US20010044380A1 - Compositions and methods for controlling plant and flower moisture transpiration rates - Google Patents
Compositions and methods for controlling plant and flower moisture transpiration rates Download PDFInfo
- Publication number
- US20010044380A1 US20010044380A1 US09/759,386 US75938601A US2001044380A1 US 20010044380 A1 US20010044380 A1 US 20010044380A1 US 75938601 A US75938601 A US 75938601A US 2001044380 A1 US2001044380 A1 US 2001044380A1
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- alkyl
- surfactant
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- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 103
- 230000005068 transpiration Effects 0.000 title claims abstract description 10
- 238000000034 method Methods 0.000 title claims description 10
- 239000004094 surface-active agent Substances 0.000 claims abstract description 32
- 229920001577 copolymer Polymers 0.000 claims abstract description 31
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 31
- 239000001257 hydrogen Substances 0.000 claims abstract description 31
- 150000002431 hydrogen Chemical group 0.000 claims abstract description 28
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims abstract description 20
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 20
- 239000000178 monomer Substances 0.000 claims abstract description 16
- 125000004642 (C1-C12) alkoxy group Chemical group 0.000 claims abstract description 10
- 125000004400 (C1-C12) alkyl group Chemical group 0.000 claims abstract description 10
- 125000002837 carbocyclic group Chemical group 0.000 claims abstract description 10
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 10
- 150000002367 halogens Chemical group 0.000 claims abstract description 10
- 125000000623 heterocyclic group Chemical group 0.000 claims abstract description 10
- 229920001519 homopolymer Polymers 0.000 claims abstract description 8
- 239000004615 ingredient Substances 0.000 claims abstract description 8
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims abstract description 7
- 239000000969 carrier Substances 0.000 claims abstract description 6
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 claims abstract description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 5
- 125000002768 hydroxyalkyl group Chemical group 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 28
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 18
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 17
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 12
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 10
- CQEYYJKEWSMYFG-UHFFFAOYSA-N butyl acrylate Chemical compound CCCCOC(=O)C=C CQEYYJKEWSMYFG-UHFFFAOYSA-N 0.000 claims description 10
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- YYPNJNDODFVZLE-UHFFFAOYSA-N 3-methylbut-2-enoic acid Chemical compound CC(C)=CC(O)=O YYPNJNDODFVZLE-UHFFFAOYSA-N 0.000 claims description 4
- PSCXFXNEYIHJST-UHFFFAOYSA-N 4-phenylbut-3-enoic acid Chemical compound OC(=O)CC=CC1=CC=CC=C1 PSCXFXNEYIHJST-UHFFFAOYSA-N 0.000 claims description 4
- SOGAXMICEFXMKE-UHFFFAOYSA-N Butylmethacrylate Chemical compound CCCCOC(=O)C(C)=C SOGAXMICEFXMKE-UHFFFAOYSA-N 0.000 claims description 4
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 claims description 4
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 150000001768 cations Chemical class 0.000 claims description 3
- -1 ethylene, propylene, butylene, styrene Chemical class 0.000 claims description 3
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 3
- 150000003839 salts Chemical group 0.000 claims description 3
- JHLHKCWPDVKWNS-UHFFFAOYSA-N 2-(3-methyl-1,2,4-oxadiazol-5-yl)benzoic acid Chemical compound CC1=NOC(C=2C(=CC=CC=2)C(O)=O)=N1 JHLHKCWPDVKWNS-UHFFFAOYSA-N 0.000 claims description 2
- WCASXYBKJHWFMY-NSCUHMNNSA-N 2-Buten-1-ol Chemical compound C\C=C\CO WCASXYBKJHWFMY-NSCUHMNNSA-N 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 2
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical compound OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 claims description 2
- JIGUQPWFLRLWPJ-UHFFFAOYSA-N Ethyl acrylate Chemical compound CCOC(=O)C=C JIGUQPWFLRLWPJ-UHFFFAOYSA-N 0.000 claims description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims description 2
- 125000002252 acyl group Chemical group 0.000 claims description 2
- IJZWZSGPEJOCHI-UHFFFAOYSA-N butyl 3-methylbut-2-enoate Chemical compound CCCCOC(=O)C=C(C)C IJZWZSGPEJOCHI-UHFFFAOYSA-N 0.000 claims description 2
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 claims description 2
- 229940079881 disodium lauroamphodiacetate Drugs 0.000 claims description 2
- ZPRZNBBBOYYGJI-UHFFFAOYSA-L disodium;2-[1-[2-(carboxylatomethoxy)ethyl]-2-undecyl-4,5-dihydroimidazol-1-ium-1-yl]acetate;hydroxide Chemical group [OH-].[Na+].[Na+].CCCCCCCCCCCC1=NCC[N+]1(CCOCC([O-])=O)CC([O-])=O ZPRZNBBBOYYGJI-UHFFFAOYSA-L 0.000 claims description 2
- SUPCQIBBMFXVTL-UHFFFAOYSA-N ethyl 2-methylprop-2-enoate Chemical compound CCOC(=O)C(C)=C SUPCQIBBMFXVTL-UHFFFAOYSA-N 0.000 claims description 2
- UTXVCHVLDOLVPC-UHFFFAOYSA-N ethyl 3-methylbut-2-enoate Chemical compound CCOC(=O)C=C(C)C UTXVCHVLDOLVPC-UHFFFAOYSA-N 0.000 claims description 2
- WCASXYBKJHWFMY-UHFFFAOYSA-N gamma-methylallyl alcohol Natural products CC=CCO WCASXYBKJHWFMY-UHFFFAOYSA-N 0.000 claims description 2
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 claims description 2
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 claims description 2
- RGJWPEASQNLLNA-UHFFFAOYSA-N n-(2-aminoethyl)-n-methylprop-2-enamide Chemical compound NCCN(C)C(=O)C=C RGJWPEASQNLLNA-UHFFFAOYSA-N 0.000 claims description 2
- YPHQUSNPXDGUHL-UHFFFAOYSA-N n-methylprop-2-enamide Chemical compound CNC(=O)C=C YPHQUSNPXDGUHL-UHFFFAOYSA-N 0.000 claims description 2
- PNJWIWWMYCMZRO-UHFFFAOYSA-N pent‐4‐en‐2‐one Natural products CC(=O)CC=C PNJWIWWMYCMZRO-UHFFFAOYSA-N 0.000 claims description 2
- BOQSSGDQNWEFSX-UHFFFAOYSA-N propan-2-yl 2-methylprop-2-enoate Chemical compound CC(C)OC(=O)C(C)=C BOQSSGDQNWEFSX-UHFFFAOYSA-N 0.000 claims description 2
- QQVQBUXUAZCLLZ-UHFFFAOYSA-N propan-2-yl 3-methylbut-2-enoate Chemical compound CC(C)OC(=O)C=C(C)C QQVQBUXUAZCLLZ-UHFFFAOYSA-N 0.000 claims description 2
- LYBIZMNPXTXVMV-UHFFFAOYSA-N propan-2-yl prop-2-enoate Chemical compound CC(C)OC(=O)C=C LYBIZMNPXTXVMV-UHFFFAOYSA-N 0.000 claims description 2
- NHARPDSAXCBDDR-UHFFFAOYSA-N propyl 2-methylprop-2-enoate Chemical compound CCCOC(=O)C(C)=C NHARPDSAXCBDDR-UHFFFAOYSA-N 0.000 claims description 2
- JLAVFLRQAWOKRL-UHFFFAOYSA-N propyl 3-methylbut-2-enoate Chemical compound CCCOC(=O)C=C(C)C JLAVFLRQAWOKRL-UHFFFAOYSA-N 0.000 claims description 2
- PNXMTCDJUBJHQJ-UHFFFAOYSA-N propyl prop-2-enoate Chemical compound CCCOC(=O)C=C PNXMTCDJUBJHQJ-UHFFFAOYSA-N 0.000 claims description 2
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 claims description 2
- 150000001298 alcohols Chemical class 0.000 claims 2
- 125000006702 (C1-C18) alkyl group Chemical group 0.000 claims 1
- 230000002708 enhancing effect Effects 0.000 claims 1
- 230000009758 senescence Effects 0.000 abstract description 4
- 229920000642 polymer Polymers 0.000 description 43
- 241000196324 Embryophyta Species 0.000 description 26
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 15
- 230000009477 glass transition Effects 0.000 description 11
- 150000001732 carboxylic acid derivatives Chemical group 0.000 description 10
- 0 *C(C)=C(C)C Chemical compound *C(C)=C(C)C 0.000 description 8
- 230000001276 controlling effect Effects 0.000 description 6
- 239000002253 acid Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 5
- 229920002554 vinyl polymer Polymers 0.000 description 5
