WO2018050211A1 - Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects - Google Patents
Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects Download PDFInfo
- Publication number
- WO2018050211A1 WO2018050211A1 PCT/EP2016/071593 EP2016071593W WO2018050211A1 WO 2018050211 A1 WO2018050211 A1 WO 2018050211A1 EP 2016071593 W EP2016071593 W EP 2016071593W WO 2018050211 A1 WO2018050211 A1 WO 2018050211A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cyclodextrin
- insect repellent
- formulation
- oil
- formulation according
- Prior art date
Links
- 229920000858 Cyclodextrin Polymers 0.000 title claims abstract description 71
- HFHDHCJBZVLPGP-UHFFFAOYSA-N schardinger α-dextrin Chemical compound O1C(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC(C(O)C2O)C(CO)OC2OC(C(C2O)O)C(CO)OC2OC2C(O)C(O)C1OC2CO HFHDHCJBZVLPGP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 239000000203 mixture Substances 0.000 title claims abstract description 55
- 238000009472 formulation Methods 0.000 title claims abstract description 44
- 241000238631 Hexapoda Species 0.000 title claims abstract description 21
- 230000001846 repelling effect Effects 0.000 title description 6
- 239000000077 insect repellent Substances 0.000 claims abstract description 58
- 239000011814 protection agent Substances 0.000 claims abstract 3
- MMOXZBCLCQITDF-UHFFFAOYSA-N N,N-diethyl-m-toluamide Chemical compound CCN(CC)C(=O)C1=CC=CC(C)=C1 MMOXZBCLCQITDF-UHFFFAOYSA-N 0.000 claims description 32
- -1 acetyl- Chemical group 0.000 claims description 18
- WHGYBXFWUBPSRW-FOUAGVGXSA-N beta-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO WHGYBXFWUBPSRW-FOUAGVGXSA-N 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 13
- LMXFTMYMHGYJEI-UHFFFAOYSA-N Menthoglycol Natural products CC1CCC(C(C)(C)O)C(O)C1 LMXFTMYMHGYJEI-UHFFFAOYSA-N 0.000 claims description 12
- HFHDHCJBZVLPGP-RWMJIURBSA-N alpha-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO HFHDHCJBZVLPGP-RWMJIURBSA-N 0.000 claims description 12
- 229920001450 Alpha-Cyclodextrin Polymers 0.000 claims description 7
- 229940043377 alpha-cyclodextrin Drugs 0.000 claims description 7
- 239000001116 FEMA 4028 Substances 0.000 claims description 6
- 229960004853 betadex Drugs 0.000 claims description 6
- 239000004753 textile Substances 0.000 claims description 6
- MGSRCZKZVOBKFT-UHFFFAOYSA-N thymol Chemical compound CC(C)C1=CC=C(C)C=C1O MGSRCZKZVOBKFT-UHFFFAOYSA-N 0.000 claims description 6
- 235000011175 beta-cyclodextrine Nutrition 0.000 claims description 5
- GDSRMADSINPKSL-HSEONFRVSA-N gamma-cyclodextrin Chemical compound OC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](CO)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)CO)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1CO GDSRMADSINPKSL-HSEONFRVSA-N 0.000 claims description 5
- ODLHGICHYURWBS-LKONHMLTSA-N trappsol cyclo Chemical compound CC(O)COC[C@H]([C@H]([C@@H]([C@H]1O)O)O[C@H]2O[C@@H]([C@@H](O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O[C@H]3O[C@H](COCC(C)O)[C@H]([C@@H]([C@H]3O)O)O3)[C@H](O)[C@H]2O)COCC(O)C)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@@H]3O[C@@H]1COCC(C)O ODLHGICHYURWBS-LKONHMLTSA-N 0.000 claims description 5
- GLZPCOQZEFWAFX-UHFFFAOYSA-N Geraniol Chemical compound CC(C)=CCCC(C)=CCO GLZPCOQZEFWAFX-UHFFFAOYSA-N 0.000 claims description 4
- VEMKTZHHVJILDY-UXHICEINSA-N bioresmethrin Chemical compound CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)OCC1=COC(CC=2C=CC=CC=2)=C1 VEMKTZHHVJILDY-UXHICEINSA-N 0.000 claims description 4
- NEHNMFOYXAPHSD-UHFFFAOYSA-N citronellal Chemical compound O=CCC(C)CCC=C(C)C NEHNMFOYXAPHSD-UHFFFAOYSA-N 0.000 claims description 4
- QMVPMAAFGQKVCJ-UHFFFAOYSA-N citronellol Chemical compound OCCC(C)CCC=C(C)C QMVPMAAFGQKVCJ-UHFFFAOYSA-N 0.000 claims description 4
- RRAFCDWBNXTKKO-UHFFFAOYSA-N eugenol Chemical compound COC1=CC(CC=C)=CC=C1O RRAFCDWBNXTKKO-UHFFFAOYSA-N 0.000 claims description 4
- XMGQYMWWDOXHJM-UHFFFAOYSA-N limonene Chemical compound CC(=C)C1CCC(C)=CC1 XMGQYMWWDOXHJM-UHFFFAOYSA-N 0.000 claims description 4
- CDOSHBSSFJOMGT-UHFFFAOYSA-N linalool Chemical compound CC(C)=CCCC(C)(O)C=C CDOSHBSSFJOMGT-UHFFFAOYSA-N 0.000 claims description 4
- 239000003921 oil Substances 0.000 claims description 4
- 235000019198 oils Nutrition 0.000 claims description 4
- SBNFWQZLDJGRLK-RTWAWAEBSA-N (1R)-trans-phenothrin Chemical compound CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 SBNFWQZLDJGRLK-RTWAWAEBSA-N 0.000 claims description 3
