFFAOYSA-N 0.000 description 1
- BAMWORSGQSUNSC-UHFFFAOYSA-N 1-ethyl-2,3,4-trimethylbenzene Chemical class CCC1=CC=C(C)C(C)=C1C BAMWORSGQSUNSC-UHFFFAOYSA-N 0.000 description 1
- QUBBAXISAHIDNM-UHFFFAOYSA-N 1-ethyl-2,3-dimethylbenzene Chemical class CCC1=CC=CC(C)=C1C QUBBAXISAHIDNM-UHFFFAOYSA-N 0.000 description 1
- HYFLWBNQFMXCPA-UHFFFAOYSA-N 1-ethyl-2-methylbenzene Chemical class CCC1=CC=CC=C1C HYFLWBNQFMXCPA-UHFFFAOYSA-N 0.000 description 1
- YVCOJTATJWDGEU-UHFFFAOYSA-N 2-methyl-3-phenyloxirane Chemical compound CC1OC1C1=CC=CC=C1 YVCOJTATJWDGEU-UHFFFAOYSA-N 0.000 description 1
- 239000005632 Capric acid (CAS 334-48-5) Substances 0.000 description 1
- 239000005635 Caprylic acid (CAS 124-07-2) Substances 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 239000005643 Pelargonic acid Substances 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- YGSDEFSMJLZEOE-UHFFFAOYSA-N Salicylic acid Natural products OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 1
- 241000256248 Spodoptera Species 0.000 description 1
- 235000010749 Vicia faba Nutrition 0.000 description 1
- 235000002096 Vicia faba var. equina Nutrition 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 125000002723 alicyclic group Chemical group 0.000 description 1
- 125000001931 aliphatic group Chemical group 0.000 description 1
- QPUYECUOLPXSFR-UHFFFAOYSA-N alpha-methyl-naphthalene Natural products C1=CC=C2C(C)=CC=CC2=C1 QPUYECUOLPXSFR-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid group Chemical group C(C1=CC=CC=C1)(=O)O WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 1
- 229940007550 benzyl acetate Drugs 0.000 description 1
- 235000019445 benzyl alcohol Nutrition 0.000 description 1
- QIMMUPPBPVKWKM-UHFFFAOYSA-N beta-methyl-naphthalene Natural products C1=CC=CC2=CC(C)=CC=C21 QIMMUPPBPVKWKM-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
- XCIXKGXIYUWCLL-UHFFFAOYSA-N cyclopentanol Chemical compound OC1CCCC1 XCIXKGXIYUWCLL-UHFFFAOYSA-N 0.000 description 1
- MAWOHFOSAIXURX-UHFFFAOYSA-N cyclopentylcyclopentane Chemical group C1CCCC1C1CCCC1 MAWOHFOSAIXURX-UHFFFAOYSA-N 0.000 description 1
- 150000005690 diesters Chemical class 0.000 description 1
- 150000005195 diethylbenzenes Chemical class 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 125000004494 ethyl ester group Chemical group 0.000 description 1
- BYEVBITUADOIGY-UHFFFAOYSA-N ethyl nonanoate Chemical compound CCCCCCCCC(=O)OCC BYEVBITUADOIGY-UHFFFAOYSA-N 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000002917 insecticide Substances 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- QPJVMBTYPHYUOC-UHFFFAOYSA-N methyl benzoate Chemical group COC(=O)C1=CC=CC=C1 QPJVMBTYPHYUOC-UHFFFAOYSA-N 0.000 description 1
- OSWPMRLSEDHDFF-UHFFFAOYSA-N methyl salicylate Chemical group COC(=O)C1=CC=CC=C1O OSWPMRLSEDHDFF-UHFFFAOYSA-N 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000011087 paperboard Substances 0.000 description 1
- BEZDDPMMPIDMGJ-UHFFFAOYSA-N pentamethylbenzene Chemical compound CC1=CC(C)=C(C)C(C)=C1C BEZDDPMMPIDMGJ-UHFFFAOYSA-N 0.000 description 1
- 239000003090 pesticide formulation Substances 0.000 description 1
- 231100000208 phytotoxic Toxicity 0.000 description 1
- 230000000885 phytotoxic effect Effects 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- DCKVNWZUADLDEH-UHFFFAOYSA-N sec-butyl acetate Chemical compound CCC(C)OC(C)=O DCKVNWZUADLDEH-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 150000005201 tetramethylbenzenes Chemical class 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 150000005199 trimethylbenzenes Chemical class 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000004563 wettable powder Substances 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/02—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests containing liquids as carriers, diluents or solvents
Definitions
- the present invention provides ultra low volume (ULV) formulations of endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine-3-oxide).
