ITVA20110040A1 - Concentrati acquosi di adiuvanti con migliori proprieta' di dispersione dello spray - Google Patents
Concentrati acquosi di adiuvanti con migliori proprieta' di dispersione dello spray Download PDFInfo
- Publication number
- ITVA20110040A1 ITVA20110040A1 IT000040A ITVA20110040A ITVA20110040A1 IT VA20110040 A1 ITVA20110040 A1 IT VA20110040A1 IT 000040 A IT000040 A IT 000040A IT VA20110040 A ITVA20110040 A IT VA20110040A IT VA20110040 A1 ITVA20110040 A1 IT VA20110040A1
- Authority
- IT
- Italy
- Prior art keywords
- weight
- hydroxypropyl guar
- acid
- acetate
- hydroxypropyl
- Prior art date
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- 239000012141 concentrate Substances 0.000 title claims description 40
- 239000006185 dispersion Substances 0.000 title claims description 17
- -1 hydroxypropyl Chemical group 0.000 claims description 60
- 239000000203 mixture Substances 0.000 claims description 41
- 239000002671 adjuvant Substances 0.000 claims description 36
- 239000007921 spray Substances 0.000 claims description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000009472 formulation Methods 0.000 claims description 22
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 20
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 20
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 20
- 230000002363 herbicidal effect Effects 0.000 claims description 20
- 239000004009 herbicide Substances 0.000 claims description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 claims description 17
- 125000000217 alkyl group Chemical group 0.000 claims description 17
- 239000001166 ammonium sulphate Substances 0.000 claims description 17
- 125000000129 anionic group Chemical group 0.000 claims description 12
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical group OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000005562 Glyphosate Substances 0.000 claims description 10
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 9
- 125000004432 carbon atom Chemical group C* 0.000 claims description 8
- 229940097068 glyphosate Drugs 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 6
- 238000006467 substitution reaction Methods 0.000 claims description 6
- 125000002252 acyl group Chemical group 0.000 claims description 5
- 125000001931 aliphatic group Chemical group 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical group CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 4
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000008103 glucose Substances 0.000 claims description 4
- 125000004430 oxygen atom Chemical group O* 0.000 claims description 4
- HHLFWLYXYJOTON-UHFFFAOYSA-N glyoxylic acid Chemical compound OC(=O)C=O HHLFWLYXYJOTON-UHFFFAOYSA-N 0.000 claims description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical compound OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 claims description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 claims description 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 claims description 2
- 150000001720 carbohydrates Chemical class 0.000 claims description 2
- 230000032050 esterification Effects 0.000 claims description 2
- 238000005886 esterification reaction Methods 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- 239000001630 malic acid Substances 0.000 claims description 2
- 235000011090 malic acid Nutrition 0.000 claims description 2
- 238000006384 oligomerization reaction Methods 0.000 claims description 2
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 claims description 2
- 239000011975 tartaric acid Substances 0.000 claims description 2
- 235000002906 tartaric acid Nutrition 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- 244000007835 Cyamopsis tetragonoloba Species 0.000 claims 12
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims 1
- 150000001735 carboxylic acids Chemical class 0.000 claims 1
- 244000303965 Cyamopsis psoralioides Species 0.000 description 35
- 239000003795 chemical substances by application Substances 0.000 description 16
- 239000003905 agrochemical Substances 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000000725 suspension Substances 0.000 description 7
- 239000008367 deionised water Substances 0.000 description 6
- 229910021641 deionized water Inorganic materials 0.000 description 6
- 239000003337 fertilizer Substances 0.000 description 6
- 239000004615 ingredient Substances 0.000 description 6
- 238000002360 preparation method Methods 0.000 description 6
- 239000004094 surface-active agent Substances 0.000 description 6
- DAGDLSRRQJATCV-UHFFFAOYSA-N 1-(2-bromoethoxy)-2-propan-2-ylbenzene Chemical compound CC(C)C1=CC=CC=C1OCCBr DAGDLSRRQJATCV-UHFFFAOYSA-N 0.000 description 5
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 5
- 239000000654 additive Substances 0.000 description 5
- AIMMSOZBPYFASU-UHFFFAOYSA-N n-(4,6-dimethoxypyrimidin-2-yl)-n'-[3-(2,2,2-trifluoroethoxy)pyridin-1-ium-2-yl]sulfonylcarbamimidate Chemical compound COC1=CC(OC)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CN=2)OCC(F)(F)F)=N1 AIMMSOZBPYFASU-UHFFFAOYSA-N 0.000 description 5
- 239000003960 organic solvent Substances 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 238000000151 deposition Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 229910052708 sodium Inorganic materials 0.000 description 4
- 239000000375 suspending agent Substances 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- IANUJLZYFUDJIH-UHFFFAOYSA-N flufenacet Chemical compound C=1C=C(F)C=CC=1N(C(C)C)C(=O)COC1=NN=C(C(F)(F)F)S1 IANUJLZYFUDJIH-UHFFFAOYSA-N 0.000 description 3
- 238000005191 phase separation Methods 0.000 description 3
- 229920002401 polyacrylamide Polymers 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- OMDQUFIYNPYJFM-XKDAHURESA-N (2r,3r,4s,5r,6s)-2-(hydroxymethyl)-6-[[(2r,3s,4r,5s,6r)-4,5,6-trihydroxy-3-[(2s,3s,4s,5s,6r)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyoxan-2-yl]methoxy]oxane-3,4,5-triol Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@@H]1OC[C@@H]1[C@@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)[C@H](O)[C@H](O)[C@H](O)O1 OMDQUFIYNPYJFM-XKDAHURESA-N 0.000 description 2
- WVQBLGZPHOPPFO-LBPRGKRZSA-N (S)-metolachlor Chemical compound CCC1=CC=CC(C)=C1N([C@@H](C)COC)C(=O)CCl WVQBLGZPHOPPFO-LBPRGKRZSA-N 0.000 description 2
- BXKKQFGRMSOANI-UHFFFAOYSA-N 1-methoxy-3-[4-[(2-methoxy-2,4,4-trimethyl-3h-chromen-7-yl)oxy]phenyl]-1-methylurea Chemical compound C1=CC(NC(=O)N(C)OC)=CC=C1OC1=CC=C2C(C)(C)CC(C)(OC)OC2=C1 BXKKQFGRMSOANI-UHFFFAOYSA-N 0.000 description 2
- QOPBEBWGSGFROG-UHFFFAOYSA-N 2-(1h-indol-2-yl)acetic acid Chemical compound C1=CC=C2NC(CC(=O)O)=CC2=C1 QOPBEBWGSGFROG-UHFFFAOYSA-N 0.000 description 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 description 2