- 230000004888 barrier function Effects 0.000 description 4
- 238000001704 evaporation Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 238000006386 neutralization reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N CC(C)=O Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000003205 fragrance Substances 0.000 description 3
- 239000004816 latex Substances 0.000 description 3
- 229920000126 latex Polymers 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000035899 viability Effects 0.000 description 3
- 241000218642 Abies Species 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N CC(C)C Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- IKHGUXGNUITLKF-UHFFFAOYSA-N CC=O Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- OVSKIKFHRZPJSS-UHFFFAOYSA-N 2,4-D Chemical compound OC(=O)COC1=CC=C(Cl)C=C1Cl OVSKIKFHRZPJSS-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- 241000191291 Abies alba Species 0.000 description 1
- 235000004507 Abies alba Nutrition 0.000 description 1
- 206010067484 Adverse reaction Diseases 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 235000009355 Dianthus caryophyllus Nutrition 0.000 description 1
- 240000006497 Dianthus caryophyllus Species 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 241000282412 Homo Species 0.000 description 1
- QVDRBWCTHZOJNQ-UHFFFAOYSA-M O=C(CCCCCCCCCCCNCCOC(=O)[Na])CN(CCO)CC(=O)O[Na] Chemical compound O=C(CCCCCCCCCCCNCCOC(=O)[Na])CN(CCO)CC(=O)O[Na] QVDRBWCTHZOJNQ-UHFFFAOYSA-M 0.000 description 1
- 241000985694 Polypodiopsida Species 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 1
- 230000006838 adverse reaction Effects 0.000 description 1
- 239000000443 aerosol Substances 0.000 description 1
- 229910001860 alkaline earth metal hydroxide Inorganic materials 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 244000309464 bull Species 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 150000001734 carboxylic acid salts Chemical class 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 1
- 229940018557 citraconic acid Drugs 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000006184 cosolvent Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000002845 discoloration Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036253 epinasty Effects 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910000000 metal hydroxide Inorganic materials 0.000 description 1
- 150000004692 metal hydroxides Chemical class 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 241000894007 species Species 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000001993 wax Substances 0.000 description 1
- 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
- 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
- A01N25/30—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 characterised by the surfactants
-
- 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
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
-
- 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
- A01N3/00—Preservation of plants or parts thereof, e.g. inhibiting evaporation, improvement of the appearance of leaves or protection against physical influences such as UV radiation using chemical compositions; Grafting wax
- A01N3/02—Keeping cut flowers fresh chemically
-
- 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
- A01N37/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds containing a carbon atom having three bonds to hetero atoms with at the most two bonds to halogen, e.g. carboxylic acids
- A01N37/02—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof
- A01N37/04—Saturated carboxylic acids or thio analogues thereof; Derivatives thereof polybasic
Definitions
- the present invention relates to compositions for controlling plant and flower moisture transpiration rates and thereby providing a means for extending the time in which plants and cut flowers can be utilized in aesthetic displays or floral arrangements.
- the present invention meets the aforementioned needs in that it has been surprisingly discovered that cut flowers can be preserved in a nearly original state for an extended period of time, in fact, in some instances a period which eclipses their aesthetic utility. It has been surprisingly discovered that by controlling the plant and flower moisture transpiration rates flowers can be cut and displayed without the pejorative effects of natural demise (senescence), inter alia, wilting (epinasty) or loss of petals, browning or discoloration of flower parts. This post-harvest viability can be suitably established by effectively applying a moisture vapor barrier which itself does not contribute to diminished plant aesthetic value, i.e., petal burning or browning.
- the first aspect of the present invention relates to a composition for controlling plant and flower moisture transpiration, said composition comprising:
- each R 1 is independently hydrogen, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof;
- R 2 is hydrogen, halogen, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof;
- compositions of the present invention can be applied to the surface of cut plants or flowers by any means appropriate, for example, the flowers may be dipped into a solution, or the composition may be delivered via spray.
- the presence or the lack of a propellant to deliver said composition has no effect on the ability of the compositions to effectively and evenly coat the surface of the plant regardless of plant morphology.
- the present invention relates to compositions for controlling plant and flower moisture transpiration rates and thereby providing a system for extending the time in which plants and cut flowers can be utilized in aesthetic displays or floral arrangements.
- the present invention is achieved by controlling the rate at which water is lost from the plant or cut flower via evaporation.
- the term “aesthetic utility” is defined herein as “the duration in which a flower retains its aesthetic appeal”.
- the end of aesthetic appeal may differ between species of plant or flower, however, non-limiting examples of a property which may contribute wholly or severally to a loss of aesthetic appeal include browning of petals, loss of petals, drooping or down turn of blossoms, wilting, and shrinkage of plant mass together with collapse of plant tissue.
- one manifestation of senescence may abate the usefulness of the flower, for example, the “browning” of petals may preclude the further use of a flower regardless of the lack of other conditions which tend to detract from the aesthetic quality of the cut flower.
- compositions of the present invention can be delivered to the exposed surface of the flower or plant by any suitable means.
- delivery of the compositions include, spraying by means of aerosol, or pump, direct immersion, and variations which combine elements of immersion and spraying.
- the first component of the present invention comprises a homopolymer or copolymer which when applied to the air-exposed surface of a cut plant or flower produces a barrier having a water vapor transfer rate capable of establishing a moisture equilibrium which attenuates the onset of senescence and extends the duration of aesthetic utility for said cut plant or flower.
- polymer is herein defined as “an oligomer, homo-polymer, co-polymer, or mixtures thereof which satisfy the herein described requirements for establishing a moisture equilibrium in the cut flower or plant”.
- the polymers of the present invention may comprise any polymeric material which satisfactorily regulates the water vapor transfer rate of the plant or flower to which it is applied.