- WEEGYLXZBRQIMU-UHFFFAOYSA-N 1,8-cineole Natural products C1CC2CCC1(C)OC2(C)C WEEGYLXZBRQIMU-UHFFFAOYSA-N 0.000 claims description 3
- VZRKEAFHFMSHCD-UHFFFAOYSA-N Ethyl 3-(N-butylacetamido)propionate Chemical compound CCCCN(C(C)=O)CCC(=O)OCC VZRKEAFHFMSHCD-UHFFFAOYSA-N 0.000 claims description 3
- 239000005844 Thymol Substances 0.000 claims description 3
- VXSIXFKKSNGRRO-MXOVTSAMSA-N [(1s)-2-methyl-4-oxo-3-[(2z)-penta-2,4-dienyl]cyclopent-2-en-1-yl] (1r,3r)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropane-1-carboxylate;[(1s)-2-methyl-4-oxo-3-[(2z)-penta-2,4-dienyl]cyclopent-2-en-1-yl] (1r,3r)-3-[(e)-3-methoxy-2-methyl-3-oxoprop-1-enyl Chemical class CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1.CC1(C)[C@H](/C=C(\C)C(=O)OC)[C@H]1C(=O)O[C@@H]1C(C)=C(C\C=C/C=C)C(=O)C1 VXSIXFKKSNGRRO-MXOVTSAMSA-N 0.000 claims description 3
- KVIZNNVXXNFLMU-AIIUZBJTSA-N [2,3,5,6-tetrafluoro-4-(methoxymethyl)phenyl]methyl (1r,3r)-2,2-dimethyl-3-[(e)-prop-1-enyl]cyclopropane-1-carboxylate Chemical compound FC1=C(F)C(COC)=C(F)C(F)=C1COC(=O)[C@H]1C(C)(C)[C@@H]1\C=C\C KVIZNNVXXNFLMU-AIIUZBJTSA-N 0.000 claims description 3
- QLHULAHOXSSASE-UHFFFAOYSA-N butan-2-yl 2-(2-hydroxyethyl)piperidine-1-carboxylate Chemical compound CCC(C)OC(=O)N1CCCCC1CCO QLHULAHOXSSASE-UHFFFAOYSA-N 0.000 claims description 3
- 239000010624 camphor oil Substances 0.000 claims description 3
- 229960000411 camphor oil Drugs 0.000 claims description 3
- 229960000490 permethrin Drugs 0.000 claims description 3
- RLLPVAHGXHCWKJ-UHFFFAOYSA-N permethrin Chemical compound CC1(C)C(C=C(Cl)Cl)C1C(=O)OCC1=CC=CC(OC=2C=CC=CC=2)=C1 RLLPVAHGXHCWKJ-UHFFFAOYSA-N 0.000 claims description 3
- 229960003536 phenothrin Drugs 0.000 claims description 3
- SMKRKQBMYOFFMU-UHFFFAOYSA-N prallethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OC1C(C)=C(CC#C)C(=O)C1 SMKRKQBMYOFFMU-UHFFFAOYSA-N 0.000 claims description 3
- HYJYGLGUBUDSLJ-UHFFFAOYSA-N pyrethrin Natural products CCC(=O)OC1CC(=C)C2CC3OC3(C)C2C2OC(=O)C(=C)C12 HYJYGLGUBUDSLJ-UHFFFAOYSA-N 0.000 claims description 3
- 229940070846 pyrethrins Drugs 0.000 claims description 3
- 239000002728 pyrethroid Substances 0.000 claims description 3
- 229960000790 thymol Drugs 0.000 claims description 3
- DDVNRFNDOPPVQJ-HQJQHLMTSA-N transfluthrin Chemical compound CC1(C)[C@H](C=C(Cl)Cl)[C@H]1C(=O)OCC1=C(F)C(F)=CC(F)=C1F DDVNRFNDOPPVQJ-HQJQHLMTSA-N 0.000 claims description 3
- 239000001490 (3R)-3,7-dimethylocta-1,6-dien-3-ol Substances 0.000 claims description 2
- QMVPMAAFGQKVCJ-SNVBAGLBSA-N (R)-(+)-citronellol Natural products OCC[C@H](C)CCC=C(C)C QMVPMAAFGQKVCJ-SNVBAGLBSA-N 0.000 claims description 2
- CDOSHBSSFJOMGT-JTQLQIEISA-N (R)-linalool Natural products CC(C)=CCC[C@@](C)(O)C=C CDOSHBSSFJOMGT-JTQLQIEISA-N 0.000 claims description 2
- 239000005878 Azadirachtin Substances 0.000 claims description 2
- NPBVQXIMTZKSBA-UHFFFAOYSA-N Chavibetol Natural products COC1=CC=C(CC=C)C=C1O NPBVQXIMTZKSBA-UHFFFAOYSA-N 0.000 claims description 2
- WTEVQBCEXWBHNA-UHFFFAOYSA-N Citral Natural products CC(C)=CCCC(C)=CC=O WTEVQBCEXWBHNA-UHFFFAOYSA-N 0.000 claims description 2
- 239000005770 Eugenol Substances 0.000 claims description 2
- FSYXMFXBRJFYBS-UHFFFAOYSA-N Furamethrin Chemical compound CC1(C)C(C=C(C)C)C1C(=O)OCC1=CC=C(CC#C)O1 FSYXMFXBRJFYBS-UHFFFAOYSA-N 0.000 claims description 2
- 239000005792 Geraniol Substances 0.000 claims description 2
- GLZPCOQZEFWAFX-YFHOEESVSA-N Geraniol Natural products CC(C)=CCC\C(C)=C/CO GLZPCOQZEFWAFX-YFHOEESVSA-N 0.000 claims description 2
- UVMRYBDEERADNV-UHFFFAOYSA-N Pseudoeugenol Natural products COC1=CC(C(C)=C)=CC=C1O UVMRYBDEERADNV-UHFFFAOYSA-N 0.000 claims description 2
- VEHPJKVTJQSSKL-UHFFFAOYSA-N azadirachtin Natural products O1C2(C)C(C3(C=COC3O3)O)CC3C21C1(C)C(O)C(OCC2(OC(C)=O)C(CC3OC(=O)C(C)=CC)OC(C)=O)C2C32COC(C(=O)OC)(O)C12 VEHPJKVTJQSSKL-UHFFFAOYSA-N 0.000 claims description 2
- FTNJWQUOZFUQQJ-IRYYUVNJSA-N azadirachtin A Natural products C([C@@H]([C@]1(C=CO[C@H]1O1)O)[C@]2(C)O3)[C@H]1[C@]23[C@]1(C)[C@H](O)[C@H](OC[C@@]2([C@@H](C[C@@H]3OC(=O)C(\C)=C/C)OC(C)=O)C(=O)OC)[C@@H]2[C@]32CO[C@@](C(=O)OC)(O)[C@@H]12 FTNJWQUOZFUQQJ-IRYYUVNJSA-N 0.000 claims description 2
- JGQFVRIQXUFPAH-UHFFFAOYSA-N beta-citronellol Natural products OCCC(C)CCCC(C)=C JGQFVRIQXUFPAH-UHFFFAOYSA-N 0.000 claims description 2