- Endosulfan is known as insecticide, for example for combating cotton and rice pests and also tsetse flies. It is used in the form of emulsifiable concentrates and wettable powders which, immediately prior to application, are diluted with water and then applied in the form of the spray liquors so obtained by means of spraying apparatus. Generally, from 400 to 600 l of spray liquor per ha are employed. However, this requires large amounts of water which, especially in the tropics, often are not available. Furthermore, at elevated temperature, above all in the case of application by plane, the water content of the spray mist quickly evaporates and the active substance is frequently driven off thus resulting in uneven coverage of the treated area. It was therefore desirable to develop an endosulfan formulation that is essentially free from water.
- the present invention provides such a formulation, which is in the form of an ultra low volume (ULV) concentrate.
- UUV ultra low volume
- ULV application techniques are already known. In these processes liquid active substances or solutions of active substances in application amounts of from 1 to 5 liters/ha are spread by means of special nozzles. In order to attain a good and homogeneous spreading at such small amounts, the liquids have to be applied in very small droplets of from 75 to 120 microns in diameter, that is, in a far finer distribution than in the conventional spraying of emulsifiable concentrates or wettable powders. ULV formulations therefore have to contain high-boiling solvents in order to prevent quick evaporation and drift-off of the active substance and to prevent crystallization or agglomeration already in the atomizer nozzle. The flash point (closed) of these solvents should therefore be above 55° C.
- the formulation should not be too viscous, in order to ensure a good and homogeneous atomization of the composition.
- a viscosity of up to 49 centipoises (cP) a more uniform distribution of the droplets is achieved using formulations the viscosity of which is below 20 cP.
- solid substance solvents are therefore required which possesses solubility, low volatility, low viscosity and, above all, a good plant compatibility.
- a solvent mixture consisting of 15 to 85 weight % of a liquid ester of (C 1 to C 12 ) monoalcohols with (C 2 to C 10 ) carboxylic acids, the esters containing at least 8 and, in the case of esters of a monovalent acid a maximum of 12, in the case of esters of a bivalent acid a maximum of 32 carbon atoms, and of 85 to 15 weight % of aromatic hydrocarbons having boiling ranges of from 168° to 250° C.; and
- Suitable esters are for example those of (C 6 to C 10 ) carboxylic acids such as caproic, capric, caprylic or pelargonic acid; or of aromatic carboxylic acids such as benzoic, toluylic, salicylic or phthalic acid.
- carboxylic acids such as caproic, capric, caprylic or pelargonic acid
- aromatic carboxylic acids such as benzoic, toluylic, salicylic or phthalic acid.
- alcohol components in these esters there may be used for example butanol, n-octanol, i-octanol, dodecanol, cyclopentanol, cyclohexanol, cycooctanol or benzyl alcohol.
- esters examples include benzyl acetate, caproic acid ethyl ester, pelargonic acid ethyl ester, benzoic acid methyl or ethyl ester, salicylic acid methyl, propyl or butyl ester, but above all diesters of phthalic acid with aliphatic or alicyclic (C 1 to C 12 ) alcohols, such as phthalic acid dimethyl, dibutyl, diisooctyl, didodecyl, dicyclopentyl, dicyclohexyl or dicyclooctyl ester. Because of its good plant compatibility, phthalic acid diisooctyl ester is especially preferred.
- the ester amount in the solvent mixture (b) is preferably from 40 to 80 weight %.
- the ester component may also be a mixture of several esters.
- Preferred aromatic hydrocarbons are alkyl benzenes of 9 to 11 carbon atoms, such as the various trimethylbenzenes, methyl-ethyl benzenes, dimethyl-ethyl benzenes, diethyl benzenes, tetramethyl benzenes, trimethyl-ethyl benzenes, methyl-diethyl benzenes, pentamethyl benzene or mixtures thereof; furthermore 1- and 2-methyl naphtalene.
- the following technical products which essentially consist of the above compounds are mentioned.