- the polymers are co-polymers which are formed from one or more “vinyl monomers” having the formula:
- each R′ is independently hydrogen, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof;
- R 2 is hydrogen, halogen, preferably chlorine or fluorine, C 1 -C 12 alkyl, C 1 -C 12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof;
- Non-limiting examples of preferred vinyl monomers include, ethylene, propylene, butylene, styrene, vinyl alcohol, crotyl alcohol, acrylic acid, styrylacetic acid, methacrylic acid, crotonic acid, 3,3-dimethyl-acrylic acid, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, butyl methacrylate, methyl 3,3-dimethyl-acrylate, ethyl 3,3-dimethyl-acrylate, n-propyl 3,3-dimethyl-acrylate, isopropyl 3,3-dimethyl-acrylate, butyl 3,3-dimethyl-acrylate, acrylamide, N-methyl acrylamide, N,N-dimethyl acrylamide,
- the polymers are homopolymers which are formed from one or more “vinyl monomers” having the formula:
- R 1 , R 2 , and X are defined herein above.
- One embodiment comprises polymers havi a water vapor transfer rate of less than 10 g-mm/m 2 -day, while other embodiments required a rate of 5 g-mm/m 2 -day.
- formulators may restrict the water vapor transfer rate to 2 g-mm/m 2 -day in preparing other suitable embodiments.
- Suitable means for determining water vapor transmission rates of polymers is by ASTM D1653 for a 0.02 inch (20 mill) film, ASTM E-96-66, Procedure E at 90% relative humidity and 100° F. for a 1 mm or 2 mm film, or TAPPI T 464 os-79 for a 2 mm film.
- Copolymers of the present invention further have a glass transition temperature, T g , greater than about 30° C., but other embodiments have T g values greater than about 40° C., yet other embodiments will have polymers with T g greater than about 60° C.
- T g glass transition temperature
- W 1 represents the weight portion of monomer 1
- W 2 represents the weight portion of monomer 2
- T 1 the glass transition temperature of the polymerized monomer 1 in °K.
- T 2 the glass transition temperature of the polymerized monomer 2 in °K.
- T Co the glass transition temperature of the copolymer in °K.
- the formulator can readily establish whether a copolymer will satisfy the requirements of vapor transfer rate and glass transition temperature as set forth herein above.
- a plot of the glass transition temperature, T g , expressed in °C. of the copolymer along the x axis (ordinate) versus the water vapor transfer rate expressed in g-mm/m 2 -day (measured or calculated) along the y axis (abscissa) preferably falls to the left of the line defined by the equation:
- Points which fall to the right of said equation will have a permeability ineffective in establishing a suitable moisture barrier at a desirable glass transition temperature. Points which fall to the right of said equation may also produce films having no ability to form an aesthetically suitable surface. For example, too high of a glass transition temperature leads to hard and/or brittle films which may detract from the aesthetic qualities which are desirable.
- the water vapor transfer rate and glass transition temperature are adjusted such that the applied polymer produces a clear, colorless, translucent, and transparent film.
- crosslinkable vinyl monomers having the formula:
- R 3 is R 1 , —(CH 2 ) m CH 2 OH, —(CH 2 ) m CO 2 R′ wherein each R′ is independently hydrogen, C 1 -C 8 alkyl, and mixtures thereof; the index m is from 0 to 6.
- crosslinkable vinyl monomers include maleic acid, fumaric acid, itaconic acid, citraconic acid, hydromuconic acid, and mixtures thereof.
- composition comprising from about 0.1% by weight, of a polymer
- composition comprising from about 1% by weight, of a polymer
- composition comprising from about 2% by weight, of a polymer
- composition comprising from about 2.5% by weight, of a polymer
- composition comprising up to about 5%, by weight, of a polymer
- composition comprising up to about 10%, by weight, of a polymer
- the polymer can be obtained for use in any form, for example, as a dispersion in the reaction (polymerization) solvent, or the polymer can be provided as a solid.
- some of carboxylic acid residues, acrylic acid, inter alia, which comprise the polymers of the present invention will be neutralized.
- Suitable means for neutralization includes the use of bases, non-limiting examples of which include alkaline metal hydroxides, inter alia, sodium hydroxide, alkaline earth metal hydroxides, inter alia, calcium hydroxide, ammonia, and mixtures thereof.
- bases non-limiting examples of which include alkaline metal hydroxides, inter alia, sodium hydroxide, alkaline earth metal hydroxides, inter alia, calcium hydroxide, ammonia, and mixtures thereof.
- the degree of neutralization typically depends upon the selected monomers which comprise the polymer and which properties must be adjusted to insure the application of an homogeneous film which achieves the required glass transition temperatures and vapor transmission rates described herein.
- the first compositions comprise a polymer, in another embodiment a copolymer, which is solublized in a carrier.
- a carrier is water or in another embodiment water together with one or more alcohol co-solvents.
- Some polymers which comprise one or more carboxylic acid monomers can be made water soluble or water dispersible by converting all or some of the carboxylic acid residues to carboxylic acid salts by treatment with base. It will be appreciated by the formulator that the water vapor transfer rates of the polymers will by related to the hydrophilicity of the polymers; the more hydrophilic a polymer the higher the water vapor transfer rate.
- Some formulators may desire the polymers of the present invention, when applied to the plant surface, to form a clear, colorless, translucent, and transparent membrane. Therefore, it is preferable that the polymers of the present invention when utilizing this embodiment are delivered via the carrier solution such that evaporation of the carrier solution leads to formation of a homogeneous polymer layer rather than “clumping” due to differential spreading along the flower surface.
- An example of a suitable copolymer comprises the reaction product obtained when polymerizing:
- Another copolymer comprises the reaction product obtained when reacting:
- a further example of a copolymer suitable for use in the present invention comprises:
- neutralization of the acrylic acid residues can be achieved with a suitable base, for example, at least 5%, or in another case 10% of the acrylic acid residues.
- any suitable process can be used to form the compositions according to the present invention.
- the following process allows for the efficient formation of the polymeric solutions without phase separation.
- the process of the present invention comprises the steps of:
- the process of the present invention starting from a latex, comprises the steps of:
- compositions of the present invention comprise a surfactant.
- the amount of said surfactant is predicated on the desired properties of the final delivery which is modifyable by the formulator.
- the compositions of the present invention comprise from about 0.01% by weight of surfactant, however, other embodiments will comprise from about 0.05%, or from about 0.1%.
- the formulator may choose the upper limit of surfactant to be about 5%, but about 2%, and even about 0.5% by weight, of a surfactant is suitable in executing the desirable compositions and embodiments of the present invention. This range of from about 0.01% to about 5% gives the formulator an opportunity to adjust the final compositions.
- Amounts of surfactant below 0.01% and above 5% by weight, are outside the scope of the present invention.
- the suitable surfactants of the present invention are surfactants which are capable of evenly wetting the surface of plants and which do not cause browning or other adverse reactions to the plant surface.
- One class of surfactants suitable for use in the present invention have the formula:
- R 4 is —(CH 2 ) z CO 2 M, —(CH 2 ) z SO 3 M, —(CH 2 ) z OSO 3 M, —(CH 2 ) z PO 3 M, and mixtures thereof; preferably —(CH 2 ) z CO 2 M, and mixtures thereof.