- 239000010630 cinnamon oil Substances 0.000 claims description 2
- ZDKZHVNKFOXMND-UHFFFAOYSA-N cis-Nepetalactone Natural products O=C1OC=C(C)C2C1C(C)CC2 ZDKZHVNKFOXMND-UHFFFAOYSA-N 0.000 claims description 2
- ZDKZHVNKFOXMND-NBEYISGCSA-N cis-trans-nepetalactone Chemical compound O=C1OC=C(C)[C@@H]2[C@H]1[C@@H](C)CC2 ZDKZHVNKFOXMND-NBEYISGCSA-N 0.000 claims description 2
- 229940043350 citral Drugs 0.000 claims description 2
- 239000010632 citronella oil Substances 0.000 claims description 2
- 229930003633 citronellal Natural products 0.000 claims description 2
- 235000000983 citronellal Nutrition 0.000 claims description 2
- 235000000484 citronellol Nutrition 0.000 claims description 2
- 239000010634 clove oil Substances 0.000 claims description 2
- 239000010642 eucalyptus oil Substances 0.000 claims description 2
- 229940044949 eucalyptus oil Drugs 0.000 claims description 2
- 229960002217 eugenol Drugs 0.000 claims description 2
- XQUXKZZNEFRCAW-UHFFFAOYSA-N fenpropathrin Chemical compound CC1(C)C(C)(C)C1C(=O)OC(C#N)C1=CC=CC(OC=2C=CC=CC=2)=C1 XQUXKZZNEFRCAW-UHFFFAOYSA-N 0.000 claims description 2
- 229940080345 gamma-cyclodextrin Drugs 0.000 claims description 2
- WTEVQBCEXWBHNA-JXMROGBWSA-N geranial Chemical compound CC(C)=CCC\C(C)=C\C=O WTEVQBCEXWBHNA-JXMROGBWSA-N 0.000 claims description 2
- 229940113087 geraniol Drugs 0.000 claims description 2
- 235000001510 limonene Nutrition 0.000 claims description 2
- 229940087305 limonene Drugs 0.000 claims description 2
- 229930007744 linalool Natural products 0.000 claims description 2
- 239000001525 mentha piperita l. herb oil Substances 0.000 claims description 2
- 235000019477 peppermint oil Nutrition 0.000 claims description 2
- MWOOGOJBHIARFG-UHFFFAOYSA-N vanillin Chemical compound COC1=CC(C=O)=CC=C1O MWOOGOJBHIARFG-UHFFFAOYSA-N 0.000 claims description 2
- 235000012141 vanillin Nutrition 0.000 claims description 2
- FGQOOHJZONJGDT-UHFFFAOYSA-N vanillin Natural products COC1=CC(O)=CC(C=O)=C1 FGQOOHJZONJGDT-UHFFFAOYSA-N 0.000 claims description 2
- 229920001353 Dextrin Polymers 0.000 claims 3
- 239000004375 Dextrin Substances 0.000 claims 3
- 235000019425 dextrin Nutrition 0.000 claims 3
- WEEGYLXZBRQIMU-WAAGHKOSSA-N Eucalyptol Chemical compound C1C[C@H]2CC[C@]1(C)OC2(C)C WEEGYLXZBRQIMU-WAAGHKOSSA-N 0.000 claims 1
- PSMFFFUWSMZAPB-UHFFFAOYSA-N Eukalyptol Natural products C1CC2CCC1(C)COCC2(C)C PSMFFFUWSMZAPB-UHFFFAOYSA-N 0.000 claims 1
- 125000000917 azadirachtin group Chemical group 0.000 claims 1
- RECUKUPTGUEGMW-UHFFFAOYSA-N carvacrol Chemical compound CC(C)C1=CC=C(C)C(O)=C1 RECUKUPTGUEGMW-UHFFFAOYSA-N 0.000 claims 1
- HHTWOMMSBMNRKP-UHFFFAOYSA-N carvacrol Natural products CC(=C)C1=CC=C(C)C(O)=C1 HHTWOMMSBMNRKP-UHFFFAOYSA-N 0.000 claims 1
- 235000007746 carvacrol Nutrition 0.000 claims 1
- 235000019993 champagne Nutrition 0.000 claims 1
- RFFOTVCVTJUTAD-UHFFFAOYSA-N cineole Natural products C1CC2(C)CCC1(C(C)C)O2 RFFOTVCVTJUTAD-UHFFFAOYSA-N 0.000 claims 1
- WYXXLXHHWYNKJF-UHFFFAOYSA-N isocarvacrol Natural products CC(C)C1=CC=C(O)C(C)=C1 WYXXLXHHWYNKJF-UHFFFAOYSA-N 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 claims 1
- JQQSUOJIMKJQHS-UHFFFAOYSA-N pentaphene Chemical compound C1=CC=C2C=C3C4=CC5=CC=CC=C5C=C4C=CC3=CC2=C1 JQQSUOJIMKJQHS-UHFFFAOYSA-N 0.000 claims 1
- 229930006978 terpinene Natural products 0.000 claims 1
- 230000007812 deficiency Effects 0.000 abstract 1
- 229960001673 diethyltoluamide Drugs 0.000 description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 20
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 19
- 239000004480 active ingredient Substances 0.000 description 16
- 229940097362 cyclodextrins Drugs 0.000 description 12
- 238000002360 preparation method Methods 0.000 description 12
- 239000013543 active substance Substances 0.000 description 10
- 239000000243 solution Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 10
- 229930006948 p-menthane-3,8-diol Natural products 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 241000255925 Diptera Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011877 solvent mixture Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000002917 insecticide Substances 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 239000012080 ambient air Substances 0.000 description 3
- 230000006735 deficit Effects 0.000 description 3
- 229940079593 drug Drugs 0.000 description 3