- the aromatic hydrocarbons are present in the solvent mixture (b) at a preferred rate of from 20 to 60 weight %.
- Suitable epoxides are for example epichlorohydrin, epoxypropane, styrene oxide, phenylepoxypropane or epoxides of unsaturated vegetable oils such as linseed oil epoxide or soy bean oil epoxide.
- epichlorohydrin is used in an amount of from 0.5 to 2 weight %.
- the ULV formulations of the invention impart an excellent insecticidal effect to endosulfan as well as a long-duration activity, so that considerable amounts of active substance are saved as compared to the known emulsion concentrates and wettable powder formulations. For this reason, they are especially useful for combating tsetse flies in remote areas, since the application intervals may be considerably extended.
- the viscosity at 20° C. of such formulations is in a range of from 8 to 18 centipoises, their flash point (closed) of from 50° to 75° C. Even under tropical conditions, the products are chemically and physically stable over two years.
- the flash point (closed) of the resulting mixtures is 72° C., its viscosity at 20° C. is 16.5 cP.
- Example 3 In comparison to a commercial emulsifiable concentrate containing 35% of endosulfan (EC) (Example 3), the ULV formulation of Example 1 was tested as to effect and activity period.
- EC endosulfan
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- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Agronomy & Crop Science (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
Ultra-low volume formulations of endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine-3-oxide), comprising endosulfan, a mixture of mono- or dicarboxylic acid (di)esters and aromatic hydrocarbons, and an epoxide stabilizer.
Description
The present invention provides ultra low volume (ULV) formulations of endosulfan (6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine-3-oxide).
Endosulfan is known as insecticide, for example for combating cotton and rice pests and also tsetse flies. It is used in the form of emulsifiable concentrates and wettable powders which, immediately prior to application, are diluted with water and then applied in the form of the spray liquors so obtained by means of spraying apparatus. Generally, from 400 to 600 l of spray liquor per ha are employed. However, this requires large amounts of water which, especially in the tropics, often are not available. Furthermore, at elevated temperature, above all in the case of application by plane, the water content of the spray mist quickly evaporates and the active substance is frequently driven off thus resulting in uneven coverage of the treated area. It was therefore desirable to develop an endosulfan formulation that is essentially free from water. The present invention provides such a formulation, which is in the form of an ultra low volume (ULV) concentrate.
ULV application techniques are already known. In these processes liquid active substances or solutions of active substances in application amounts of from 1 to 5 liters/ha are spread by means of special nozzles. In order to attain a good and homogeneous spreading at such small amounts, the liquids have to be applied in very small droplets of from 75 to 120 microns in diameter, that is, in a far finer distribution than in the conventional spraying of emulsifiable concentrates or wettable powders. ULV formulations therefore have to contain high-boiling solvents in order to prevent quick evaporation and drift-off of the active substance and to prevent crystallization or agglomeration already in the atomizer nozzle. The flash point (closed) of these solvents should therefore be above 55° C. On the other hand, the formulation should not be too viscous, in order to ensure a good and homogeneous atomization of the composition. Although it is possible to spread products having a viscosity of up to 49 centipoises (cP), a more uniform distribution of the droplets is achieved using formulations the viscosity of which is below 20 cP. For the preparation of ULV formulations of solid substance solvents are therefore required which possesses solubility, low volatility, low viscosity and, above all, a good plant compatibility.
However, the usual paraffinic hydrocarbons and vegetable oils which answer these requirements are unsuitable because of the low solubility (5 to 8%) of endosulfan in these solvents. On the other hand the aromatic solvents generally used in emulsifiable concentrates and which are relatively well tolerated by plants, such as xylene, methylethylketone or cyclohexanone have too high volatility. Finally, high-boiling aromatic hydrocarbon fractions and high-boiling ketones such as isophorone are more or less phytotoxic; the toxicity degree rising with increasing boiling point. Furthermore, when testing solutions containing such high-boiling aromatic solvents of for instance, N-methyl-pyrrolidone, and an endosulfan content of about 25 weight %, it turned out that the active substance separated rapidly in the form of coarse crystals from the atomized droplets, thus reducing the insecticidal effect. It is therefore apparent that usual technical solvents commonly used in the preparations of the pesticide formulations do not produce useful ULV formulations of endosulfan.