- the index z is from 1 to 10, preferably 2 to 4, more preferably 2 or 3.
- M is hydrogen or a salt forming cation, preferably sodium or potassium, more preferably sodium.
- the indices x and y are each independently an integer from 2 to 6; preferably 2 or 3 more preferably 2. In a preferred embodiment the indices x and y are equal to each other.
- R 5 is an acyl unit having the formula:
- R 6 and R 8 are each independently hydrogen, C 1 -C 4 alkyl, and mixtures thereof;
- R 7 is C 2 -C 12 alkylene;
- t is from 0 to 10;
- R 5 has the formula:
- R 4 is —(CH 2 ) z CO 2 M, and mixtures thereof; the y is equal to 2 or 3; the index y is equal to the index z.
- the index w′ is at least 6, in another embodiment from 8, more in still other embodiments from 10 to 14, and up to 12.
- a non-limiting example of a surfactant according to the present invention is disodium lauroampho diacetate having the formula:
- the surfactants suitable for use in the present invention are surfactants which do not cause browning of flower petals.
- a 0.01% by weight, aqueous solution of a linear alkyl benzene sulphonate (LAS) is sprayed onto a control flower.
- white carnations are selected as the control and test flower.
- the amount of flower browning which is present after 48 hours is taken as a set point. Browning of this amount will render a surfactant unsuitable for use as a surfactant according to the present invention.
- surfactants which provide no change in flower petal morphology or color are selected for use in the present compositions.
- the polymers which comprise the first component of the present invention are suitably dissolved in a carrier which is effective in delivering the polymer as a homogeneous layer to the flower or plant surface.
- a carrier which is effective in delivering the polymer as a homogeneous layer to the flower or plant surface.
- carriers according to the present invention include water and an alcohol selected from the group consisting of methanol, ethanol, isopropanol, n-propanol, ethylene glycol, propylene glycol, and mixtures thereof; preferably a carrier comprising both water and an alcohol wherein the ratio of water to said alcohol is from about 99:1 to about 1:99.
- the first component of the present invention may further comprise one or more adjunct ingredients.
- Preferred adjunct ingredients are selected from the group consisting of surfactants, fragrance raw materials, pro-fragrances, pro-accords, dye, colorants, and mixtures thereof.
- Suitable pro-fragrances and pro-accords are described in U.S. Pat. No. 5,919,752 Morelli et al., issued Jul. 6, 1999; U.S. Pat. No. 5,756,827 Sivik, issued May 26, 1998; U.S. Pat. No. 5,744,435 Hartman et al., issued Apr. 25, 1998; and U.S. Pat. No. 5,965,767 Sivik et al., issued Oct. 12, 1999 all of which are incorporated herein by reference.
- compositions of the present invention are not restricted to preserving cut flowers and plants but are also useful in extending the life of harvested fir trees, inter alia, for use as Christmas trees, or the cuttings taken from branches for use as adornment.
- Coniferous trees typically, firs which are placed in the home as adornments during Christmas are subject to dehydration and are, therefore, prone to dropping their needles and becoming a fire hazard.
- the compositions of the present invention can be used to extend the life of fir trees which are harvested for holiday decorations. Palm fronds as well as ferns may also have their aesthetic life extended by the compositions of the present invention.
- compositions which comprise the present invention.
- TABLE I weight % Ingredients 1 2 3 4 Copolymer 1 2.5 — — — Copolymer 2 — 2.2 — — Copolymer 3 — — 2.9 — Copolymer 4 — — — — 1.8
- Surfactant 5 0.1 0.1 0.1 0.1 0.1
- Preservative 6 0.0002 0.0002 0.0002 0.0002 0.0002
- Carrier 7 balance balance balance balance balance balance Percent acid residues neutralized 10 10 10 12
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Abstract
The present invention relates to compositions for controlling plant and flower moisture transpiration and thereby extending the period of time in which cut flowers can be displayed before senescence produces a flower which has exceeded its aesthetic value. The compositions of the present invention comprise:
a) from about 0.1% to about 20% by weight, of a homopolymer or copolymer comprising monomers having the formula:
wherein each R1 is independently hydrogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; R2 is hydrogen, halogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; X is hydrogen, hydroxyl, halogen, —(CH2)mCH2OH, —(CH2)mCOR, —(CH2)mCH2OCOR′, wherein R is —OR′, —N(R′)2, —(CH2)nN(R″)2, and mixtures thereof; each R′ is independently hydrogen, C1-C8 alkyl, C2-C8 hydroxyalkyl, —(CH2)nN(R″)2, and mixtures thereof; wherein R″ is independently hydrogen, C1-C4 alkyl, and mixtures thereof; the index m is from 0 to 6, the index n is from 2 to 6;
b) from about 0.01% to about 5% by weight, of a surfactant; and
c) the balance carriers and adjunct ingredients.
Description
- This Application claims priority to U.S. Provisional patent application Ser. No. 60/176,276 filed Jan. 14, 2000.
- The present invention relates to compositions for controlling plant and flower moisture transpiration rates and thereby providing a means for extending the time in which plants and cut flowers can be utilized in aesthetic displays or floral arrangements.
- Flowers have been inextricably linked to human culture since antiquity. Flowers have come to represent various aspects of life and to represent various facets of the human condition. As symbols of our society they speak directly. Flowers are never out of place regardless of the circumstances, inter alia, births, funerals, weddings, memorials.
- Humans have cultivated and propagated flowers solely for their aesthetic value since most flowers are inedible. Incunabula describe various techniques for cutting and preserving flowers, inter alia, oriental flower varnishing, dipping blossoms into waxes or wax-like solutions. Contemporary practices include fashioning artificial flowers and blossoms from synthetic material, most notably polymers. However, all of these methods for preserving flowers, or attempts at flower imitation, fails to reproduce or replace the freshness of newly cut flowers.
- The prior art has attempted to provide methods of preserving cut flowers in a fresh state, but the means are inadequate to provide flowers in a nearly original state for an enhanced period of time, for example, two to five times the expected period of use.
- There is, therefore, a long felt need to provide the consumer or the grower of flowers which are to be cut and displayed for aesthetic purposes, with a system with significantly extends the duration in which the cut flowers maintain their original appearance.
- The present invention meets the aforementioned needs in that it has been surprisingly discovered that cut flowers can be preserved in a nearly original state for an extended period of time, in fact, in some instances a period which eclipses their aesthetic utility. It has been surprisingly discovered that by controlling the plant and flower moisture transpiration rates flowers can be cut and displayed without the pejorative effects of natural demise (senescence), inter alia, wilting (epinasty) or loss of petals, browning or discoloration of flower parts. This post-harvest viability can be suitably established by effectively applying a moisture vapor barrier which itself does not contribute to diminished plant aesthetic value, i.e., petal burning or browning.
- Flowers are ubiquitous in that they can adapt to environmental or ecological stresses. For example, during times of drought or other circumstances of water deprivation, flowers regulate their growth thereby attenuating the effects which moisture deprivation stress has on their viability. This ability to self regulate their growth cycle ameliorates many of the pejorative consequences of water deprivation on flower survival. Once flowers are cut during harvesting, the natural regulatory systems, inter alia, respiration, water regulation, are abated. It has been surprisingly discovered that an artificial level of viability can be maintained by applying a composition which controls the loss of plant tissue moisture via transpiration/evaporation.