- 239000003814 drug Substances 0.000 description 3
- 230000002209 hydrophobic effect Effects 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 238000002844 melting Methods 0.000 description 3
- 230000008018 melting Effects 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000013598 vector Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical group CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- YUGWDVYLFSETPE-JLHYYAGUSA-N Empenthrin Chemical compound CC\C=C(/C)C(C#C)OC(=O)C1C(C=C(C)C)C1(C)C YUGWDVYLFSETPE-JLHYYAGUSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 2
- NQRYJNQNLNOLGT-UHFFFAOYSA-N Piperidine Chemical compound C1CCNCC1 NQRYJNQNLNOLGT-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 238000010668 complexation reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007123 defense Effects 0.000 description 2
- 230000003111 delayed effect Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 229940031576 hydroxypropylbetadex (0.58-0.68 ms) Drugs 0.000 description 2
- 239000006069 physical mixture Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000003223 protective agent Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- YHQGMYUVUMAZJR-UHFFFAOYSA-N α-terpinene Chemical compound CC(C)C1=CC=C(C)CC1 YHQGMYUVUMAZJR-UHFFFAOYSA-N 0.000 description 2
- ZCVAOQKBXKSDMS-AQYZNVCMSA-N (+)-trans-allethrin Chemical compound CC1(C)[C@H](C=C(C)C)[C@H]1C(=O)OC1C(C)=C(CC=C)C(=O)C1 ZCVAOQKBXKSDMS-AQYZNVCMSA-N 0.000 description 1
- ZFHGXWPMULPQSE-SZGBIDFHSA-N (Z)-(1S)-cis-tefluthrin Chemical compound FC1=C(F)C(C)=C(F)C(F)=C1COC(=O)[C@@H]1C(C)(C)[C@@H]1\C=C(/Cl)C(F)(F)F ZFHGXWPMULPQSE-SZGBIDFHSA-N 0.000 description 1
- FMTFEIJHMMQUJI-NJAFHUGGSA-N 102130-98-3 Natural products CC=CCC1=C(C)[C@H](CC1=O)OC(=O)[C@@H]1[C@@H](C=C(C)C)C1(C)C FMTFEIJHMMQUJI-NJAFHUGGSA-N 0.000 description 1
- 241000238876 Acari Species 0.000 description 1
- 241000256111 Aedes <genus> Species 0.000 description 1
- 241000256118 Aedes aegypti Species 0.000 description 1
- 208000000230 African Trypanosomiasis Diseases 0.000 description 1
- 241000256186 Anopheles <genus> Species 0.000 description 1
- 206010003399 Arthropod bite Diseases 0.000 description 1
- 206010004194 Bed bug infestation Diseases 0.000 description 1
- 241001414835 Cimicidae Species 0.000 description 1
- 235000005979 Citrus limon Nutrition 0.000 description 1
- 244000131522 Citrus pyriformis Species 0.000 description 1
- 241000256054 Culex <genus> Species 0.000 description 1
- 125000003535 D-glucopyranosyl group Chemical group [H]OC([H])([H])[C@@]1([H])OC([H])(*)[C@]([H])(O[H])[C@@]([H])(O[H])[C@]1([H])O[H] 0.000 description 1
- 208000001490 Dengue Diseases 0.000 description 1
- 206010012310 Dengue fever Diseases 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 244000166124 Eucalyptus globulus Species 0.000 description 1
- 241000257324 Glossina <genus> Species 0.000 description 1
- 241000257303 Hymenoptera Species 0.000 description 1
- 241000256602 Isoptera Species 0.000 description 1
- WSTYNZDAOAEEKG-UHFFFAOYSA-N Mayol Natural products CC1=C(O)C(=O)C=C2C(CCC3(C4CC(C(CC4(CCC33C)C)=O)C)C)(C)C3=CC=C21 WSTYNZDAOAEEKG-UHFFFAOYSA-N 0.000 description 1
- 241001674048 Phthiraptera Species 0.000 description 1
- 206010040880 Skin irritation Diseases 0.000 description 1
- 206010059516 Skin toxicity Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- 239000005939 Tefluthrin Substances 0.000 description 1
- 241000256856 Vespidae Species 0.000 description 1
- 208000003152 Yellow Fever Diseases 0.000 description 1
- 241000607479 Yersinia pestis Species 0.000 description 1
- 229940024113 allethrin Drugs 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- FTNJWQUOZFUQQJ-NDAWSKJSSA-N azadirachtin A Chemical compound C([C@@H]([C@]1(C=CO[C@H]1O1)O)[C@]2(C)O3)[C@H]1[C@]23[C@]1(C)[C@H](O)[C@H](OC[C@@]2([C@@H](C[C@@H]3OC(=O)C(\C)=C\C)OC(C)=O)C(=O)OC)[C@@H]2[C@]32CO[C@@](C(=O)OC)(O)[C@@H]12 FTNJWQUOZFUQQJ-NDAWSKJSSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- 239000009854 citriodiol Substances 0.000 description 1
- 230000009918 complex formation Effects 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 208000025729 dengue disease Diseases 0.000 description 1
- 238000001212 derivatisation Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000001999 effect on insects Effects 0.000 description 1