It has now been found that these drawbacks can be overcome and a stable, technically applicable ultra low volume (ULV) formulation of endosulfan is obtained by combining
a. 15 to 35 weight % of endosulfan;
b. 60 to 84.5 weight % of a solvent mixture consisting of 15 to 85 weight % of a liquid ester of (C1 to C12) monoalcohols with (C2 to C10) carboxylic acids, the esters containing at least 8 and, in the case of esters of a monovalent acid a maximum of 12, in the case of esters of a bivalent acid a maximum of 32 carbon atoms, and of 85 to 15 weight % of aromatic hydrocarbons having boiling ranges of from 168° to 250° C.; and
c. 0.5 to 5 weight % of an epoxide as stabilizer.
Suitable esters are for example those of (C6 to C10) carboxylic acids such as caproic, capric, caprylic or pelargonic acid; or of aromatic carboxylic acids such as benzoic, toluylic, salicylic or phthalic acid. As alcohol components in these esters, there may be used for example butanol, n-octanol, i-octanol, dodecanol, cyclopentanol, cyclohexanol, cycooctanol or benzyl alcohol. Examples of suitable esters are benzyl acetate, caproic acid ethyl ester, pelargonic acid ethyl ester, benzoic acid methyl or ethyl ester, salicylic acid methyl, propyl or butyl ester, but above all diesters of phthalic acid with aliphatic or alicyclic (C1 to C12) alcohols, such as phthalic acid dimethyl, dibutyl, diisooctyl, didodecyl, dicyclopentyl, dicyclohexyl or dicyclooctyl ester. Because of its good plant compatibility, phthalic acid diisooctyl ester is especially preferred. The ester amount in the solvent mixture (b) is preferably from 40 to 80 weight %. The ester component may also be a mixture of several esters.
Preferred aromatic hydrocarbons are alkyl benzenes of 9 to 11 carbon atoms, such as the various trimethylbenzenes, methyl-ethyl benzenes, dimethyl-ethyl benzenes, diethyl benzenes, tetramethyl benzenes, trimethyl-ethyl benzenes, methyl-diethyl benzenes, pentamethyl benzene or mixtures thereof; furthermore 1- and 2-methyl naphtalene. By way of example the following technical products which essentially consist of the above compounds are mentioned. "Shellsol AB" (Shell), boiling range 187°-213° C., "Solvesso 150" (Exxon), boiling range 183°-207° C., "Aromasol H" (ICI), boiling range 168°-200° C.
The aromatic hydrocarbons are present in the solvent mixture (b) at a preferred rate of from 20 to 60 weight %.
Suitable epoxides are for example epichlorohydrin, epoxypropane, styrene oxide, phenylepoxypropane or epoxides of unsaturated vegetable oils such as linseed oil epoxide or soy bean oil epoxide. Preferably, epichlorohydrin is used in an amount of from 0.5 to 2 weight %.
The ULV formulations of the invention impart an excellent insecticidal effect to endosulfan as well as a long-duration activity, so that considerable amounts of active substance are saved as compared to the known emulsion concentrates and wettable powder formulations. For this reason, they are especially useful for combating tsetse flies in remote areas, since the application intervals may be considerably extended. The viscosity at 20° C. of such formulations is in a range of from 8 to 18 centipoises, their flash point (closed) of from 50° to 75° C. Even under tropical conditions, the products are chemically and physically stable over two years.
The following examples illustrate the invention.
A 25% endosulfan ULV-formulation was obtained by dissolving
25 weight % of endosulfan in
19 weight % of Solvesso 150* and
55 weight % of phthalic acid diisooctyl ester, and adding
1 weight % of epichlorohydrine.
The flash point (closed) of the resulting mixtures is 72° C., its viscosity at 20° C. is 16.5 cP.
A 35% endosulfan ULV formulation (according to this invention) was obtained by dissolving as indicated above:
25 weight % of endosulfan in
29.5 weight % Solvesso 150 and
24 weight % of phthalic acid dibutyl ester and adding
1.5 weight % epoxylated soy bean oil.
(Comparative product)
As comparative product, a commercial 35% endosulfan emulsifiable concentrate was used which had the following composition:
35 weight % of endosulfan
1 weight % of epichlorohydrine
6 weight % of emulsifiers
58 weight % of xylene.
In comparison to a commercial emulsifiable concentrate containing 35% of endosulfan (EC) (Example 3), the ULV formulation of Example 1 was tested as to effect and activity period.