- The first aspect of the present invention relates to a composition for controlling plant and flower moisture transpiration, said composition comprising:
-
- wherein each R1 is independently hydrogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; R2 is hydrogen, halogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; X is hydrogen, hydroxyl, halogen, —(CH2)mCH2OH, —(CH2)mCOR, —(CH2)mCH2OCOR′, wherein R is —OR′, —N(R′)2, —(CH2)nN(R′)2, and mixtures thereof; each R′ is independently hydrogen, C1-C8 alkyl, C2-C8 hydroxyalkyl, —(CH2)nN(R″)2, and mixtures thereof; wherein R″ is independently hydrogen, C1-C4 alkyl, and mixtures thereof; the index m is from 0 to 6, the index n is from 2 to 6;
- b) from about 0.01% to about 5% by weight, of a surfactant; and
- c) the balance carriers and adjunct ingredients.
- The compositions of the present invention can be applied to the surface of cut plants or flowers by any means appropriate, for example, the flowers may be dipped into a solution, or the composition may be delivered via spray. The presence or the lack of a propellant to deliver said composition has no effect on the ability of the compositions to effectively and evenly coat the surface of the plant regardless of plant morphology.
- These and other objects, features, and advantages will become apparent to those of ordinary skill in the art from a reading of the following detailed description and the appended claims. All percentages, ratios and proportions herein are by weight, unless otherwise specified. All temperatures are in degrees Celsius (°C.) unless otherwise specified. All documents cited are in relevant part, incorporated herein by reference.
- The present invention relates to compositions for controlling plant and flower moisture transpiration rates and thereby providing a system for extending the time in which plants and cut flowers can be utilized in aesthetic displays or floral arrangements. The present invention is achieved by controlling the rate at which water is lost from the plant or cut flower via evaporation.
- Without wishing to be limited by theory it has been found that control of the evaporation of water from cut flowers enhances the duration in which flowers appear in their pre-harvested, natural state. It has also been surprisingly discovered that a certain class of surfactant acts to evenly apply the moisture vapor barrier material (copolymer as described herein below) and does so without rupturing the plant cells thereby leading to browning of leaves and other aesthetic negatives.
- For the purposes of the present invention the term “aesthetic utility” is defined herein as “the duration in which a flower retains its aesthetic appeal”. The end of aesthetic appeal may differ between species of plant or flower, however, non-limiting examples of a property which may contribute wholly or severally to a loss of aesthetic appeal include browning of petals, loss of petals, drooping or down turn of blossoms, wilting, and shrinkage of plant mass together with collapse of plant tissue. In some instances, one manifestation of senescence may abate the usefulness of the flower, for example, the “browning” of petals may preclude the further use of a flower regardless of the lack of other conditions which tend to detract from the aesthetic quality of the cut flower.
- The compositions of the present invention can be delivered to the exposed surface of the flower or plant by any suitable means. Non-limiting examples of delivery of the compositions include, spraying by means of aerosol, or pump, direct immersion, and variations which combine elements of immersion and spraying.
- Moisture Transpiration Controlling Polymer
- The first component of the present invention comprises a homopolymer or copolymer which when applied to the air-exposed surface of a cut plant or flower produces a barrier having a water vapor transfer rate capable of establishing a moisture equilibrium which attenuates the onset of senescence and extends the duration of aesthetic utility for said cut plant or flower.
- For the purposes of the present invention the term “polymer” is herein defined as “an oligomer, homo-polymer, co-polymer, or mixtures thereof which satisfy the herein described requirements for establishing a moisture equilibrium in the cut flower or plant”. The polymers of the present invention may comprise any polymeric material which satisfactorily regulates the water vapor transfer rate of the plant or flower to which it is applied.
-
- wherein each R′ is independently hydrogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; R2 is hydrogen, halogen, preferably chlorine or fluorine, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; X is hydrogen, hydroxyl, halogen, —(CH2)mCH2OH, —(CH2)mCOR, (CH2)mCH2OCOR′ wherein R is —OR′, —N(R′)2, —(CH2)nN(R″)2, and mixtures thereof; each R′ is independently hydrogen, C1-C8 alkyl, C2-C8 hydroxyalkyl, —(CH2)nN(R″)2, and mixtures thereof; wherein R″ is independently hydrogen, C1-C4 alkyl, and mixtures thereof; the index m is from 0 to 6, the index n is from 2 to 6. Non-limiting examples of preferred vinyl monomers include, ethylene, propylene, butylene, styrene, vinyl alcohol, crotyl alcohol, acrylic acid, styrylacetic acid, methacrylic acid, crotonic acid, 3,3-dimethyl-acrylic acid, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, butyl methacrylate, methyl 3,3-dimethyl-acrylate, ethyl 3,3-dimethyl-acrylate, n-propyl 3,3-dimethyl-acrylate, isopropyl 3,3-dimethyl-acrylate, butyl 3,3-dimethyl-acrylate, acrylamide, N-methyl acrylamide, N,N-dimethyl acrylamide, N-(aminoethyl) methyl acrylamide, vinyl acetate, and mixtures thereof.
-
- wherein R1, R2, and X are defined herein above.
- In another embodiment of the present invention, a mixture of homopolymers anc copolymers are used.
- One embodiment comprises polymers havi a water vapor transfer rate of less than 10 g-mm/m2-day, while other embodiments required a rate of 5 g-mm/m2-day. However, formulators may restrict the water vapor transfer rate to 2 g-mm/m2-day in preparing other suitable embodiments. Suitable means for determining water vapor transmission rates of polymers is by ASTM D1653 for a 0.02 inch (20 mill) film, ASTM E-96-66, Procedure E at 90% relative humidity and 100° F. for a 1 mm or 2 mm film, or TAPPI T 464 os-79 for a 2 mm film.
-
- wherein W1 represents the weight portion of monomer 1, W2 represents the weight portion of monomer 2, T1 the glass transition temperature of the polymerized monomer 1 in °K., T2 the glass transition temperature of the polymerized monomer 2 in °K., TCo, the glass transition temperature of the copolymer in °K.
- The formulator can readily establish whether a copolymer will satisfy the requirements of vapor transfer rate and glass transition temperature as set forth herein above. A plot of the glass transition temperature, Tg, expressed in °C. of the copolymer along the x axis (ordinate) versus the water vapor transfer rate expressed in g-mm/m2-day (measured or calculated) along the y axis (abscissa) preferably falls to the left of the line defined by the equation:
- y=−0.068443x+10.
- Points which fall to the right of said equation will have a permeability ineffective in establishing a suitable moisture barrier at a desirable glass transition temperature. Points which fall to the right of said equation may also produce films having no ability to form an aesthetically suitable surface. For example, too high of a glass transition temperature leads to hard and/or brittle films which may detract from the aesthetic qualities which are desirable. When formulating certain embodiments of the present invention, the water vapor transfer rate and glass transition temperature are adjusted such that the applied polymer produces a clear, colorless, translucent, and transparent film.