- 206010014599 encephalitis Diseases 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 238000004108 freeze drying Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 208000029080 human African trypanosomiasis Diseases 0.000 description 1
- 230000005660 hydrophilic surface Effects 0.000 description 1
- 229950011440 icaridin Drugs 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000000749 insecticidal effect Effects 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 229940027359 ir-3535 Drugs 0.000 description 1
- 239000000171 lavandula angustifolia l. flower oil Substances 0.000 description 1
- 201000004792 malaria Diseases 0.000 description 1
- 230000005541 medical transmission Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 229920001542 oligosaccharide Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 231100000475 skin irritation Toxicity 0.000 description 1
- 230000036556 skin irritation Effects 0.000 description 1
- 231100000438 skin toxicity Toxicity 0.000 description 1
- 201000002612 sleeping sickness Diseases 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
- 230000001988 toxicity Effects 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
- 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
- A01N37/18—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 containing the group —CO—N<, e.g. carboxylic acid amides or imides; Thio analogues thereof
-
- 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
- A01N31/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic oxygen or sulfur compounds
- A01N31/06—Oxygen or sulfur directly attached to a cycloaliphatic ring system
Definitions
- the invention relates to a cyclodextrin-containing formulation for controlling and repelling insects having an improved activity, which can be used for application to the skin of humans or animals, as well as for the treatment of surfaces, in particular of textiles.
- Many insects will be ⁇ seeks as pests for humans and animals because they are regarded as vectors for disease transmission. In addition, they can cause damage to agricultural products and can sometimes be viewed as a massive annoyance when staying outdoors. These insects are ants, bedbugs, sand fleas, dust mites, fleas,
- mosquitoes Flies, lice, termites, wasps and especially mosquitoes are counted. Many mosquitoes can transmit life-threatening diseases as so-called vectors.
- Aedes aegypti is a vector for dengue fever and yellow fever, Anopheles for malaria, Glossina for sleeping sickness and Culex for West Nile disease.
- One way to prevent mosquito bites is to apply insect repellents to the skin.
- insect repellents and insect repellents can be applied to textiles and mosquito nets to shield people from insects that protect themselves with these textiles. Finally, these substances are also applied to surfaces for deterring and eliminating insects, such as house walls.
- the active ingredient DEET (N, -diethyl-m-toluamide) is used as an extremely effective insect repellent, which still serves as a golden standard and is used in concentrations of up to 50%.
- DEET -diethyl-m-toluamide
- insect repellents based on DEET are preferably used with the lowest possible active substance concentration. Unfortunately, the protection time decreases with a decrease in the active ingredient ⁇ concentration sometimes very strong.
- Examples of alternatives to DEET are Icaridin (1- (1-methylpropoxycarbonyl) -2- (2-hydroxyethyl) piperidine), which is synthesized from the plant compound piperidine.
- the protective agent IR3535 (Ethylbutylacetylaminopropio- nat) is used, which, however, compared to the first two drugs mentioned has a much lower protection time.
- natural insect repellents are becoming increasingly popular, which mainly uschhe ⁇ innovative oils include. Many oils such as citronella oil, camphor oil or thymol have a very low protection time due to their high volatility.
- Citriodiol® or PMD (p-menthane-3, 8-diol) mentioned which was originally obtained from the leaves of the lemon eucalyptus and hay ⁇ te is also produced synthetically. It can be achieved with PMD about the same protective effect, as with low DEET concentrations.
- volatile pyrethrins or pyrethroids are used both for defense and control of insects.
- Representatives of these volatile pyrethroids may include, for example, the following substances: empenthrin, profuthrin, transfluthrin, furamethrin, metofluthrin, allethine, prallethrin, phenothrin or permethrin.