In a spray tower, plants of horse beans (Vicia faba) were sprayed according to the ULV process with the endosulfan 25 ULV product according to Example 1, and, for comparison, with a commercial endosulfan 35 EC emulsion according to Example 3. The plants were then kept in a moisture chamber under constant conditions (temperature 20° C., relative humidity 50-60%). The amount of product applied corresponded to a dose of 300 and 600 g of active substance/ha, respectively.
Parts of these bean plants were cut off in intervals of 1, 2, 3, 5 and 7 days and were put with the lower ends into little glass tubes filled with water. These were then placed into a paperboard cup which was covered with wire fabric, and 10 larvae of Prodenia (L 3) each (5 parallel tests) were placed onto the plant cuttings.
Examination was carried out after 3, 24, 48 and 72 hours for the plant pieces cut off the 1st day, and after 24, 48 and 72 hours for the pieces cut off later. The results of the test are apparent from the table. Concentrates according to the invention stored for 3 months at 50° C. gave the same results.
__________________________________________________________________________
Conc. of
1 day 2 days 3 days 5 days 7 days
A5 3 24
48
72
24
48 72
24
48 72
24
48 72
24
48 72
Product (g/ha)
hours hours hours hours hours
__________________________________________________________________________
Endosulfan
25 ULV(Ex. 1)
300 20*
84
90
86
86
86 82
72
72 78
70
70 68
45
49 53
35 EC(Ex. 3)
300 10
38
38
38 not tested
12
13 13
3
5 5
0
0 1
25 ULV(Ex. 1)
600 82
88
88
84
82 92 not tested
74
82 84
60
82 82
__________________________________________________________________________
*mortality
Claims (6)
1. Insecticidal compositions for ultra low volume (ULV) application which comprises
a. from 15 to 35 weight percent of 6,7,8,9,10,10-hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepine-3-oxide;
b. from 60 to 84.5 weight percent of a solvent mixture consisting of 15 to 85 weight percent of a liquid ester formed from a monoalcohol of 1 to 12 carbon atoms and a monovalent or bivalent carboxylic acid of 2 to 10 carbon atoms, said ester containing at least 8 and a maximum of 12 carbon atoms in the case of an ester of a monovalent acid and at least 8 and a maximum of 32 carbon atoms in the case of esters of a bivalent acid and from 15 to 85 weight percent of an aromatic hydrocarbon consisting essentially of an alkyl substituted benzene of 9 to 11 carbon atoms or a 1- or 2-methyl substituted naphthalene having a boiling range of from 168° to 250° C.; and
c. from 0.5 to 5 weight percent of an epoxide selected from the group consisting of epichlorohydrin, epoxypropane, styrene oxide, phenyl epoxy-propane, and an epoxide of an unsaturated vegetable oil.
2. The insecticidal composition as defined in claim 1, wherein the solvent mixture (b) contains from 40 to 80 weight percent of the liquid ester and from 20 to 60 weight percent of the aromatic hydrocarbon.
3. The insecticidal composition as defined in claim 1 which comprises a phthalic acid diester as the liquid ester.
4. The insecticidal composition as defined in claim 1 which comprises phthalic acid diisooctyl ester as the liquid ester.