-
- wherein X is the same as defined herein above; R3 is R1, —(CH2)mCH2OH, —(CH2)mCO2R′ wherein each R′ is independently hydrogen, C1-C8 alkyl, and mixtures thereof; the index m is from 0 to 6. Non-limiting examples of “crosslinkable vinyl monomers” include maleic acid, fumaric acid, itaconic acid, citraconic acid, hydromuconic acid, and mixtures thereof.
- The following are examples of non-limiting embodiments of the present invention:
- a) a composition comprising from about 0.1% by weight, of a polymer;
- b) a composition comprising from about 1% by weight, of a polymer;
- c) a composition comprising from about 2% by weight, of a polymer;
- d) a composition comprising from about 2.5% by weight, of a polymer;
- e) a composition comprising up to about 5%, by weight, of a polymer;
- f) a composition comprising up to about 7%, by weight, of a polymer;
- g) a composition comprising up to about 10%, by weight, of a polymer;
- h) a composition comprising up to about 20%, by weight, of a polymer.
- The polymer can be obtained for use in any form, for example, as a dispersion in the reaction (polymerization) solvent, or the polymer can be provided as a solid. In one variation of the present invention some of carboxylic acid residues, acrylic acid, inter alia, which comprise the polymers of the present invention will be neutralized. For example, the following are non-limiting examples of the embodiments which relate to neutralization of the acid groups:
- a) a composition wherein from about 1% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein from about 5% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein from about 10% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein to about 100% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein to about 50% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein from about 20% of said carboxylic acid residues are neutralized in said polymer;
- a) a composition wherein from about 15% of said carboxylic acid residues are neutralized in said polymer;
- Suitable means for neutralization includes the use of bases, non-limiting examples of which include alkaline metal hydroxides, inter alia, sodium hydroxide, alkaline earth metal hydroxides, inter alia, calcium hydroxide, ammonia, and mixtures thereof. The degree of neutralization typically depends upon the selected monomers which comprise the polymer and which properties must be adjusted to insure the application of an homogeneous film which achieves the required glass transition temperatures and vapor transmission rates described herein.
- The first compositions comprise a polymer, in another embodiment a copolymer, which is solublized in a carrier. As described herein below, the typical and most convenient carrier is water or in another embodiment water together with one or more alcohol co-solvents. Some polymers which comprise one or more carboxylic acid monomers can be made water soluble or water dispersible by converting all or some of the carboxylic acid residues to carboxylic acid salts by treatment with base. It will be appreciated by the formulator that the water vapor transfer rates of the polymers will by related to the hydrophilicity of the polymers; the more hydrophilic a polymer the higher the water vapor transfer rate. Some formulators, for aesthetic purposes, may desire the polymers of the present invention, when applied to the plant surface, to form a clear, colorless, translucent, and transparent membrane. Therefore, it is preferable that the polymers of the present invention when utilizing this embodiment are delivered via the carrier solution such that evaporation of the carrier solution leads to formation of a homogeneous polymer layer rather than “clumping” due to differential spreading along the flower surface.
- An example of a suitable copolymer comprises the reaction product obtained when polymerizing:
- i) from about 20% to about 60% by weight, of methyl methacrylate;
- ii) from about 20% to about 60% by weight, of butyl acrylate; and
- iii) from about 0.5% to about 20% by weight, of acrylic acid.
- Another copolymer comprises the reaction product obtained when reacting:
- i) from about 40% to about 50% by weight, of methyl methacrylate;
- ii) from about 40% to about 50% by weight, of butyl acrylate; and
- iii) from about 5% to about 15% by weight, of acrylic acid.
- A further example of a copolymer suitable for use in the present invention comprises:
- i) about 43% by weight, of methyl methacrylate;
- ii) about 47% by weight, of butyl acrylate; and
- iii) about 10% by weight, of acrylic acid.
- Each of the above embodiments, neutralization of the acrylic acid residues can be achieved with a suitable base, for example, at least 5%, or in another case 10% of the acrylic acid residues.
- Any suitable process can be used to form the compositions according to the present invention. However, it has been surprisingly discovered that the following process allows for the efficient formation of the polymeric solutions without phase separation. The process of the present invention comprises the steps of:
- a) dissolving a solid polymeric material free from solvents in the alcohol portion of the carrier;
- b) neutralizing acid residues to the desired level by adding dropwise an aqueous solution of base, preferably sodium hydroxide, more preferably 30% by weight sodium hydroxide;
- c) adding at a rate of from 0.1% of the water which comprises the balance of the carrier to 10% of the water which comprises the balance of the carrier per minute; and
- d) adding the surfactant.
- The process of the present invention, starting from a latex, comprises the steps of:
- a) adding to an aqueous latex of a polymer comprising from about 25% to about 70% solids, an alcohol or other co-solvent to form a diluted latex;
- b) neutralizing acid residues of the polymer which comprises said polymer to the desired level by adding dropwise an aqueous solution of base, preferably sodium hydroxide, more preferably 30% by weight sodium hydroxide;
- c) adding at a rate of from 0.1% of the water which comprises the balance of the carrier to 10% of the water which comprises the balance of the carrier per minute; and
- d) adding the surfactant.
- Surfactant
- The compositions of the present invention comprise a surfactant. The amount of said surfactant is predicated on the desired properties of the final delivery which is modifyable by the formulator. In a broad embodiment the compositions of the present invention comprise from about 0.01% by weight of surfactant, however, other embodiments will comprise from about 0.05%, or from about 0.1%. The formulator may choose the upper limit of surfactant to be about 5%, but about 2%, and even about 0.5% by weight, of a surfactant is suitable in executing the desirable compositions and embodiments of the present invention. This range of from about 0.01% to about 5% gives the formulator an opportunity to adjust the final compositions. Amounts of surfactant below 0.01% and above 5% by weight, are outside the scope of the present invention. The suitable surfactants of the present invention are surfactants which are capable of evenly wetting the surface of plants and which do not cause browning or other adverse reactions to the plant surface.
-
-
- wherein R6 and R8 are each independently hydrogen, C1-C4 alkyl, and mixtures thereof; R7 is C2-C12 alkylene; t is from 0 to 10; the indices w′ and w″ are each independently from 0 to 14, w′+w″=at least 6.
-
- wherein R4 is —(CH2)zCO2M, and mixtures thereof; the y is equal to 2 or 3; the index y is equal to the index z. The index w′ is at least 6, in another embodiment from 8, more in still other embodiments from 10 to 14, and up to 12.
-
- available ex Rhodia as Miranol® Ultra 32.
- The surfactants suitable for use in the present invention are surfactants which do not cause browning of flower petals. A 0.01% by weight, aqueous solution of a linear alkyl benzene sulphonate (LAS) is sprayed onto a control flower. Preferably white carnations are selected as the control and test flower. The amount of flower browning which is present after 48 hours is taken as a set point. Browning of this amount will render a surfactant unsuitable for use as a surfactant according to the present invention. Preferably surfactants which provide no change in flower petal morphology or color are selected for use in the present compositions.