- IAJOBQBIJHVGMQ-UHFFFAOYSA-N 2-amino-4-[hydroxy(methyl)phosphoryl]butanoic acid Chemical compound CP(O)(=O)CCC(N)C(O)=O IAJOBQBIJHVGMQ-UHFFFAOYSA-N 0.000 description 2
- WVQBLGZPHOPPFO-UHFFFAOYSA-N 2-chloro-N-(2-ethyl-6-methylphenyl)-N-(1-methoxypropan-2-yl)acetamide Chemical compound CCC1=CC=CC(C)=C1N(C(C)COC)C(=O)CCl WVQBLGZPHOPPFO-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000005494 Chlorotoluron Substances 0.000 description 2
- 239000005630 Diquat Substances 0.000 description 2
- 241000196324 Embryophyta Species 0.000 description 2
- LGDSHSYDSCRFAB-UHFFFAOYSA-N Methyl isothiocyanate Chemical compound CN=C=S LGDSHSYDSCRFAB-UHFFFAOYSA-N 0.000 description 2
- 239000005581 Metobromuron Substances 0.000 description 2
- WLFDQEVORAMCIM-UHFFFAOYSA-N Metobromuron Chemical compound CON(C)C(=O)NC1=CC=C(Br)C=C1 WLFDQEVORAMCIM-UHFFFAOYSA-N 0.000 description 2
- 239000005582 Metosulam Substances 0.000 description 2
- VGHPMIFEKOFHHQ-UHFFFAOYSA-N Metosulam Chemical compound N1=C2N=C(OC)C=C(OC)N2N=C1S(=O)(=O)NC1=C(Cl)C=CC(C)=C1Cl VGHPMIFEKOFHHQ-UHFFFAOYSA-N 0.000 description 2
- 239000005583 Metribuzin Substances 0.000 description 2
- IHHMUBRVTJMLQO-UHFFFAOYSA-N Pyraclonil Chemical compound C#CCN(C)C1=C(C#N)C=NN1C1=NN(CCCC2)C2=C1Cl IHHMUBRVTJMLQO-UHFFFAOYSA-N 0.000 description 2
- 239000005617 S-Metolachlor Substances 0.000 description 2
- XJCLWVXTCRQIDI-UHFFFAOYSA-N Sulfallate Chemical compound CCN(CC)C(=S)SCC(Cl)=C XJCLWVXTCRQIDI-UHFFFAOYSA-N 0.000 description 2
- PNRAZZZISDRWMV-UHFFFAOYSA-N Terbucarb Chemical compound CNC(=O)OC1=C(C(C)(C)C)C=C(C)C=C1C(C)(C)C PNRAZZZISDRWMV-UHFFFAOYSA-N 0.000 description 2
- 239000012345 acetylating agent Substances 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- LFVGISIMTYGQHF-UHFFFAOYSA-N ammonium dihydrogen phosphate Chemical compound [NH4+].OP(O)([O-])=O LFVGISIMTYGQHF-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- ZEKANFGSDXODPD-UHFFFAOYSA-O carboxymethyl(phosphonomethyl)azanium;propan-2-amine Chemical compound CC(C)[NH3+].OC(=O)CNCP(O)(O)=O ZEKANFGSDXODPD-UHFFFAOYSA-O 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- JXCGFZXSOMJFOA-UHFFFAOYSA-N chlorotoluron Chemical compound CN(C)C(=O)NC1=CC=C(C)C(Cl)=C1 JXCGFZXSOMJFOA-UHFFFAOYSA-N 0.000 description 2
- MZZBPDKVEFVLFF-UHFFFAOYSA-N cyanazine Chemical compound CCNC1=NC(Cl)=NC(NC(C)(C)C#N)=N1 MZZBPDKVEFVLFF-UHFFFAOYSA-N 0.000 description 2
- MWKFXSUHUHTGQN-UHFFFAOYSA-N decan-1-ol Chemical compound CCCCCCCCCCO MWKFXSUHUHTGQN-UHFFFAOYSA-N 0.000 description 2
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- 238000001879 gelation Methods 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- RUCAXVJJQQJZGU-UHFFFAOYSA-M hydron;2-(phosphonatomethylamino)acetate;trimethylsulfanium Chemical compound C[S+](C)C.OP(O)(=O)CNCC([O-])=O RUCAXVJJQQJZGU-UHFFFAOYSA-M 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- DSRNRYQBBJQVCW-UHFFFAOYSA-N metoxuron Chemical compound COC1=CC=C(NC(=O)N(C)C)C=C1Cl DSRNRYQBBJQVCW-UHFFFAOYSA-N 0.000 description 2
- FOXFZRUHNHCZPX-UHFFFAOYSA-N metribuzin Chemical compound CSC1=NN=C(C(C)(C)C)C(=O)N1N FOXFZRUHNHCZPX-UHFFFAOYSA-N 0.000 description 2
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- YXIIPOGUBVYZIW-UHFFFAOYSA-N pyraflufen Chemical compound ClC1=C(OC(F)F)N(C)N=C1C1=CC(OCC(O)=O)=C(Cl)C=C1F YXIIPOGUBVYZIW-UHFFFAOYSA-N 0.000 description 2
- ASRAWSBMDXVNLX-UHFFFAOYSA-N pyrazolynate Chemical compound C=1C=C(Cl)C=C(Cl)C=1C(=O)C=1C(C)=NN(C)C=1OS(=O)(=O)C1=CC=C(C)C=C1 ASRAWSBMDXVNLX-UHFFFAOYSA-N 0.000 description 2
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- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 2
- YNJBWRMUSHSURL-UHFFFAOYSA-N trichloroacetic acid Chemical compound OC(=O)C(Cl)(Cl)Cl YNJBWRMUSHSURL-UHFFFAOYSA-N 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- ZXCBTCBNCGLDCD-UHFFFAOYSA-N (1-ethoxy-3-methyl-1-oxobut-3-en-2-yl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate Chemical compound C1=C([N+]([O-])=O)C(C(=O)OC(C(=O)OCC)C(C)=C)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 ZXCBTCBNCGLDCD-UHFFFAOYSA-N 0.000 description 1
- YNWVFADWVLCOPU-MDWZMJQESA-N (1E)-1-(4-chlorophenyl)-4,4-dimethyl-2-(1H-1,2,4-triazol-1-yl)pent-1-en-3-ol Chemical compound C1=NC=NN1/C(C(O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1 YNWVFADWVLCOPU-MDWZMJQESA-N 0.000 description 1
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- IPPAUTOBDWNELX-UHFFFAOYSA-N (2-ethoxy-2-oxoethyl) 5-[2-chloro-4-(trifluoromethyl)phenoxy]-2-nitrobenzoate Chemical group C1=C([N+]([O-])=O)C(C(=O)OCC(=O)OCC)=CC(OC=2C(=CC(=CC=2)C(F)(F)F)Cl)=C1 IPPAUTOBDWNELX-UHFFFAOYSA-N 0.000 description 1
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- ISEUFVQQFVOBCY-UHFFFAOYSA-N prometon Chemical compound COC1=NC(NC(C)C)=NC(NC(C)C)=N1 ISEUFVQQFVOBCY-UHFFFAOYSA-N 0.000 description 1
- AAEVYOVXGOFMJO-UHFFFAOYSA-N prometryn Chemical compound CSC1=NC(NC(C)C)=NC(NC(C)C)=N1 AAEVYOVXGOFMJO-UHFFFAOYSA-N 0.000 description 1
- MFOUDYKPLGXPGO-UHFFFAOYSA-N propachlor Chemical compound ClCC(=O)N(C(C)C)C1=CC=CC=C1 MFOUDYKPLGXPGO-UHFFFAOYSA-N 0.000 description 1
- IKVXBIIHQGXQRQ-CYBMUJFWSA-N propan-2-yl (2r)-2-(n-benzoyl-3-chloro-4-fluoroanilino)propanoate Chemical group C=1C=C(F)C(Cl)=CC=1N([C@H](C)C(=O)OC(C)C)C(=O)C1=CC=CC=C1 IKVXBIIHQGXQRQ-CYBMUJFWSA-N 0.000 description 1
- OYJMHAFVOZPIOY-UHFFFAOYSA-N propan-2-yl 2-chloro-5-[3-methyl-2,6-dioxo-4-(trifluoromethyl)pyrimidin-1-yl]benzoate Chemical compound C1=C(Cl)C(C(=O)OC(C)C)=CC(N2C(N(C)C(=CC2=O)C(F)(F)F)=O)=C1 OYJMHAFVOZPIOY-UHFFFAOYSA-N 0.000 description 1
- FKLQIONHGSFYJY-UHFFFAOYSA-N propan-2-yl 5-[4-bromo-1-methyl-5-(trifluoromethyl)pyrazol-3-yl]-2-chloro-4-fluorobenzoate Chemical compound C1=C(Cl)C(C(=O)OC(C)C)=CC(C=2C(=C(N(C)N=2)C(F)(F)F)Br)=C1F FKLQIONHGSFYJY-UHFFFAOYSA-N 0.000 description 1
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- DWSPRBSLSXQIEJ-UHFFFAOYSA-N pyrasulfotole Chemical compound CC1=NN(C)C(O)=C1C(=O)C1=CC=C(C(F)(F)F)C=C1S(C)(=O)=O DWSPRBSLSXQIEJ-UHFFFAOYSA-N 0.000 description 1
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- DEIKMOQTJBGGAX-DJKKODMXSA-N pyriminobac Chemical compound CO\N=C(/C)C1=CC=CC(OC=2N=C(OC)C=C(OC)N=2)=C1C(O)=O DEIKMOQTJBGGAX-DJKKODMXSA-N 0.000 description 1
- USSIUIGPBLPCDF-KEBDBYFISA-N pyriminobac-methyl Chemical group CO\N=C(/C)C1=CC=CC(OC=2N=C(OC)C=C(OC)N=2)=C1C(=O)OC USSIUIGPBLPCDF-KEBDBYFISA-N 0.000 description 1
- FFSSWMQPCJRCRV-UHFFFAOYSA-N quinclorac Chemical compound ClC1=CN=C2C(C(=O)O)=C(Cl)C=CC2=C1 FFSSWMQPCJRCRV-UHFFFAOYSA-N 0.000 description 1
- ALZOLUNSQWINIR-UHFFFAOYSA-N quinmerac Chemical compound OC(=O)C1=C(Cl)C=CC2=CC(C)=CN=C21 ALZOLUNSQWINIR-UHFFFAOYSA-N 0.000 description 1
- BACHBFVBHLGWSL-JTQLQIEISA-N rac-diclofop methyl Natural products C1=CC(O[C@@H](C)C(=O)OC)=CC=C1OC1=CC=C(Cl)C=C1Cl BACHBFVBHLGWSL-JTQLQIEISA-N 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- MEFOUWRMVYJCQC-UHFFFAOYSA-N rimsulfuron Chemical compound CCS(=O)(=O)C1=CC=CN=C1S(=O)(=O)NC(=O)NC1=NC(OC)=CC(OC)=N1 MEFOUWRMVYJCQC-UHFFFAOYSA-N 0.000 description 1