5. The insecticidal composition as defined in claim 1, wherein the epoxide is epichlorohydrin.
6. The insecticidal composition as defined in claim 1, wherein the epichlorohydrin content is 0.5 to 2 percent by weight.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2364894 | 1973-12-28 | ||
| DE2364894A DE2364894C2 (en) | 1973-12-28 | 1973-12-28 | Insecticidal agent for ULV application |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/536,362 Reissue US3996375A (en) | 1973-12-28 | 1974-12-26 | Insecticidal composition for ultra low volume application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| USRE30700E true USRE30700E (en) | 1981-08-04 |
Family
ID=5902107
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/536,362 Expired - Lifetime US3996375A (en) | 1973-12-28 | 1974-12-26 | Insecticidal composition for ultra low volume application |
| US06/003,039 Expired - Lifetime USRE30700E (en) | 1973-12-28 | 1979-01-12 | Insecticidal compositions for ultra low volume application |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US05/536,362 Expired - Lifetime US3996375A (en) | 1973-12-28 | 1974-12-26 | Insecticidal composition for ultra low volume application |
Country Status (25)
| Country | Link |
|---|---|
| US (2) | US3996375A (en) |
| JP (1) | JPS5817724B2 (en) |
| AR (1) | AR209091A1 (en) |
| BE (1) | BE824002A (en) |
| BG (1) | BG24399A3 (en) |
| BR (1) | BR7410896D0 (en) |
| CA (1) | CA1033293A (en) |
| CH (1) | CH608689A5 (en) |
| CY (1) | CY934A (en) |
| DE (1) | DE2364894C2 (en) |
| EG (1) | EG11744A (en) |
| FR (1) | FR2255852B1 (en) |
| GB (1) | GB1437840A (en) |
| IL (1) | IL46324A (en) |
| IT (1) | IT1053791B (en) |
| KE (1) | KE2789A (en) |
| MW (1) | MW5174A1 (en) |
| MX (1) | MX3480E (en) |
| MY (1) | MY7800115A (en) |
| NL (1) | NL7416783A (en) |
| OA (1) | OA04951A (en) |
| SU (1) | SU578827A3 (en) |
| TR (1) | TR19993A (en) |
| ZA (1) | ZA748154B (en) |
| ZM (1) | ZM17474A1 (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0003251B1 (en) * | 1977-12-20 | 1984-08-22 | Imperial Chemical Industries Plc | Insecticidal formulations and process for their preparation |
| GB2119653A (en) * | 1982-05-17 | 1983-11-23 | Ici Plc | Pesticidal compositions |
| US4776882A (en) * | 1982-12-27 | 1988-10-11 | Rhone Poulenc Nederlands B.V. | Concentrated basal spray |
| DE3609919A1 (en) * | 1986-03-24 | 1987-10-01 | Hoechst Ag | INSECTICIDE AGENT BASED ON THE ACTIVE SUBSTANCE ENDOSULFANE |
| DE4406629A1 (en) * | 1994-03-01 | 1995-09-07 | Hoechst Schering Agrevo Gmbh | Aqueous suspension concentrates of endosulfan |
| US5906983A (en) * | 1997-08-20 | 1999-05-25 | The Clorox Company | High fructose containing insecticide compositions and methods of using the same |
| US6117854A (en) * | 1997-08-20 | 2000-09-12 | The Clorox Company | Enhanced performance insecticide compositions containing plant derived oil carriers and methods of using the same |
| AU3154601A (en) | 1999-11-18 | 2001-05-30 | Basf Aktiengesellschaft | Non-aqueous concentrated spreading oil composition |
| AUPR158400A0 (en) * | 2000-11-20 | 2000-12-14 | Commonwealth Scientific And Industrial Research Organisation | Improved method and insecticide formulation for reducing insect pests and infestation in agriculture |
| US6482863B2 (en) | 2000-12-15 | 2002-11-19 | S. C. Johnson & Son, Inc. | Insect repellant formulation deliverable by piezoelectric device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2166500A (en) * | 1936-12-19 | 1939-07-18 | Standard Oil Co California | Parasiticidal spray oil composition |
| US3060085A (en) * | 1959-06-19 | 1962-10-23 | Hoechst Ag | Extermination of undesired fishes |
| US3499911A (en) * | 1967-06-01 | 1970-03-10 | Hooker Chemical Corp | Stabilization of a cyclic sulfite and composition |