- Carriers and Adjunct Ingredients
- The polymers which comprise the first component of the present invention are suitably dissolved in a carrier which is effective in delivering the polymer as a homogeneous layer to the flower or plant surface. Non-limiting examples of carriers according to the present invention include water and an alcohol selected from the group consisting of methanol, ethanol, isopropanol, n-propanol, ethylene glycol, propylene glycol, and mixtures thereof; preferably a carrier comprising both water and an alcohol wherein the ratio of water to said alcohol is from about 99:1 to about 1:99.
- The first component of the present invention may further comprise one or more adjunct ingredients. Preferred adjunct ingredients are selected from the group consisting of surfactants, fragrance raw materials, pro-fragrances, pro-accords, dye, colorants, and mixtures thereof. Suitable pro-fragrances and pro-accords are described in U.S. Pat. No. 5,919,752 Morelli et al., issued Jul. 6, 1999; U.S. Pat. No. 5,756,827 Sivik, issued May 26, 1998; U.S. Pat. No. 5,744,435 Hartman et al., issued Apr. 25, 1998; and U.S. Pat. No. 5,965,767 Sivik et al., issued Oct. 12, 1999 all of which are incorporated herein by reference.
- The compositions of the present invention are not restricted to preserving cut flowers and plants but are also useful in extending the life of harvested fir trees, inter alia, for use as Christmas trees, or the cuttings taken from branches for use as adornment. Coniferous trees, typically, firs which are placed in the home as adornments during Christmas are subject to dehydration and are, therefore, prone to dropping their needles and becoming a fire hazard. The compositions of the present invention can be used to extend the life of fir trees which are harvested for holiday decorations. Palm fronds as well as ferns may also have their aesthetic life extended by the compositions of the present invention.
- The following are non-liming examples of the compositions which comprise the present invention.
TABLE I weight % Ingredients 1 2 3 4 Copolymer1 2.5 — — — Copolymer2 — 2.2 — — Copolymer3 — — 2.9 — Copolymer4 — — — 1.8 Surfactant5 0.1 0.1 0.1 0.1 Preservative6 0.0002 0.0002 0.0002 0.0002 Carrier7 balance balance balance balance Percent acid residues neutralized 10 10 10 12
Claims (20)
1. A composition for controlling plant and flower moisture transpiration, said composition comprising:
a) from about 0.1% to about 20% by weight, of a homopolymer or copolymer comprising monomers having the formula:
wherein each R′ is independently hydrogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; R2 is hydrogen, halogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; X is hydrogen, hydroxyl, halogen, —(CH2)mCH2OH, —(CH2)mCOR, —(CH2)mCH2OCOR′, wherein R is —OR′, —N(R′)2, —(CH2)nN(R″)2, and mixtures thereof; each R′ is independently hydrogen, C1-C18 alkyl, C2-C8 hydroxyalkyl, —(CH2)nN(R″)2, and mixtures thereof; wherein R″ is independently hydrogen, C1-C4 alkyl, and mixtures thereof; the index m is from 0 to 6, the index n is from 2 to 6;
b) from about 0.01% to about 5% by weight, of a surfactant; and
c) the balance carriers and adjunct ingredients.
2. A composition according to wherein said homopolymer or copolymer comprises monomers selected from the group consisting of ethylene, propylene, butylene, styrene, vinyl alcohol, crotyl alcohol, acrylic acid, styrylacetic acid, methacrylic acid, crotonic acid, 3,3-dimethyl-acrylic acid, methyl acrylate, ethyl acrylate, n-propyl acrylate, isopropyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, n-propyl methacrylate, isopropyl methacrylate, butyl methacrylate, methyl 3,3-dimethyl-acrylate, ethyl 3,3-dimethyl-acrylate, n-propyl 3,3-dimethylacrylate, isopropyl 3,3-dimethylacrylate, butyl 3,3-dimethyl-acrylate, acrylamide, N-methyl acrylamide, N,N-dimethyl acrylamide, N-(aminoethyl) methyl acrylamide, and mixtures thereof.
claim 1
3. A composition according to wherein said copolymer comprises:
claim 2
i) from about 20% to about 60% by weight, of methyl methacrylate;
ii) from about 20% to about 60% by weight, of butyl acrylate; and
iii) from about 0.5% to about 20% by weight, of acrylic acid.
4. A composition according to wherein said copolymer comprises;
claim 3
i) from about 40% to about 50% by weight, of methyl methacrylate;
ii) from about 40% to about 50% by weight, of butyl acrylate; and
iii) from about 5% to about 15% by weight, of acrylic acid.
5. A composition according to wherein said copolymer comprises;
claim 4
i) about 43% by weight, of methyl methacrylate;
ii) about 47% by weight, of butyl acrylate; and
iii) about 10% by weight, of acrylic acid.
6. A composition according to wherein from about 1% to about 100% of said acrylic acid units are neutralized.
claim 3
7. A composition according to wherein from about 5% to about 20% of said acrylic acid units are neutralized.
claim 6
8. A composition according to comprising from about 1% to about 10% by weight, of said copolymer.
claim 1
9. A composition according to comprising to about 5% by weight, of said copolymer.
claim 8
10. A composition according to wherein said surfactant has the formula:
claim 1
wherein R4 is —(CH2)zCO2M, —(CH2)zSO3M, —(CH2)zOSO3M, —(CH2)zPO3M, and mixtures thereof; M is hydrogen or a salt forming cation; x and y are each independently an integer from 2 to 6; z is from 1 to 10; R5 is an acyl unit having the formula:
wherein R6 and R8 are each independently hydrogen, C1-C4 alkyl, and mixtures thereof; R7 is C2-C12 alkylene; t is from 0 to 10; the indices w′ and w″ are each independently from 0 to 14, w′+w″=at least 6.
13. A composition according to comprising from about 0.05% to about 2% by weight, of said surfactant.
claim 1
14. A composition according to comprising from about 0.1% to about 0.5% by weight, of said surfactant.
claim 13
15. A composition according to wherein said carrier comprises one or more solvents selected from the group consisting of water, methanol, ethanol, n-propanol, isopropanol, ethylene glycol, propylene glycol, and mixtures thereof.
claim 1
16. A composition according to wherein, said carrier comprises:
claim 15
i) from about 50% to about 90% by weight, of water; and
ii) from about 50% to about 10% by weight, of one or more alcohols selected from methanol, ethanol, or isopropanol.
17. A composition for controlling plant and flower moisture transpiration, said system comprising:
a) from about 2% to about 3% by weight, of a copolymer, said copolymer comprising:
i) from about 40% to about 50% by weight, of methyl methacrylate;
ii) from about 40% to about 50% by weight, of butyl acrylate; and
iii) from about 5% to about 15% by weight, of acrylic acid;
wherein at least 1% of said acrylic acid is neutralized;
b) from about 0.05% to about 2% by weight, of a surfactant having the formula:
wherein R4 is —(CH2)zCO2M, —(CH2)zSO3M, —(CH2)zOSO3M, —(CH2)PO3M, and mixtures thereof; M is hydrogen or a salt forming cation; w′ is an integer from 6 to 14; y is an integer from 2 to 6; z is from 1 to 10; and
c) the balance a carrier comprising:
i) from about 50% to about 90% by weight, of water; and
ii) from about 50% to about 10% by weight, of one or more alcohols selected from methanol, ethanol, or isopropanol.