- GNHDVXLWBQYPJE-UHFFFAOYSA-N saflufenacil Chemical compound C1=C(Cl)C(C(=O)NS(=O)(=O)N(C)C(C)C)=CC(N2C(N(C)C(=CC2=O)C(F)(F)F)=O)=C1F GNHDVXLWBQYPJE-UHFFFAOYSA-N 0.000 description 1
- ODCWYMIRDDJXKW-UHFFFAOYSA-N simazine Chemical compound CCNC1=NC(Cl)=NC(NCC)=N1 ODCWYMIRDDJXKW-UHFFFAOYSA-N 0.000 description 1
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- DEWVPZYHFVYXMZ-QCILGFJPSA-M sodium;(3ar,4as,8ar,8bs)-2,2,7,7-tetramethyl-4a,5,8a,8b-tetrahydro-[1,3]dioxolo[3,4]furo[1,3-d][1,3]dioxine-3a-carboxylate Chemical compound [Na+].O([C@H]12)C(C)(C)OC[C@@H]1O[C@]1(C([O-])=O)[C@H]2OC(C)(C)O1 DEWVPZYHFVYXMZ-QCILGFJPSA-M 0.000 description 1
- JKPSVOHVUGMYGH-UHFFFAOYSA-M sodium;(4,6-dimethoxypyrimidin-2-yl)-[[3-methoxycarbonyl-6-(trifluoromethyl)pyridin-2-yl]sulfonylcarbamoyl]azanide Chemical compound [Na+].COC(=O)C1=CC=C(C(F)(F)F)N=C1S(=O)(=O)NC(=O)[N-]C1=NC(OC)=CC(OC)=N1 JKPSVOHVUGMYGH-UHFFFAOYSA-M 0.000 description 1
- DHJHUXNTNSRSEX-UHFFFAOYSA-M sodium;2-(4-chloro-2-methylphenoxy)propanoate Chemical compound [Na+].[O-]C(=O)C(C)OC1=CC=C(Cl)C=C1C DHJHUXNTNSRSEX-UHFFFAOYSA-M 0.000 description 1
- JUNDBKFAZXZKRA-MAFYXNADSA-M sodium;2-[(e)-n-[(3,5-difluorophenyl)carbamoylamino]-c-methylcarbonimidoyl]pyridine-3-carboxylate Chemical compound [Na+].N=1C=CC=C(C([O-])=O)C=1C(/C)=N/NC(=O)NC1=CC(F)=CC(F)=C1 JUNDBKFAZXZKRA-MAFYXNADSA-M 0.000 description 1
- AXKBOWBNOCUNJL-UHFFFAOYSA-M sodium;2-nitrophenolate Chemical compound [Na+].[O-]C1=CC=CC=C1[N+]([O-])=O AXKBOWBNOCUNJL-UHFFFAOYSA-M 0.000 description 1
- 230000007928 solubilization Effects 0.000 description 1
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- PQTBTIFWAXVEPB-UHFFFAOYSA-N sulcotrione Chemical compound ClC1=CC(S(=O)(=O)C)=CC=C1C(=O)C1C(=O)CCCC1=O PQTBTIFWAXVEPB-UHFFFAOYSA-N 0.000 description 1
- OORLZFUTLGXMEF-UHFFFAOYSA-N sulfentrazone Chemical compound O=C1N(C(F)F)C(C)=NN1C1=CC(NS(C)(=O)=O)=C(Cl)C=C1Cl OORLZFUTLGXMEF-UHFFFAOYSA-N 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- RJKCKKDSSSRYCB-UHFFFAOYSA-N tebutam Chemical compound CC(C)(C)C(=O)N(C(C)C)CC1=CC=CC=C1 RJKCKKDSSSRYCB-UHFFFAOYSA-N 0.000 description 1
- XQTLDIFVVHJORV-UHFFFAOYSA-N tecnazene Chemical compound [O-][N+](=O)C1=C(Cl)C(Cl)=CC(Cl)=C1Cl XQTLDIFVVHJORV-UHFFFAOYSA-N 0.000 description 1
- IUQAXCIUEPFPSF-UHFFFAOYSA-N tembotrione Chemical compound ClC1=C(COCC(F)(F)F)C(S(=O)(=O)C)=CC=C1C(=O)C1C(=O)CCCC1=O IUQAXCIUEPFPSF-UHFFFAOYSA-N 0.000 description 1
- BCQMBFHBDZVHKU-UHFFFAOYSA-N terbumeton Chemical compound CCNC1=NC(NC(C)(C)C)=NC(OC)=N1 BCQMBFHBDZVHKU-UHFFFAOYSA-N 0.000 description 1
- IROINLKCQGIITA-UHFFFAOYSA-N terbutryn Chemical compound CCNC1=NC(NC(C)(C)C)=NC(SC)=N1 IROINLKCQGIITA-UHFFFAOYSA-N 0.000 description 1
- FZXISNSWEXTPMF-UHFFFAOYSA-N terbutylazine Chemical compound CCNC1=NC(Cl)=NC(NC(C)(C)C)=N1 FZXISNSWEXTPMF-UHFFFAOYSA-N 0.000 description 1
- 230000000930 thermomechanical effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- IYMLUHWAJFXAQP-UHFFFAOYSA-N topramezone Chemical compound CC1=C(C(=O)C2=C(N(C)N=C2)O)C=CC(S(C)(=O)=O)=C1C1=NOCC1 IYMLUHWAJFXAQP-UHFFFAOYSA-N 0.000 description 1
- DQFPEYARZIQXRM-LTGZKZEYSA-N tralkoxydim Chemical compound C1C(=O)C(C(/CC)=N/OCC)=C(O)CC1C1=C(C)C=C(C)C=C1C DQFPEYARZIQXRM-LTGZKZEYSA-N 0.000 description 1
- XOPFESVZMSQIKC-UHFFFAOYSA-N triasulfuron Chemical compound COC1=NC(C)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CC=2)OCCCl)=N1 XOPFESVZMSQIKC-UHFFFAOYSA-N 0.000 description 1
- BQZXUHDXIARLEO-UHFFFAOYSA-N tribenuron Chemical compound COC1=NC(C)=NC(N(C)C(=O)NS(=O)(=O)C=2C(=CC=CC=2)C(O)=O)=N1 BQZXUHDXIARLEO-UHFFFAOYSA-N 0.000 description 1
- YMXOXAPKZDWXLY-QWRGUYRKSA-N tribenuron methyl Chemical group COC(=O)[C@H]1CCCC[C@@H]1S(=O)(=O)NC(=O)N(C)C1=NC(C)=NC(OC)=N1 YMXOXAPKZDWXLY-QWRGUYRKSA-N 0.000 description 1
- REEQLXCGVXDJSQ-UHFFFAOYSA-N trichlopyr Chemical compound OC(=O)COC1=NC(Cl)=C(Cl)C=C1Cl REEQLXCGVXDJSQ-UHFFFAOYSA-N 0.000 description 1
- DFFWZNDCNBOKDI-UHFFFAOYSA-N trinexapac Chemical compound O=C1CC(C(=O)O)CC(=O)C1=C(O)C1CC1 DFFWZNDCNBOKDI-UHFFFAOYSA-N 0.000 description 1
- RVKCCVTVZORVGD-UHFFFAOYSA-N trinexapac-ethyl Chemical group O=C1CC(C(=O)OCC)CC(=O)C1=C(O)C1CC1 RVKCCVTVZORVGD-UHFFFAOYSA-N 0.000 description 1
- KVEQCVKVIFQSGC-UHFFFAOYSA-N tritosulfuron Chemical compound FC(F)(F)C1=NC(OC)=NC(NC(=O)NS(=O)(=O)C=2C(=CC=CC=2)C(F)(F)F)=N1 KVEQCVKVIFQSGC-UHFFFAOYSA-N 0.000 description 1
- YNWVFADWVLCOPU-MAUPQMMJSA-N uniconazole P Chemical compound C1=NC=NN1/C([C@@H](O)C(C)(C)C)=C/C1=CC=C(Cl)C=C1 YNWVFADWVLCOPU-MAUPQMMJSA-N 0.000 description 1
- 125000004417 unsaturated alkyl group Chemical group 0.000 description 1
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- 238000009736 wetting Methods 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
- A01N57/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds
- A01N57/18—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds
- A01N57/20—Biocides, pest repellants or attractants, or plant growth regulators containing organic phosphorus compounds having phosphorus-to-carbon bonds containing acyclic or cycloaliphatic radicals
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- 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
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Description
Descrizione
CONCENTRATI ACQUOSI DI ADIUVANTI CON MIGLIORI PROPRIETA’ DI
DISPERSIONE DELLO SPRAY
SETTORE TECNICO
L'invenzione si riferisce a un metodo per la preparazione di un concentrato acquoso di adiuvanti con migliorate proprietà di controllo della dispersione dello spray comprendente idrossipropil guar o idrossipropil guar acetato, solfato di ammonio ed esteri anionici di alchil poliglicosidi.
La presente invenzione si riferisce inoltre a concentrati acquosi stabili di adiuvanti, preparati con il metodo sopra descritto.
L'invenzione si riferisce inoltre a formulazioni spray diluite erbicide stabili contenenti i concentrati acquosi di adiuvanti di cui sopra ed almeno un erbicida.
STATO DELL'ARTE
Molti prodotti agrochimici conosciuti hanno dimostrato di essere più efficaci in combinazione rispetto a quando vengono applicati individualmente.
Gli erbicidi, e in particolare il glifosato, sono spruzzati di solito in combinazione con adiuvanti organici (ad esempio tensioattivi che agiscono da agenti bagnanti e adesivi) e adiuvanti inorganici (ad esempio fertilizzanti contenenti azoto inorganico, quali l’ammonio solfato). La presenza di additivi vari garantisce una buona fitoattività ed evita effetti dannosi e/o imprevedibili causati dalle situazioni locali (durezza dell'acqua, qualità del suolo, condizioni meteorologiche, etc).
Esempi di documenti che descrivono combinazioni di adiuvanti sono US 6,852,674, US 6,479,437, EP 0584227, EP 498145, US RE36,149 e WO 2010/100039.