| US3776857A (en) * | 1971-09-24 | 1973-12-04 | Witco Chemical Corp | Water-in-oil emulsions |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL201837A (en) * | 1955-12-19 | |||
| DE1767970B1 (en) * | 1968-07-06 | 1971-02-04 | Hoechst Ag | Pest repellants |
| DE1937634C3 (en) * | 1968-07-30 | 1980-10-30 | N.V. Philips' Gloeilampenfabrieken, Eindhoven (Niederlande) | Single phase pesticide liquid with reduced phytotoxicity |
| NL6917222A (en) * | 1969-11-14 | 1971-05-18 |
-
1973
- 1973-12-28 DE DE2364894A patent/DE2364894C2/en not_active Expired
-
1974
- 1974-12-16 MX MX001410U patent/MX3480E/en unknown
- 1974-12-21 EG EG584/74A patent/EG11744A/en active
- 1974-12-23 ZA ZA00748154A patent/ZA748154B/en unknown
- 1974-12-23 CY CY934A patent/CY934A/en unknown
- 1974-12-23 BG BG028530A patent/BG24399A3/en unknown
- 1974-12-23 IL IL46324A patent/IL46324A/en unknown
- 1974-12-23 GB GB5552374A patent/GB1437840A/en not_active Expired
- 1974-12-23 CH CH7417170A patent/CH608689A5/xx not_active IP Right Cessation
- 1974-12-23 NL NL7416783A patent/NL7416783A/en not_active Application Discontinuation
- 1974-12-26 SU SU7402088198A patent/SU578827A3/en active
- 1974-12-26 AR AR257075A patent/AR209091A1/en active
- 1974-12-26 US US05/536,362 patent/US3996375A/en not_active Expired - Lifetime
- 1974-12-27 CA CA217,006A patent/CA1033293A/en not_active Expired
- 1974-12-27 MW MW51/74*UA patent/MW5174A1/en unknown
- 1974-12-27 ZM ZM174/74A patent/ZM17474A1/en unknown
- 1974-12-27 OA OA55377A patent/OA04951A/en unknown
- 1974-12-27 IT IT31069/74A patent/IT1053791B/en active
- 1974-12-27 JP JP49149065A patent/JPS5817724B2/en not_active Expired
- 1974-12-27 BR BR10896/74A patent/BR7410896D0/en unknown
- 1974-12-30 FR FR7443282A patent/FR2255852B1/fr not_active Expired
- 1974-12-30 BE BE152058A patent/BE824002A/en unknown
-
1977
- 1977-11-07 KE KE2789A patent/KE2789A/en unknown
-
1978
- 1978-12-30 MY MY115/78A patent/MY7800115A/en unknown
-
1979
- 1979-01-12 US US06/003,039 patent/USRE30700E/en not_active Expired - Lifetime
-
1980
- 1980-04-07 TR TR19993A patent/TR19993A/en unknown
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2166500A (en) * | 1936-12-19 | 1939-07-18 | Standard Oil Co California | Parasiticidal spray oil composition |
| US3060085A (en) * | 1959-06-19 | 1962-10-23 | Hoechst Ag | Extermination of undesired fishes |
| US3499911A (en) * | 1967-06-01 | 1970-03-10 | Hooker Chemical Corp | Stabilization of a cyclic sulfite and composition |
| US3776857A (en) * | 1971-09-24 | 1973-12-04 | Witco Chemical Corp | Water-in-oil emulsions |
Non-Patent Citations (2)
| Title |
|---|
| Chemical Abstracts 59:5716g (1963). * |
| Chemical Abstracts 74:124002z (1971). * |
Also Published As
| Publication number | Publication date |
|---|---|
| IT1053791B (en) | 1981-10-10 |
| ZM17474A1 (en) | 1975-09-22 |
| AU7676774A (en) | 1976-06-24 |
| US3996375A (en) | 1976-12-07 |
| FR2255852B1 (en) | 1978-07-07 |
| DE2364894A1 (en) | 1975-12-11 |
| MY7800115A (en) | 1978-12-31 |
| AR209091A1 (en) | 1977-03-31 |
| OA04951A (en) | 1980-10-31 |
| JPS5095425A (en) | 1975-07-29 |
| NL7416783A (en) | 1975-07-01 |
| ZA748154B (en) | 1976-01-28 |
| KE2789A (en) | 1977-12-09 |
| TR19993A (en) | 1980-07-01 |
| IL46324A0 (en) | 1975-03-13 |
| IL46324A (en) | 1978-03-10 |
| MW5174A1 (en) | 1975-08-13 |
| JPS5817724B2 (en) | 1983-04-09 |
| GB1437840A (en) | 1976-06-03 |
| DE2364894C2 (en) | 1984-11-22 |
| SU578827A3 (en) | 1977-10-30 |
| MX3480E (en) | 1980-12-15 |
| CY934A (en) | 1978-06-23 |
| CH608689A5 (en) | 1979-01-31 |
| CA1033293A (en) | 1978-06-20 |
| FR2255852A1 (en) | 1975-07-25 |
| BE824002A (en) | 1975-06-30 |
| BG24399A3 (en) | 1978-02-10 |
| EG11744A (en) | 1977-12-31 |
| BR7410896D0 (en) | 1975-09-02 |
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