18. A composition according to wherein said copolymer comprises;
claim 17
i) about 43% by weight, of methyl methacrylate;
ii) about 47% by weight, of butyl acrylate; and
iii) about 10% by weight, of acrylic acid
wherein about 10% of said acrylic acid is neutralized.
19. A composition according to wherein said surfactant is disodium lauroamphodiacetate.
claim 17
20. A method for enhancing the longevity of cut flowers comprising the step of applying to cut flowers an amount of a solution sufficient to cover the surface of said cut flowers, said solution comprising:
a) from about 0.1% to about 20% by weight, of a homopolymer or copolymer comprising monomers having the formula:
wherein each R1 is independently hydrogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; R2 is hydrogen, halogen, C1-C12 alkyl, C1-C12 alkoxy, phenyl, substituted phenyl, benzyl, substituted benzyl, carbocyclic, heterocyclic, and mixtures thereof; X is hydrogen, hydroxyl, halogen, —(CH2)mCH2OH, —(CH2)mCOR, —(CH2)mCH2OCOR′, wherein R is —OR′, —N(R′)2, —(CH2)nN(R″)2, and mixtures thereof; each R′ is independently hydrogen, C1-C8 alkyl, C2-C8 hydroxyalkyl, —(CH2)nN(R″)2, and mixtures thereof; wherein R″ is independently hydrogen, C1-C4 alkyl, and mixtures thereof; the index m is from 0 to 6, the index n is from 2 to 6;
b) from about 0.01% to about 5% by weight, of a surfactant; and
c) the balance carriers and adjunct ingredients.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US09/759,386 US6417139B2 (en) | 2000-01-14 | 2001-01-12 | Compositions and methods for controlling plant and flower moisture transpiration rates |
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US17627600P | 2000-01-14 | 2000-01-14 | |
US09/759,386 US6417139B2 (en) | 2000-01-14 | 2001-01-12 | Compositions and methods for controlling plant and flower moisture transpiration rates |
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US20010044380A1 true US20010044380A1 (en) | 2001-11-22 |
US6417139B2 US6417139B2 (en) | 2002-07-09 |
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US09/759,386 Expired - Fee Related US6417139B2 (en) | 2000-01-14 | 2001-01-12 | Compositions and methods for controlling plant and flower moisture transpiration rates |
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US (1) | US6417139B2 (en) |
EP (1) | EP1259109A1 (en) |
JP (1) | JP2003519635A (en) |
AU (1) | AU2001234447A1 (en) |
CA (1) | CA2395124A1 (en) |
WO (1) | WO2001050854A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012125023A1 (en) * | 2011-03-14 | 2012-09-20 | Patent 06-001 B.V. | Coating for flower heads |
Families Citing this family (1)
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WO2007129303A2 (en) * | 2006-05-02 | 2007-11-15 | Greenoy Ltd. | Method for increasing long-term storage of cut flowers |
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US3157964A (en) | 1962-01-29 | 1964-11-24 | Staley Mfg Co A E | Polymeric compositions and their use for supplying and maintaining plant moisture |
US4094845A (en) | 1975-09-19 | 1978-06-13 | United States Trading International, Inc. | Method of reducing loss of water by transpiration and composition therefor |
US4229433A (en) | 1978-05-30 | 1980-10-21 | Mitsubishi Chemical Industries Limited | Method for controlling viral diseases in plants |
US5201925A (en) | 1986-07-17 | 1993-04-13 | Celaflor Gmbh | Device for transcuticular application of active substances to plants |
US5343653A (en) | 1986-07-17 | 1994-09-06 | Celaflor Gmbii | Device for transcuticular application of active substance to plants |
US5066594A (en) | 1989-05-09 | 1991-11-19 | Dna Plant Technology | Method for the manipulation of pollen in plants |
US5529975A (en) | 1990-03-26 | 1996-06-25 | Allied Colloids Limited | Sprayable agricultural compositions |
GB9106409D0 (en) | 1991-03-26 | 1991-05-15 | Allied Colloids Ltd | Sprayable agricultural compositions |
EP0673197B1 (en) | 1992-12-14 | 2001-08-16 | Buckman Laboratories International, Inc. | Composition and method for increasing the effectiveness of pesticides |
US5385206A (en) | 1993-01-21 | 1995-01-31 | Clearwater, Inc. | Iterated foam process and composition for well treatment |
US5747416A (en) | 1993-07-08 | 1998-05-05 | Mcardle; Blaise | Herbicidal and insecticidal protein-polysaccharide delivery compositions and methods for controlling plant and insect populations |
US5500403A (en) * | 1994-06-14 | 1996-03-19 | Abbott Laboratories | Liquid formulations and process for extending the vase life of cut flowers |
DE4430449C1 (en) | 1994-08-27 | 1996-02-01 | Lohmann Therapie Syst Lts | Sprayable film-forming drug delivery systems for use on plants |
JPH08198702A (en) | 1995-01-31 | 1996-08-06 | Asutoro:Kk | Cut flower freshness-keeping agent and method for keeping freshness of cut flower |
US5635443A (en) | 1995-06-07 | 1997-06-03 | Florasynth, Inc. | Composition to enhance cut flowers |
DE19601430C1 (en) | 1996-01-17 | 1997-04-24 | Lohmann Therapie Syst Lts | Systemic treatment of plants with active agent |
US5789371A (en) | 1997-04-22 | 1998-08-04 | Rhodia Inc. | Amphoteric surfactants having multiple hydrophobic and hydrophilic groups |
US6110451A (en) | 1998-12-18 | 2000-08-29 | Calgon Corporation | Synergistic combination of cationic and ampholytic polymers for cleansing and/or conditioning keratin based substrates |
-
2001
- 2001-01-12 EP EP01906550A patent/EP1259109A1/en not_active Withdrawn
- 2001-01-12 AU AU2001234447A patent/AU2001234447A1/en not_active Abandoned
- 2001-01-12 WO PCT/US2001/001201 patent/WO2001050854A1/en not_active Application Discontinuation
- 2001-01-12 US US09/759,386 patent/US6417139B2/en not_active Expired - Fee Related
- 2001-01-12 JP JP2001551291A patent/JP2003519635A/en not_active Withdrawn
- 2001-01-12 CA CA002395124A patent/CA2395124A1/en not_active Abandoned
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2012125023A1 (en) * | 2011-03-14 | 2012-09-20 | Patent 06-001 B.V. | Coating for flower heads |
EP2508070A1 (en) * | 2011-03-14 | 2012-10-10 | Patent 06-001 B.V. | Coating for flower heads |
CN103533831A (en) * | 2011-03-14 | 2014-01-22 | 专利06-001有限责任公司 | Coating for flower heads |
AU2012229639B2 (en) * | 2011-03-14 | 2015-09-24 | Patent 06-001 B.V. | Coating for flower heads |
CN103533831B (en) * | 2011-03-14 | 2015-12-23 | 专利06-001有限责任公司 | For the dressing of fresh idea |
Also Published As
Publication number | Publication date |
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AU2001234447A1 (en) | 2001-07-24 |
JP2003519635A (en) | 2003-06-24 |
EP1259109A1 (en) | 2002-11-27 |
WO2001050854A1 (en) | 2001-07-19 |
US6417139B2 (en) | 2002-07-09 |
CA2395124A1 (en) | 2001-07-19 |
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