Nel corso del tempo sono stati ideati vari sistemi per un dosaggio corretto di prodotti agrochimici, come gli erbicidi, su terreni, coltivazioni, piante, etc, ad esempio pompe spray che spruzzano formulazioni agrochimiche diluite (tank mix) da un opportuno ugello sul terreno o sulle colture, o apparati più complessi che sono progettati per dosare formulazioni agrochimiche concentrate direttamente nella pompa e miscelarle con l’acqua subito prima dell’applicazione.
Per l’applicazione a spruzzo di prodotti agrochimici à ̈ necessario aggiungere agenti di controllo della dispersione (anti-deriva o anti-drift) al fine di impedire la formazione di goccioline fini, che potrebbero essere trasportate al di fuori dell’area destinata ad essere trattata. Senza l'uso di agenti anti-drift, la applicazione a spruzzo potrebbe risultare inadeguata, prima di tutto perché si potrebbe verificare un trattamento insufficiente dei terreni e delle colture da proteggere e in secondo luogo perché lo spray anomalo, se trasportato oltre la zona di trattamento, potrebbe essere dannosa per altre colture, per terreni e corsi d'acqua vicini.
Tipici agenti di controllo della deriva sono polimeri sintetici o naturali come poliacrilammidi, polietilene ossidi, polivinil pirrolidoni, guar e derivati di guar. In particolare nel settore agricolo, le poliacrilammidi, il guar e i suoi derivati sono gli additivi standard per il controllo della dispersione.
Solitamente l’agente anti-drift viene aggiunto direttamente nelle formulazioni agrochimiche diluite per l'applicazione a spruzzo (tankmix). In alternativa, l’agente anti-drift viene sciolto nell’acqua che alimenta le pompe spray oppure viene introdotto direttamente nelle pompe spray, di solito in corrispondenza o subito dopo la zona in cui si miscela l'acqua con gli erbicidi, pesticidi o fertilizzanti concentrati. E' importante che la sostanza chimica anti-drift venga correttamente dosata e ben sciolta per garantire che non si formino spray anomali a causa di un sotto-dosaggio o di un sovra-dosaggio e per garantire che l'angolo di spruzzo non sia troppo stretto con conseguente distribuzione non uniforme dell’attivo agrochimico.
Tuttavia, esiste il problema, comune a tutte queste procedure, che polimeri, quali poliacrilammidi, guar e derivati di guar, possono essere difficili da attivare in campo e quando in forma di polvere impiegano molto tempo a dissolversi. Questo può portare alla formazione di particelle di gel in grado di bloccare filtri e gli ugelli in linea, con conseguente aumento di pressione nel sistema e spray non uniformi.
Una buona soluzione a questo problema potrebbe essere sciogliere/disperdere una quantità adeguata di agenti anti-drift direttamente nei prodotti agrochimici concentrati. Tuttavia, à ̈ molto difficile sciogliere/disperdere una quantità sufficiente di polimero nei concentrati e/o ottenere soluzioni/dispersioni stabili per raggiungere un controllo adeguato della deriva dello spray in tutti i casi possibili. Inoltre, i tipi di agenti anti-drift polimerici saranno limitati solo a quelli che sono facilmente solubili/disperdibili in quantità tale da fornire adeguate caratteristiche anti-drift.
E' ben noto nell'arte che à ̈ possibile preparare sospensioni/dispersioni stabili di polisaccaridi in soluzioni concentrate di elettroliti, quali solfati, nitrati e fosfati di ammonio o di metalli alcalini. Queste sospensioni/ dispersioni sono descritte per esempio in US 4,971,728, US 4,272,414 e US 6,322,726, ma nessuno di questi brevetto descrive una composizione adiuvante contenente anche una elevata quantità di tensioattivo(i).
Sospensioni/dispersioni di polisaccaridi in soluzioni di elettroliti e tensioattivi sono descritte in US 4,883,537, US 5,898,072, EP 413274 e US 2011/0054042, ma queste composizioni richiedono l'uso di adiuvanti al fine stabilizzare la sospensione/dispersione. Adiuvanti di sospensione solitamente sono agenti sospensivanti, come argille, silice pirogenica o addensanti polimerici, o solventi organici solubili in acqua.
US 2011/0054042, per esempio, descrive composizioni contenenti solfato di ammonio in concentrazione pari a circa il 25-30 % in peso, HPG ad una concentrazione intorno a 2-6% in peso e alchil betaine in presenza di un agente sospensivante, tipicamente silice pirogenica, e/o solventi organici solubili in acqua.
US 6,364,926 a sua volta descrive composizioni concentrate di adiuvanti liquide composte, in peso di composizione: a) da circa 25% a circa 35% di un composto contenente azoto sotto forma di un sale d'ammonio; b) da circa 0,1% a circa 5% di un tensioattivo anfolitico, c) da circa 0,1% a circa 2,5% di un agente di controllo della deriva/adiuvante di deposizione (idrossipropil guar), e d), da circa 55% a circa 75% di un veicolo. In questa composizione concentrata di adiuvanti sono presenti sia fertilizzanti e tensioattivi, ma la concentrazione dell’agente di controllo della deriva à ̈ piuttosto bassa e non consente forti diluizioni dei concentrati.
Ora abbiamo scoperto un metodo specifico che permette la preparazione di concentrati acquosi stabili di adiuvanti, che comprendono fino al 10% in peso di un idrossipropil guar (HPG) o di un idrossipropil guar acetato (HPGAc) come agenti anti-deriva, dal 33 al 40% in peso di solfato di ammonio e fino al 10% in peso di esteri anionici di alchil poliglicosidi. Questi concentrati contengono quindi quantità elevate di adiuvanti disciolti, sono omogenei, stabili, non richiedono l'uso di agenti sospensivanti o di un solvente organico solubile in acqua e possono essere utilizzati per preparare facilmente in campo formulazioni spray erbicide diluite, in particolare formulazioni di glifosato (glyphosate), che possiedono ottime caratteristiche anti-drift.
Nella presente invenzione "sospensione" e "dispersione" sono usati in modo intercambiabile per indicare un sistema in cui sono disperse particelle solide (generalmente HPG o HPGAc) in un liquido (generalmente una soluzione acquosa di sale)
DESCRIZIONE DEI DISEGNI
Fig. 1. Schema dell’apparecchio per i test di deriva dello spray.
RIASSUNTO DELLA INVENZIONE
E' quindi un oggetto della presente invenzione un metodo di preparazione di un concentrato acquoso di adiuvanti comprendente da 33 a 40% in peso di solfato di ammonio, da 1 a 10% in peso di esteri anionici di alchil poliglicosidi e dal 2 al 10% in peso di idrossipropil guar o di idrossipropil guar acetato che comprende i seguenti stadi: i) dissolvere da 15 a 30 % in peso, sul peso del concentrato finale, di solfato di ammonio in acqua; ii) aggiungere alla soluzione da 1 a 10 % in peso, sul peso del concentrato finale, di esteri anionici di alchil poliglicosidi; iii) disperdere nella soluzione da 2 a 10 %, sul peso del concentrato finale, preferibilmente da 3 a 7% in peso, sul peso del concentrato finale, di idrossipropil guar o di idrossipropil guar acetato; iiii) aggiungere alla dispersione solfato di ammonio per arrivare a una concentrazione finale di solfato di ammonio compresa tra 33 e 40 % in peso.
E' un altro oggetto della presente invenzione un concentrato acquoso di adiuvanti comprendente da 33 a 40 % in peso di solfato di ammonio, da 1 a 10 % in peso di esteri anionici di alchil poliglicosidi e da 2 a 10 % in peso di idrossipropil guar o di idrossipropil guar acetato.
E’ un ulteriore oggetto della presente invenzione una formulazione erbicida spray comprendente da 0,01 a 5 % in peso di almeno un erbicida e il concentrato acquoso di adiuvanti sopra descritto in una quantità tale da avere nella formulazione stessa una concentrazione di idrossipropil guar o di idrossipropil guar acetato compresa tra 0,05 e 0,4% in peso. DESCRIZIONE DETTAGLIATA DELLA INVENZIONE
Nel metodo secondo la presente invenzione, il solfato di ammonio e il tensioattivo, ed eventualmente altri additivi, possono essere sciolti in acqua utilizzando una apparecchiatura comune. La stessa apparecchiatura può essere utilizzata per sospendere i derivati di guar nella soluzione salina ottenuta e per dissolvere il rimanente solfato di ammonio. Per la preparazione del concentrato acquoso di adiuvanti dell'invenzione non occorrono attrezzature particolari o speciali.
Il concentrato acquoso di adiuvanti dell’inevnzione à ̈ stabile; con il termine "stabile" si intende che non si verificano separazioni di fase o precipitazioni o gelificazioni, anche in condizioni ambientali difficili, come ad esempio temperature elevate (>40 °C) o basse (<10 °C) per almeno una settimana dopo la preparazione.
La stabilità delle sospensioni di questa invenzione può essere ulteriormente migliorata preparando la dispersione sotto vuoto, in modo da rimuovere l'aria intrappolata.