- Cyclodextrins are cyclic oligosaccharides which contain six ( ⁇ -), seven ( ⁇ -) or eight ( ⁇ -) linked D- glucopyranose units via ⁇ - (1,4) bonds and which are obtained enzymatically from starch. Due to their ring-shaped molecular structure with a hydrophobic cavity, cyclo- dextrins reversible complexes with hydrophobic guest molecules bil ⁇ the. Due to the hydrophilic surface of the water solubility of cyclodextrins hydrophobins ⁇ ben substances can be greatly improved with their help.
- cyclodextrin complexes Prerequisite for the formation of cyclodextrin complexes are a suitable size and geometry of the guest molecule, so that they at least partially fit into the cavity of the cyclodextrin to form intermolecular interactions can. Lent additional must hydrophobic molecular areas aufwei ⁇ sen the guest molecules.
- cyclodextrin derivatives have been proposed, which can be attached to textiles by means of the reactive group of a derivatization, in order then to be loaded with insect repellents, such as the DEET (Angelo Marco Ranaldo, 2005, EP
- the cyclodextrin is used in a molar excess, which only led to an unzu ⁇ reaching improvement in insect repellent activity and as insect repellent.
- the object of the invention was to improve formulations containing insect repellents or insect repellents together with cyclodextrins in such a way that an increase in the efficacy can be made possible.
- This object is achieved by a formulation containing an insect repellent or an insect repellent, and a cyclodextrin or cyclodextrin derivative, characterized in that the cyclodextrin or cyclodextrin derivative is present in a significant molar deficit against the insect repellent or the insect repellent.
- the cyclodextrin must be applied either equimolar or in excess in relation to the active ingredients in order to achieve the fullest possible complexation of the active ingredients. It turned out that the application of this principle in the case of insects ⁇ protection products and insect repellents did not result in significant improvement in efficacy.
- the majority of the active ingredients are applied to the components by an equimolar use of the cyclodextrins or an excess of the cyclodextrins Surface bound that too low an active ingredient content can be released into the ambient air, so as to cause an effect on the presence of insects.
- a clear deficit of cyclodextrin is applied, a sufficiently large proportion of the active substance can be released into the ambient air immediately after the application of the agent in order to be able to show an effect on insects.
- the proportion of cyclodextrin complex additionally contained in the deficit leads to a continuous release of further active substance, so that the duration of action can be significantly prolonged compared to the pure active substance.
- the ratio of the insect repellent or insect repellent ⁇ agent to the cyclodextrin or the cyclodextrin derivative is preferably in the range between 1: 0.01 and 1: 0.4 (mole:
- the cyclodextrin is preferably a natural cyclodextrin selected from the group consisting of .alpha.-cyclodextrin, .beta.-cyclodextrin and .gamma.-cyclodextrin, and mixtures thereof or a cyclodextrin derivative selected from the group consisting of hydroxypropyl .alpha.-cyclodextrin, Acetyl-a-cyclodextrin, hydroxypropyl- ⁇ -cyclodextrin, hydroxypropyl-y-cyclodextrin, acetyl- ⁇ -
- the cyclodextrin is particularly preferably a-cyclodextrin, .beta.-cyclodextrin or .gamma.-cyclodextrin and mixtures thereof and the cyclodextrin derivative is hydroxypropyl-.alpha.-cyclodextrin, hydroxypropyl-.beta.-cyclodextrin, methyl-.beta. Cyclodextrin or hydroxypropyl-y-cyclodextrin and mixtures thereof.
- the active ingredient comes from the group of the following substances and mixtures thereof: azadirachtin, carpromine, 1,8-cineole, citral, citronellal, citronellol, ethylbutylacetylaminopropionate, eugenol, eucalyptus oil, geraniol, I-caridine, camphor oil, lavender oil, limonene , Linalool, clove oil, nepetalactone, N, -diethyl-m-toluamide, peppermint oil, p-menthane-3,8-diol, ⁇ -terpinene, thymol, vanillin, cinnamon oil and citrusgrass oil.
- azadirachtin carpromine, 1,8-cineole, citral, citronellal, citronellol, ethylbutylacetylaminopropionate, eugenol, eucalyptus oil, geraniol
- insects protective properties of each active ingredient can be used that kills ⁇ Due to its chemical nature insects.
- the insect repellent is preferably a volatile insect repellent. Under preferential ⁇ example is understood to be “volatile” means that the insect repellent has a vapor pressure of greater than 1.0 ⁇ * 10 -7 Pa at 20 ° C.
- the active ingredient is from the group of pyrethrins and pyrethroids and mixtures thereof: empenthrin, esfenfalerate, fenpropathrin, profuthrin, tefluthrin, transfluthrin, furemathrin, metofluthrin, allethrin, prallethrin, phenothrin and permethrin.
- the preparation of the insecticidal composition is carried out in a manner known per se by combining the stated components in the stated amounts into a formulation.
- insect repellent or insect-protecting agents can be either in the form of a physical mixture with used cyclodextrin or used as a combination of cyclodextrin complex and physical mixture.
- the cyclodextrin complexes are preferably prepared by the co-precipitation process, the melting-in process or the paste process.
- the insecticide is dissolved in a solvent and added in said ratio to an aqueous solution of the cyclodextrin or cyclodextrin derivative heated to 20 to 70 ° C, preferably to 50 ° C.
- the solution is stirred for a period of 16 hours and then the solvent is removed.
- the residue is dried at 40.degree.
- the solvent is preferably acetone, methanol or ethanol.