Tipicamente il concentrato adiuvante acquoso dell'invenzione comprende almeno il 35% in peso, preferibilmente da 40 a 60% in peso, di acqua. Preferibilmente l’acqua viene aggiunta in un’unica aliquota nello stadio i). Gli esteri anionici di alchil poliglicosidi utilizzabili per la realizzazione della presente invenzione sono composti rappresentati dalla seguente formula (I), [RO-(G)x]n-(D)y, dove R à ̈ un gruppo alchilico alifatico, saturo o insaturo, lineare o ramificato, con da 6 a 20 atomi di carbonio, preferibilmente da 8 a 16 atomi di carbonio; G à ̈ un residuo di un saccaride riducente, preferibilmente di glucosio, collegato a RO per mezzo di un legame etereo O-glicosidico; O à ̈ un atomo di ossigeno; D à ̈ un residuo acilico collegato ad un atomo di ossigeno di G e derivato da un acido bicarbossilico o policarbossilico avente una catena alifatica con da 2 a 8 atomi di carbonio, lineare o ramificata, satura o insatura, non sostituita o sostituita con uno o più gruppi ossidrilici o un gruppo solfonato, e in cui almeno un gruppo carbossilico à ̈ salificato o sotto forma di acido; n à ̈ un numero compreso tra 1 e m-1, dove m à ̈ il numero di gruppi carbossilici nell’acido che dà origine a D; x à ̈ un numero da 1 a 10, che rappresenta il grado medio di oligomerizzazione di G; y à ̈ un numero da 1 a 10 che rappresenta il grado medio di esterificazione.
Gli esteri anionici di alchil poliglicosidi di formula (I) di cui sopra sono noti e possono essere preparati come descritto, per esempio, in EP 258814, EP 510564 o EP 510565.
In una forma di realizzazione preferita di questa invenzione nella formula (I) R à ̈ un gruppo alchilico alifatico, saturo o insaturo, lineare o ramificato, con da 8 a 16 atomi di carbonio, G à ̈ il glucosio, x à ̈ compreso tra 1,0 e 2,5 e D à ̈ il residuo acilico di un acido carbossilico selezionato nel gruppo composto da acido citrico, acido tartarico, acido maleico, acido malico e acido solfosuccinico.
Gli esteri anionici di alchil poliglucosidi della formula (I) in cui R à ̈ un gruppo alchilico avente da 8 a 16 atomi di carbonio, G à ̈ il glucosio, x à ̈ compreso tra 1,0 e 2,5 e D à ̈ il residuo acilico dell’acido citrico (esteri citrici di C8-C16alchil poliglucosidi) hanno dato i migliori risultati in termini di stabilità della composizione.
L'idrossipropil guar acetato o l’idrossipropil guar utilizzabili come agenti anti-drift nella presente invenzione possono essere preparati utilizzando una delle procedure ben note all'esperto nell’arte.
La "gomma di guar" o semplicemente "guar" Ã ̈ un galattomannano ottenuto dal trattamento termo-meccanico dei semi della "Cyamopsis Tetragonolobus", una leguminosa coltivata nelle regioni semi-secche dei paesi tropicali, in particolare in India e in Pakistan.
Gli idrossipropil guar si ottengono per reazione chimica dei gruppi ossidrilici della catena di galattomannano con ossido di propilene, in presenza di un catalizzatore alcalino (ad esempio l'idrossido di sodio). Nei processi noti per la produzione di idrossipropil guar, questa reazione viene effettuata in una miscela acqua-solvente in cui il solvente à ̈ tipicamente un alcool, come descritto, per esempio, in US 3,326,890, US 3,723,409 etc.
Per la preparazione dell’acetil derivato, prima o dopo l’idrossipropilazione, viene aggiunto un agente acetilante nella miscela di reazione alcalina. Questo agente acetilante può essere, per esempio, anidride acetica, cloruro di acetile o acido acetico.
Tutti idrossipropil guar (acetato) comunemente utilizzati nel settore possono essere dispersa nel concentrato acquoso di adiuvanti dell'invenzione. Semplificando, gli HPG disponibili in commercio appartengono a due categorie: prodotti grezzi, cioà ̈ prodotti che contengono ancora i sottoprodotti generati durante la loro preparazione chimica (glicoli, poliglicoli, sali inorganici/organici) e prodotti purificati. Gli idrossipropil guar purificati possiedono una maggiore percentuale di principio attivo rispetto ai prodotti grezzi e, ovviamente, esibiscono migliori caratteristiche addensanti e reologiche.
Per questo motivo, dopo la neutralizzazione, l'HPG o l’HPGAc dell'invenzione possono essere purificati mediante lavaggio con acqua, un solvente organico o una miscela di entrambi, di solito in presenza di un agente reticolante quali acido borico e suoi sali, o gliossale. Al termine del processo i derivati di guar sono di solito essiccati e recuperati con mezzi noti nell'arte.
In una forma di realizzazione preferita l'HPG dell'invenzione ha una sostituzione molare idrossipropilica compresa tra 0,1 e 3,0, preferibilmente tra 0,2 a 1,3 e più preferibilmente tra 0,2 e 0,7. L’espressione "sostituzione molare idrossipropilica" (MS) indica il numero medio di moli di gruppi idrossipropilici per ogni unità anidroglicosidica del guar e può essere misurata tramite<1>H-NMR.
In un'altra forma di realizzazione preferita l'idrossipropil guar acetato dell'invenzione ha una sostituzione molare idrossipropilica compresa tra 0,1 e 1,0 e contiene in media da 0,001 a 0,15, preferibilmente da 0,005 a 0,05, gruppi acetati per unità anidroglicosidica (DS).
L'HPG o HPGAc utili per la presente invenzione hanno viscosità Brookfield® RVT a 20 °C, 20 rpm e 1% in acqua compresa tra 500 e 10.000 mPa*s, di preferenza tra i 1.000 e 5.000 mPa*s.
Nella forma di realizzazione più preferita l’agente anti-drift dell'invenzione à ̈ un idrossipropil guar gliossalato con MS compreso tra 0,2 e 0,7 e una viscosità Brookfield® RVT a 20 ° C, 20 rpm, 1% in acqua di da 1500 a 3500 mPa*s.
Altri fertilizzanti contenenti azoto possono essere presenti nella composizione dell'invenzione.
Esempi di fertilizzanti adatti sono soluzioni acquose di ammoniaca, nitrato di ammonio, bisolfato di ammonio, cloruro di ammonio, acetato di ammonio, formiato di ammonio, ossalato di ammonio, carbonato di ammonio, bicarbonato di ammonio, tiosolfato di ammonio, fosfato di ammonio, fosfato di ammonio bibasico, fosfato di ammonio monobasico, fosfato acido di ammonio e sodio, tiocianato di ammonio, urea e tiourea, e miscele di questi, e anche soluzioni di nitrato di ammonio/urea (soluzioni UAN o AHL). Questi fertilizzanti sono preferibilmente aggiunto nello stadio iiii) dopo l'HPG/HPGAc.
Eventualmente, il concentrato di adiuvanti può includere anche umettanti, inibitori di corrosione, inibitori microbici, regolatori di pH, antischiuma o miscele degli stessi. Questi additivi ulteriori possono essere aggiunti in qualsiasi momento, ma sono preferibilmente aggiunti dopo il solfato di ammonio e prima dell’HPG/HPGAc.
I concentrati acquosi di adiuvanti dell'invenzione sono versabili, stabili, e possono essere conservati per lungo tempo senza un deposito o precipitazione di componenti in forma solida dalla composizione, nonostante la grande quantità di solfato di ammonio e tensioattivi che essi contengono; vantaggiosamente, essi non comprendono nessun agente sospensivante o solvente organico solubile in acqua, ad eccezione di idrossipropil guar acetato o idrossipropil guar.
Le formulazioni erbicide spray secondo l'invenzione sono diluite e si ottengono aggiungendo i concentrati di adiuvanti a erbicidi formulati, o viceversa, e eventualmente acqua per diluire il tutto alla concentrazione desiderata al fine di ottenere una formulazione acquosa che possa essere spruzzata direttamente sui campi.
In alternativa, gli erbicidi formulati e/o i concentrati di adiuvanti possono essere prima diluiti e poi miscelati.
Il termine "diluito" Ã ̈ utilizzato nel presente documento con riferimento al contenuto in attivo erbicida compreso tra 0,001 e 5% in peso.
Dette formulazioni erbicide spray comprendono composti erbicidi attivi, quali Acetochlor, Acibenzolar, Acibenzolar-S-methyl, Acifluorfen, Acifluorfen-sodium, Aclonifen, Alachlor, Allidochlor, Alloxydinn, Alloxydinnsodium, Ametryn, Amicarbazone, Amidochlor, Amidosulfuron, Aminocyclopyrachlor, Aminopyralid, Amitrole, Ammonium sulfamat, Ancymidol, Anilofos, Asulam, Atrazina, Azafenidin, Azimsulfuron, Aziprotryn, Beflubutamid, Benazolin, Benazolin-ethyl, Bencarbazone, Benfluralin, Benfuresate, Bensulide, Bensulfuron, Bensulfuron-methyl, Bentazone, Benzfendizone, Benzobicyclon, Benzofenap, Benzofluor, Benzoylprop, Bicyclopyrone, Bifenox, Bispyribac, Bispyribac-sodium, Bromacil, Bromobutide, Bromofenoxim, Bromoxynil, Bromuron, Buminafos, Busoxinone, Butachlor, Butafenacil, Butamifos, Butenachlor, Butralin , Butroxydim , Butylate, Cafenstrole, Carbetamide, Carfentrazone, Carfentrazone-ethyl, Chlomethoxyfen, Chloramben, Chlorazifop, Chlorazifop-butyl, Chlorbromuron , Chlorbufam , Chlorfenac, Chlorfenac-sodium, Chlorfenprop, Chlorflurenol, Chlorflurenol-methyl, Chloridazon, Chlorimuron, Chlorimuron-ethyl, Chlormequat-chloride, Chlornitrofen, Chlorophthalim, Chlorthal-dimethyl, Chlorotoluron, Chlorsulfuron, Cinidon, Cinidon-ethyl, Cinmethylin, Cinosulfuron, Clethodim (C10), Clodinafop, Clodinafop-propargyl, Clofencet, Clomazone, Clomeprop, Cloprop, Clopyralid (C1), Cloransulam, Cloransulam-methyl, Cumyluron, Cyanamide, Cyanazine, Cyclanilide, Cycloate, Cyclosulfamuron, Cycloxydim (C11), Cycluron, Cyhalofop, Cyhalofopbutyl, Cyperquat, Cyprazine, Cyprazole, 2,4-D, 2,4-DB, Dalapon, Daminozide, Dazomet, n-Decanol, Desmedipham, Desmetryn, Detosyl-Pyrazolate (DTP), Diallate, Dicamba, Dichlobenil, Dichlorprop, Dichlorprop-P, Diclofop, Diclofop-methyl, Diclofop-P-methyl, Diclosulam, Diethatyl, Diethatyl-ethyl, Difenoxuron, Difenzoquat, Diflufenican, Diflufenzopyr, Diflufenzopyr-sodium, Dimefuron, Dikegulac-sodium, Dimefuron, Dimepiperate, Dimethachlor (C2), Dimethametryn, Dimethenamid, Dimethenamid-P, Dimethipin, Dimetrasulfuron, Dinitramine, Dinoseb, Dinoterb, Diphenamid, Dipropetryn, Diquat, Diquatdibromide, Dithiopyr, Diuron, DNOC, Eglinazine-ethyl, Endothal, EPTC, Esprocarb, Ethalfluralin, Ethametsulfuron, Ethametsulfuron-methyl, Ethephon, Ethidimuron, Ethiozin, Ethofumesate, Ethoxyfen, Ethoxyfenethyl, Ethoxysulfuron, Etobenzanid, F-5331, d.h. N-[2-Cloro-4-fluoro-5-[4-(3-fluoropropil)-4,5-diidro-5-oxo-1H-tetrazol-1-il]-fenil]-etan sulfonamide, F-7967, d.h. 3-[7-Cloro-5-fluoro-2-(trifluorometil)-1H-benzimidazol-4-il]-1-metil-6-(trifluormetil)pirimidin-2,4(1H,3H)-dione, Fenoprop, Fenoxaprop, Fenoxaprop-P, Fenoxaprop-ethyl, Fenoxaprop-P-ethyl (C3), Fenoxasulfone, Fentrazamide, Fenuron, Flamprop, Flamprop-M-isopropyl, Flamprop-M-methyl, Flazasulfuron, Florasulam, Fluazifop, Fluazifop-P, Fluazifop-butyl, Fluazifop-P-butyl, Fluazolate, Flucarbazone, Flucarbazone-sodium, Flucetosulfuron, Fluchloralin, Flufenacet (Thiafluamide), Flufenpyr, Flufenpyr-ethyl, Flumetralin, Flumetsulam, Flumiclorac, Flumiclorac-pentyl, Flumioxazin, Flumipropyn, Fluometuron, Fluorodifen, Fluoroglycofen, Fluoroglycofen-ethyl, Flupoxam, Flupropacil, Flupropanate, Flupyrsulfuron, Flupyrsulfuron-methyl-sodium, Flurenol, Flurenol-butyl, Fluridone, Flurochloridone, Fluroxypyr, Fluroxypyr-meptyl, Flurprimidol, Flurtamone, Fluthiacet, Fluthiacet-methyl, Fluthiamide, Fomesafen, Foramsulfuron, Forchlorfenuron, Fosamine, Furyloxyfen, Glufosinate, Glufosinate ammonium, Glyphosate, Glyphosatediammonium, Glyphosate-isopropylammonium, Glyphosate-potassium, H-9201 , d.h. O-(2,4-Dimetil-6-nitrofenyl)-O-etil-isopropil fosforamidotioato, Halosafen , Halosulfuron , Halosulfuron-methyl, Haloxyfop, Haloxyfop-p (C4), Haloxyfop-ethoxyethyl, Haloxyfop-P-ethoxyethyl, Haloxyfop-methyl, Haloxyfop-P-methyl, Hexazinone, HW-02, d.h. 1-(Dimetossifosforil)-etil(2,4-diclorofenossi)acetato, Imazamethabenz, Imazamethabenzmethyl, Imazamox (C9), Imazamox-ammonium, Imazapic, Imazapyr, Imazapyr-isopropylammonium, Imazaquin, Imazaquin-ammonium, Imazethapyr, Imazethapyr-ammonium, Imazosulfuron, Inabenfide, Indanofan, Indaziflam, Acido Indolacetico (IAA), acido 4-lndol-3-ilbutirrico (IBA), lodosulfuron, lodosulfuron-methyl-sodium, loxynil, Ipfencarbazone, Isocarbamid, Isopropalin, Isoproturon, Isouron, Isoxaben, Isoxachlortole, Isoxaflutole, Isoxapyrifop, KUH-043, d.h. 3-({[5-(Difluorometil)-1-metil-3-(trifluorometil)-1H-pirazol-4-il]metil} sulfonil)-5,5-dimetil-4,5-diidro-1,2-ossazolo, Karbutilate, Ketospiradox, Lactofen, Lenacil, Linuron, MCPA, MCPB, MCPB-methyl, -ethyl e -sodium, Mecoprop, Mecoprop-sodium, Mecoprop-butotyl, Mecoprop-P-butotyl, Mecoprop-P-dimethylammoniunn, Mecoprop-P-2-ethylhexyl, Mecoprop-P-potassium, Mefenacet, Mefluidide, Mepiquat-chlorid, Mesosulfuron, Mesosulfuron-methyl, Mesosulfuron-methyl-Na, Mesotrione, Methabenzthiazuron, Metam, Metamifop, Metamitron, Metazachlor (C5), Metazasulfuron, Methazole, Methiopyrsulfuron, Methiozolin, Methoxyphenone, Methyldymron, 1-Methylcyclopropen, Methylisothiocyanat, Metobenzuron, Metobromuron, Metolachlor, S-Metolachlor, Metosulam, Metoxuron, Metribuzin, Metsulfuron, Metsulfuronmethyl, Molinate, Monalide, Monocarbamide, Monocarbamidedihydrogensulfat, Monolinuron, Monosulfuron, Monosulfuron-ester, Monuron, MT-128, d.h. 6-Cloro-N-[(2E)-3-cloroprop-2-en-1-il]-5-metil-Nfenilpiridazin-3-amina, MT-5950, d.h. N-[3-Cloro-4-(1-metiletil)-fenil]-2-metilpentanamide, NGGC-011, Naproanilide, Napropamide (C6), Naptalam, NC-310, d.h.4-(2,4-Diclorobenzoil)-1-metil-5-benzil ossipirazolo, Neburon, Nicosulfuron, Nipyraclofen, Nitralin, Nitrofen, Nitrophenolat-sodium (miscela isomerica), Nitrofluorfen, Nonansäure, Norflurazon, Orbencarb, Orthosulfamuron, Oryzalin, Oxadiargyl, Oxadiazon, Oxasulfuron, Oxaziclomefone, Oxyfluorfen, Paclobutrazol, Paraquat, Paraquat-dichlorid, , Pendimethalin, Pendralin, Penoxsulam, Pentanochlor, Pentoxazone, Perfluidone, Pethoxamid, Phenisopham, Phenmedipham, Phenmedipham-ethyl, Picloram, Picolinafen, Pinoxaden, Piperophos, Pirifenop, Pirifenop-butyl, Pretilachlor, Primisulfuron, Primisulfuron-methyl, Probenazole, Profluazol, Procyazine, Prodiamine, Prifluraline, Profoxydim, Prohexadione, Prohexadione-calcium, Prohydrojasmone, Prometon, Prometryn, Propachlor, Propanil , Propaquizafop, Propazine, Propham , Propisochlor, Propoxycarbazone, Propoxycarbazone-sodium, Propyrisulfuron, Propyzamide, Prosulfalin, Prosulfocarb, Prosulfuron, Prynachlor, Pyraclonil, Pyraflufen, Pyraflufenethyl, Pyrasulfotole, Pyrazolynate (Pyrazolate), Pyrazosulfuron, Pyrazosulfuron-ethyl, Pyrazoxyfen, Pyribambenz, Pyribambenz-isopropyl, Pyribambenz-propyl, Pyribenzoxim, Pyributicarb, Pyridafol, Pyridate (C7), Pyriftalid, Pyriminobac, Pyriminobac-methyl, Pyrimisulfan, Pyrithiobac, Pyrithiobac-sodium, Pyroxasulfone, Pyroxsulam, Quinclorac, Quinmerac, Quinoclamine, Quizalofop, Quizalofop-ethyl, Quizalofop-P, Quizalofop-P-ethyl, Quizalofop-P-tefuryl, Rimsulfuron, Saflufenacil, Secbumeton, Sethoxydim, Siduron, Simazine, Simetryn , SN-106279, d.h. Metil-(2R) -2-({7-[2-cloro-4-(trifluorometil)fenossi]-2-naftil}ossi) propanoato, Sulcotrione, Sulfallate (CDEC), Sulfentrazone, Sulfonneturon, Sulfonneturon-methyl, Sulfosate (Glyphosate-trimesium), Sulfosulfuron, SYN-523, SYP-249, d.h. 1 -Etossi-3-metil-1 -oxobut-3-en-2-il-5-[2-cloro-4-(trifluorometil)fenossi]-2-nitrobenzoato, SYP-300, d .h.1 -[7-Fluoro-3-oxo-4-(prop-2-in-1-il)-3,4-diidro-2H-1,4-benzoxazin-6-il]-3-propil-2-tioxoimidazolidin-4,5-dione, Tebutam, Tebuthiuron, Tecnazene, Tefuryltrione, Tembotrione, Tepraloxydim, Terbacil, Terbucarb, Terbuchlor, Terbumeton, Terbuthylazine, Terbutryn, Thenylchlor, Thiafluamide, Thiazafluron, Thiazopyr, Thidiazimin, Thidiazuron, Thiencarbazone, Thiencarbazone-methyl, Thifensulfuron, Thifensulfuronmethyl, Thiobencarb, Tiocarbazil, Topramezone, Tralkoxydim, Triallate, Triasulfuron, Triaziflam, Triazofenamide, Tribenuron, Tribenuron-methyl, Acido Tricloroacetico (TCA), Triclopyr, Tridiphane, Trietazine, Trifloxysulfuron, Trifloxysulfuron-sodium, Trifluralin (C8), Triflusulfuron, Triflusulfuron-methyl , Trimeturon, Trinexapac, Trinexapac-ethyl, Tritosulfuron, Tsitodef, Uniconazole, Uniconazole-P, Vernolate, ZJ-0862, d.h.3,4-Dicloro-N-{2-[(4,6-dimetossipirimidin-2-il)ossi]benzil}anilina o loro miscele.