- the cyclodextrin or cyclodextrin derivative is initially charged in water and heated to 20 to 70 ° C, preferably 50 ° C.
- the insecticide is added in portions and stirred for 16 hours at said temperature.
- Not complexed x jewes insecticide is filtered and the complex by freeze-drying Ge ⁇ isolated.
- the cyclodextrin or the cyclodextrin derivative are mixed together with the insecticide in the desired ratio and water added in an amount of 30 weight percent ⁇ the two components.
- the resulting paste is held for a period of eight hours at 70 ° C in a closed glass vessel and mixed hourly by means of a spatula. After the eight hours, the paste is dried and ground for further use.
- the preparation of the formulation according to the invention is carried out by combining said components in the stated amounts to formulate a formulation.
- a formulation for this purpose, either the insulating th cyclodextrin complexes or the pure cyclodextrins incorporated together with the active ingredients by stirring in a solvent mixture that consists of water and alcohol.
- additional formulation ingredients such as preservatives, fragrances or else as moisturizing components can be incorporated as desired.
- these are usually used in insect repellants or insect repellents components in the usual amounts.
- the invention further relates to a method for protection against insects which is characterized in that the invention shown SSE formulation is applied to a surface. ⁇ preference as it is at the surface of a skin surface or wall of a house or a textile surface or other
- the application of the formulation can be done for example by spraying or brushing.
- the method according to the invention makes it possible to defend and combat insects by significantly prolonging the duration of action of the insect repellents and volatile insect repellents, which is made possible by the use of certain cyclodextrins in excess in relation to the active substances. This ensures that some of the active ingredients are released into the ambient air with a delay, which significantly extends the duration of the active ingredients.
- EXAMPLE 1 Preparation of an Insect Repellent Formulation Based on DEET (N, N-Diethyl-m-Toluamide) and the Hydroxypropylated Beta-Cyclodextrin (HP- ⁇ -CD)
- DEET N, N-Diethyl-m-Toluamide
- HP- ⁇ -CD Hydroxypropylated Beta-Cyclodextrin
- Example 3 Preparation of an insect repellent formulation based on DEET (N, N-diethyl-m-toluamide) and beta-cyclodextrin ( ⁇ -CD)
- Example 4 Preparation of an insect repellent formulation based on DEET (N, N-diethyl-m-toluamide) and alpha-cyclodextrin (a-CD)
- DEET N, N-diethyl-m-toluamide
- a-CD alpha-cyclodextrin
- Example 5 Results of mosquito tests A cage test was carried out to examine the formulations for their insect repellent effect.
- cages were used with closable openings at the bottom, which were each occupied by 30-40 female mosquitoes (Aedes aegypty) in Al ⁇ ter from 5-8 days.
- the room temperature during the test was 22.4 ° C ( ⁇ 0.2 ° C) and the humidity was 53% ( ⁇ 3%).
- All formulations were tested on two subjects.
- 200 ⁇ of the formulation was applied to a skin area of about 100 cm 2 .
- the skin was pre-cleaned with isopropanol.
- the first test was started.
- the treated skin surface was held to the cage opening for 2 minutes and all landings and stings documented.
- the active ingredient was considered effective until the second sting. If no abort criterion was present, the test was repeated every 30 minutes.
- Example 6 Preparation of the cyclodextrin complex of DEET (N, N-diethyl-m-toluamide) with alpha-cyclodextrin ( ⁇ -CD) after melting
- a-CD (20 g) is dissolved in 180 ml of water and at 50 ° C. heated.
- DEET N, -diethyl-m-toluamide
- 15.72 g is added portionwise to the cyclodextrin solution.
- the solution is stirred for 16 hours at 50 ° C and then filtered off the cyclodextrin complex formed.
- the precipitate is analytically examined under ⁇ .
- Example 7 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 6
- Example 8 Preparation of the cyclodextrin complex of DEET (N, N-diethyl-m-toluamide) with the hydroxypropylated beta-cyclodextrin (HP- ⁇ -CD) according to the melting in process HP-jss-CD (10 g) is dissolved in 90 ml of water and heated to 50 ° C ⁇ . DEET (N-diethyl-m-toluamide) (3.27 g) is added dropwise to the portions ⁇ cyclodextrin added. The solution is stirred for 16 hours at 50 ° C. and then the cyclodextrin complex formed is filtered off. The precipitate is analyzed analytically.
- Example 9 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 8. To prepare an insect repellent formulation, 9.89 g of the cyclodextrin complex mentioned in Example 1 are mixed together with 52.6 g of ethanol and 40.0 g of water.
- Example 10 Preparation of the cyclodextrin complex of PMD (p-menthane-3,8-diol) with beta-cyclodextrin ( ⁇ -CD) after melting
- ⁇ -CD beta-cyclodextrin
- ⁇ -CD beta-cyclodextrin
- Example 11 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 10 To prepare an insect repellent formulation, 10.0 g of the cyclodextrin complex mentioned in Example 10 are mixed together with 52.6 g of ethanol and 40.0 g of water.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Plant Pathology (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- General Health & Medical Sciences (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Environmental Sciences (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a formulation which contains an insect repellent or an insect protection agent and a cyclodextrin or cyclodextrin derivative, characterized in that said cyclodextrin or cyclodextrin derivative is used in the formulation in a considerable molar deficiency in relation to the insect repellent or insect protection agent.