I concentrati di adiuvanti della presente invenzione sono particolarmente adatte per la preparazione di formulazioni spray di N-(fosfonometil) glicina (glyphosate) e suoi sali, e, preferibilmente, per il sale di isopropilammonio di N-(fosfonometil) glicina (isopropylammonium glyphosate).
Nelle formulazioni erbicide spray diluite possono essere aggiunti come partner altri ingredienti biologicamente attivi, come altri pesticidi, fitoregolatori, alghicidi, fungicidi, battericidi, viricidi, insetticidi, acaricidi e nematocidi.
Le formulazioni spray erbicide diluite dell'invenzione possono inoltre comprendere altri additivi convenzionali, tra cui addensanti, fluidificanti, agenti bagnanti, tamponi, lubrificanti, filler, agenti depositanti, ritardanti di evaporazione, antigelo, agenti odorosi per attirare gli insetti, agenti per la protezione dagli UV, profumi, antischiuma e così via.
Le dosi di applicazione dipenderanno dalle erbacce da controllare e il grado di controllo desiderato. In generale, le formulazioni erbicide di questa invenzione sono più efficaci se impiegate con una dose di da 0,001 a 22,4 chilogrammi per ettaro dei principi attivi, preferibilmente da 0,01 a 16,8 Kg per ettaro.
Grazie alla presenza degli esteri anionici di alchil poliglicosidi , il solfato di ammonio non precipita, quando altri materiali, come l'erbicida, vengono aggiunti e, allo stesso tempo, l'attività biologica del diserbante à ̈ ulteriormente aumentata.
Le formulazioni erbicide diluite spray secondo l'invenzione forniscono un effetto anti-drift ottimale e una corretta deposizione delle gocce, e hanno anche un'elevata stabilità allo stoccaggio e non tendono a occludere gli ugelli.
Gli esempi che seguono servono ad illustrare la stabilità dei concentrati di adiuvanti acquosi secondo l'invenzione.
ESEMPI
Esempi 1-31
Diverse quantità di solfato di ammonio (AMS 1, vedi Tabelle 1-5) sono stati sciolte in acqua deionizzata a temperatura ambiente sotto agitazione. Dopo completa solubilizzazione sono stati aggiunti DEFOMEX 2033 N, un agente antischiuma, e poi Emulson AGE/CE/UP, un alchil poliglucoside citrato, entrambi commercializzati da Lamberti SpA.
La miscela à ̈ stata mantenuta sotto agitazione meccanica fino alla completa dissoluzione, poi sono stati aggiunti un idrossipropil guar gliossilato (HPG1, MS 0,3, viscosità Brookfield® RVT pari a 2500 mPa*s in acqua, 1% in acqua, 20 °C e 20 rpm) oppure un idrossipropil guar acetato (HPGAc1, MS (idrossipropile) 0,4, DS (acetato) 0,015 e viscosità Brookfield® RVT pari a 2270 mPa*s, 1% in acqua, 20 °C e 20 rpm).
I concentrati secondo l’invenzione e quelli degli Esempi comparativi 12, 17, 18 e 25 sono stati completati con l'aggiunta finale, in piccole aliquote, di altro solfato di ammonio (AMS 2).
Le Tabelle 1-5 riportano la quantità in grammi degli ingredienti utilizzati nonché l'aspetto e la stabilità a differenti temperature delle dispersioni finali.
Tabella 1
Ingrediente Esempio Esempio Esempio Esempio Esempio Esempio 1* 2* 3 4 5* 6 Acqua deionizzata 54.0 54.0 54.0 54.0 46 52 AMS 1 15.0 34.0 30.0 25.0 40 30 DEFOMEX 2033 N 1.0 1.0 1.0. 1.0. 1 1 EMULSON AGE/EC/UP 6.0 6.0 6.0 6.0 6 6 HPG1 5.0 5.0 5.0 5.0 7 7 AMS 2 - - 4.0 9.0 - 4 Aspetto Troppo Separ. Dispers. Dispers. Separ. Dispers.
Viscoso di Fase Omog. Omog. di Fase Omog. Stabilità 54 °C 15 gg. n.d. n.d. Stabile Stabile n.d. Stabile
Stabilità 4 °C 7 gg. n.d. n.d. Stabile Stabile n.d. Stabile *comparativo
n.d. non determinato
Tabella 2
Ingrediente Esempio Esempio Esempio Esempio Esempio Esempio 7 8 9 10 11 12* Acqua deionizzata 46 52 52 46 46 46 AMS 1 30 25 20 20 15 10 Defomex 2033 N 1 1 1 1 1 1 Eucarol AGE/EC/UP 6 6 6 6 6 6 HPG1 7 7 7 7 7 7 AMS 2 10 9 14 20 25 30 Aspetto Dispers. Dispers. Dispers. Dispers. Dispers. Troppo Omog. Omog. Omog. Omog. Omog. Viscoso Stabilità 54 °C 15 gg. Stabile Stabile Stabile Stabile Stabile n.d. Stabilità 4 °C 7 gg. Stabile Stabile Stabile Stabile Stabile n.d. *comparativo
n.d. non determinato
Tabella 3
Ingrediente Esempio Esempio Esempio Esempio Esempio Esempio 13* 14* 15 16 17* 18* Acqua deionizzata<50 56 56 50 56 50>AMS 140 34 20 15 10 10 Defomex 2033 N<1 1 1 1 1 1>Eucarol AGE/EC/UP<6 6 6 6 6 6>HPG13 3 3 3 3 3AMS 2- - 14 25 24 30 Aspetto Separ. Separ. Dispers. Dispers. Separ. Troppo di Fase di Fase Omog. Omog. di Fase Viscoso Stabilità 54 °C 15 gg. n.d. n.d. Stabile Stabile n.d. n.d.
Stabilità 4 °C 7 gg. n.d. n.d. Stabile Stabile n.d. n.d.
*comparativo
n.d. non determinato
Tabella 4
Ingrediente Esempio Esempio Esempio Esempio Esempio Esempio Esempio 19* 20 21 22 23 24 25 * Acqua deionizzata 46 46 46 52 46 46 46 AMS 1 40 34 30 25 20 15 10 Defomex 2033 N 1 1 1 1 1 1 1 Eucarol AGE/EC/UP 6 6 6 6 6 6 6 HPGAc 7 7 7 7 7 7 7 AMS 2 6 10 9 20 25 30
Aspetto Separ. Separ. Dispers. Dispers. Dispers. Dispers. Troppo di Fase di Fase Omog. Omog. Omog. Omog. Viscoso Stabilità 54 °C 15 gg. n.d. n.d. Stabile Stabile Stabile Stabile n.d. Stabilità 4 °C 7 gg. n.d. n.d. Stabile Stabile Stabile Stabile n.d. *comparativo
n.d. non determinato
Tabella 5
Ingrediente Esempio Esempio Esempio Esempio Esempio Esempio 26* 27* 28 29 30 31 Acqua deionizzata 50 55 56 50 56 50 AMS 1 40 35 20 20 15 15 Defomex 2033 N 1 1 1 1 1 1 Eucarol AGE/EC/UP 6 6 6 6 6 6 HPGAc 3 3 3 3 3 3 AMS 2 - - 14 20 19 25 Aspetto Separ. Separ. Dispers. Dispers. Dispers. Dispers.
di Fase di Fase Omog. Omog. Omog. Omog.
Stabilità 54 °C 15 gg. n.d. n.d. Stabile Stabile Stabile Stabile Stabilità 4 °C 7 gg. n.d. n.d. Stabile Stabile Stabile Stabile *comparativo
n.d. non determinato
I concentrati acquosi di adiuvanti (dispersioni) sono considerati stabili in
assenza di separazione di fase o di precipitazione o gelificazione.
Ogni dispersione preparata con il metodo della presente invenzione era
omogenea. Le dispersioni con una alta concentrazione iniziale di solfato di
ammonio (Esempi 1, 2, 13, 14, 19, 20, 26 e 27) hanno dato una
separazione di fase quasi immediata, quelle preparate (ad esempio 12, 18
e 25) a partire da una bassa concentrazione iniziale , sono diventate
troppo viscose per poter essere ulteriormente maneggiate.
Prove di Deriva dello Spray
Le proprietà anti-drift sono state valutate diluendo i concentrati acquosi
di adiuvanti degli Esempi 3 e 28 ad una concentrazione finale di HPG o
HPGAc pari a 0,2 e 0,3% in peso in acqua CIPAC D contenente l'1% in peso di una composizione che simula una formulazione SL basata sul glifosato contenente:
• 10 % in peso di ammina da sego etossilata (15EO)
• 90 % in peso di acqua tamponata a pH 4.7.
Come bianco (comparativo) Ã ̈ stato utilizzata acqua CIPAC D contenente l'1 % della composizione che simula una formulazione SL basata sul glifosato.
L'effetto anti-drift à ̈ stata valutato in una camera a vento (vedi Fig. 1) ad una temperatura di 22 ° C ± 2. La formulazione erbicida spray diluita à ̈ stata pompata a una pressione di 2,0 bar attraverso un ugello TP Teejet 11003VP, posto con asse verticale a 60 cm dal pavimento. Un flusso di aria assiale generato da un ventilatore attraversava la camera di vento trasversalmente rispetto al cono spray ad una velocità di circa 4 m/s. Ogni campione à ̈ stato spruzzato per 40 secondi.
Le gocce deviate sono state raccolte su un foglio di carta tarato (WxLxH= 0.8mx0.8mx0.2cm), posto verticalmente a 90 cm dal cono spray dalla parte opposta rispetto al ventilatore. Il drift à ̈ stato determinato come differenza in peso prima e dopo il test, misurato a distanza di 1 minuto dalla fine dell’applicazione. Tutti i test sono stati replicati tre volte. Il drift % (valore medio) à ̈ riportato nella Tabella 6 considerando la deriva del bianco (formulazione spray senza agente antidrift) pari al 100%.
Tabella 6
HPG/HPGAc Drift % Riduzione
Drift %
Bianco* - 100 0
Esempio 28 0,20% 12,2 87,8
Esempio 28 0,30% 8,1 91,9
Esempio 3 0,20% 12,9 87,1
Esempio 3 0,30% 6,7 93,3
* Comparativo
I dati sopra riportati dimostrano le ottime proprietà anti-drift dei concentrati acquosi di adiuvanti dell'invenzione.
Claims (8)
- RIVENDICAZIONI 1) Concentrato acquoso di adiuvanti comprendente da 33 a 40% in peso di solfato di ammonio, da 1 a 10% in peso di esteri anionici di alchil poliglicosidi e dal 2 al 10% in peso di idrossipropil guar o di idrossipropil guar acetato.
- 2) Il concentrato acquoso di adiuvanti secondo la rivendicazione 1) in cui gli esteri anionici di alchil poliglicosidi sono composti rappresentati dalla formula (I) [RO-(G)x]n-(D)y, dove R à ̈ un gruppo alchilico alifatico, saturo o insaturo, lineare o ramificato, con da 6 a 20 atomi di carbonio; G à ̈ un residuo di un saccaride riducente, collegato a RO per mezzo di un legame etereo O-glicosidico; O à ̈ un atomo di ossigeno; D à ̈ un residuo acilico collegato ad un atomo di ossigeno di G, e derivato da un acido bicarbossilico o policarbossilico avente una catena alifatica con da 2 a 8 atomi di carbonio, lineare o ramificata, satura o insatura, non sostituita o sostituita con uno o più gruppi ossidrilici o un gruppo solfonato, e in cui almeno un gruppo carbossilico à ̈ salificato o sotto forma di acido; n à ̈ un numero compreso tra 1 e m-1, dove m à ̈ il numero di gruppi carbossilici nell’acido che dà origine a D; x à ̈ un numero da 1 a 10, che rappresenta il grado medio di oligomerizzazione di G; y à ̈ un numero da 1 a 10 che rappresenta il grado medio di esterificazione.
- 3) Il concentrato acquoso di adiuvanti secondo la rivendicazione 2) in cui nella formula (I) R à ̈ un gruppo alchilico alifatico, saturo o insaturo, lineare o ramificato, con da 8 a 16 atomi di carbonio, G à ̈ il glucosio, x à ̈ compreso tra 1,0 e 2,5 e D à ̈ il residuo acilico di un acido carbossilico selezionato nel gruppo composto da acido citrico, acido tartarico, acido maleico, acido malico e acido solfosuccinico.
- 4) Il concentrato acquoso di adiuvanti secondo la rivendicazione 3) in cui l’idrossipropil guar ha una sostituzione molare idrossipropilica compresa tra 0,1 e 3,0, l’idrossipropil guar acetato ha una sostituzione molare idrossipropilica compresa tra 0,1 e 1,0 e contiene in media da 0,001 a 0,15 gruppi acetati per unità anidro glicosidica, e la viscosità Brookfield® RVT a 20 °C, 20 rpm e 1% in acqua dell’idrossipropil guar e dell’idrossipropil guar acetato à ̈ compresa tra 500 e 10.000 mPa*s.
- 5) Il concentrato acquoso di adiuvanti secondo la rivendicazione 1) o 4) in cui l’idrossipropil guar à ̈ un idrossipropil guar gliossalato, avente sostituzione molare compresa tra 0,1 e 3,0 e viscosità Brookfield® RVT a 20 ° C, 20 rpm, 1% in acqua da compresa tra 1.500 e 3.500 mPa*s.
- 6) Metodo di preparazione di un concentrato acquoso di adiuvanti secondo la rivendicazione 1) che comprende i seguenti stadi: i) dissolvere da 15 a 30 % in peso, sul peso del concentrato finale, di solfato di ammonio in acqua; ii) aggiungere alla soluzione da 1 a 10 % in peso, sul peso del concentrato finale, di esteri anionici di alchil poliglicosidi; iii) disperdere nella soluzione da 2 a 10 % in peso, sul peso del concentrato finale, di idrossipropil guar o di idrossipropil guar acetato; iiii) aggiungere alla dispersione solfato di ammonio per arrivare a una concentrazione finale di solfato di ammonio compresa tra 33 e 40 % in peso.
- 7) Formulazione erbicida spray comprendente da 0,01 a 5% in peso di almeno un erbicida e il concentrato acquoso di adiuvanti secondo la rivendicazione 1) in una quantità tale da avere nella formulazione stessa una concentrazione di idrossipropil guar o di idrossipropil guar acetato compresa tra 0,05 e 0,4 % in peso.
- 8) La formulazione erbicida spray della rivendicazione 7) in cui il diserbante à ̈ scelto tra N-(fosfonometil) glicina (Glyphosate) e suoi sali.
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IT000040A ITVA20110040A1 (it) | 2011-12-23 | 2011-12-23 | Concentrati acquosi di adiuvanti con migliori proprieta' di dispersione dello spray |
EP12196876.2A EP2606724A1 (en) | 2011-12-23 | 2012-12-13 | Aqueous adjuvant concentrates with improved spray drift properties |
US13/726,354 US9332763B2 (en) | 2011-12-23 | 2012-12-24 | Aqueous adjuvant concentrates with improved spray drift properties |
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IT000040A ITVA20110040A1 (it) | 2011-12-23 | 2011-12-23 | Concentrati acquosi di adiuvanti con migliori proprieta' di dispersione dello spray |
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US (1) | US9332763B2 (it) |
EP (1) | EP2606724A1 (it) |
IT (1) | ITVA20110040A1 (it) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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ITVA20130045A1 (it) * | 2013-08-09 | 2015-02-10 | Lamberti Spa | Formulazioni agrochimiche con migliore controllo della dispersione dello spray |
US9750243B2 (en) * | 2015-02-06 | 2017-09-05 | Lamberti Spa | Aqueous adjuvant concentrates with improved spray drift properties |
EP3282842B1 (en) * | 2015-04-14 | 2020-06-10 | Rhodia Operations | Liquid ammonium-free adjuvants and agricultural compositions for drift reduction and water conditioning |
CN107969106B (zh) * | 2015-04-14 | 2021-11-09 | 罗地亚经营管理公司 | 用于漂移减少和水调节的干无氨辅助剂 |
WO2023202937A1 (en) * | 2022-04-21 | 2023-10-26 | Basf Se | New agrochemical formulations |
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2011
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- 2012-12-24 US US13/726,354 patent/US9332763B2/en active Active
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Also Published As
Publication number | Publication date |
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US9332763B2 (en) | 2016-05-10 |
US20130165322A1 (en) | 2013-06-27 |
EP2606724A1 (en) | 2013-06-26 |
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