Description
Cyclodextrin enthaltende Formulierung zur Kontrolle und Abwehr von Insekten mit verbesserter Wirksamkeit Cyclodextrin-containing formulation for control and defense of insects with improved efficacy
Die Erfindung betrifft eine Cyclodextrin enthaltende Formulie- rung zur Kontrolle und Abwehr von Insekten mit einer verbesserten Wirksamkeit, die zur Applikation auf der Haut von Menschen oder Tieren, sowie zur Behandlung von Oberflächen insbesondere von Textilien verwendet werden kann. Viele Insekten werden als Schädlinge für Menschen und Tiere be¬ trachtet, da sie als Vektoren zur Übertragung von Krankheiten gelten. Zusätzlich können sie Schäden an landwirtschaftlichen Produkten verursachen und teils als massive Belästigung bei einem Aufenthalt im Freien angesehen werden. Zu diesen Insekten werden Ameisen, Bettwanzen, Sandflöhe, Staubmilben, Flöhe,The invention relates to a cyclodextrin-containing formulation for controlling and repelling insects having an improved activity, which can be used for application to the skin of humans or animals, as well as for the treatment of surfaces, in particular of textiles. Many insects will be ¬ seeks as pests for humans and animals because they are regarded as vectors for disease transmission. In addition, they can cause damage to agricultural products and can sometimes be viewed as a massive annoyance when staying outdoors. These insects are ants, bedbugs, sand fleas, dust mites, fleas,
Fliegen, Läuse, Termiten, Wespen und vor allem Mücken gezählt. Viele Mücken können als sogenannte Vektoren lebensbedrohende Krankheiten übertragen. So dient Aedes aegypti als Vektor für das Dengue Fieber und das Gelbfieber, Anopheles für Malaria, Glossina für die Schlafkrankheit und Culex für die West-Nil- Krankheit. Eine Möglichkeit, um Mückenstiche zu vermeiden, stellt die Applikation von Insektenabwehrmitteln auf der Haut dar. Zusätzlich können sowohl Insektenabwehrmittel , als auch Insektenschutzmittel auf Textilien und auf Moskitonetze aufge- tragen werden, um Personen vor Insekten abzuschirmen, die sich mit diesen Textilien schützen. Schließlich werden diese Substanzen zur Abschreckung und Beseitigung von Insekten ebenfalls auf Oberflächen aufgetragen, wie beispielsweise Hausinnenwände. Der Wirkstoff DEET (N, -Diethyl-m-toluamide) wird als äußerst effektives Insektenrepellent verwendet, das auch heute noch als goldener Standard dient und in Konzentrationen von bis zu 50% eingesetzt wird. Trotz einiger Studien, die DEET verantwortlich für Enzephalitis bei Kindern machen, als Ursache für Hautirri- tationen unterschiedlichsten Grades benennen oder dessen Neuro-
toxizität dokumentieren, wird es bei Einhaltung gegebener Anwendungshinweise als sicher eingestuft. Bei der Anwendung von DEET ist zudem zu beachten, dass es Kunststoffe löst. Daher werden Insektenschutzmittel auf Basis von DEET mit einer mög- liehst geringen Wirkstoffkonzentration bevorzugt eingesetzt. Leider nimmt die Schutzzeit bei einer Absenkung der Wirkstoff¬ konzentration teils sehr stark ab. Flies, lice, termites, wasps and especially mosquitoes are counted. Many mosquitoes can transmit life-threatening diseases as so-called vectors. Aedes aegypti is a vector for dengue fever and yellow fever, Anopheles for malaria, Glossina for sleeping sickness and Culex for West Nile disease. One way to prevent mosquito bites is to apply insect repellents to the skin. In addition, both insect repellents and insect repellents can be applied to textiles and mosquito nets to shield people from insects that protect themselves with these textiles. Finally, these substances are also applied to surfaces for deterring and eliminating insects, such as house walls. The active ingredient DEET (N, -diethyl-m-toluamide) is used as an extremely effective insect repellent, which still serves as a golden standard and is used in concentrations of up to 50%. Despite some studies that make DEET responsible for encephalitis in children, identify it as the cause of a variety of skin irritations, or toxicity, it is considered safe when given When using DEET, it should also be noted that it dissolves plastics. Therefore, insect repellents based on DEET are preferably used with the lowest possible active substance concentration. Unfortunately, the protection time decreases with a decrease in the active ingredient ¬ concentration sometimes very strong.
Alternativen zu DEET sind beispielsweise Icaridin (1-(1- Methylpropoxycarbonyl ) - 2- (2-hydroxyethyl) piperidin) , das aus dem Pflanzeninhaltsstoff Piperidin synthetisiert wird. Weiter¬ hin wird das Schutzmittel IR3535 (Ethylbutylacetylaminopropio- nat) verwendet, das jedoch gegenüber den beiden ersten genannten Wirkstoffen eine deutlich geringere Schutzzeit aufweist. Zusätzlich zu den synthetischen Substanzen werden natürliche Insektenabwehrmittel immer beliebter, zu denen vor allem äthe¬ rische Öle zählen. Viele Öle wie Citronella Öl, Kampheröl oder auch Thymol haben aufgrund ihrer hohen Flüchtigkeit eine nur sehr geringe Schutzzeit. Eine Ausnahme zeigt das Citriodiol® oder auch PMD (p-Menthan-3 , 8-diol) genannt, das ursprünglich aus den Blättern des Zitroneneukalyptus gewonnen wurde und heu¬ te auch synthetisch hergestellt wird. Es kann mit PMD eine etwa gleiche Schutzwirkung erzielt werden, wie mit geringen DEET- Konzentrationen. Examples of alternatives to DEET are Icaridin (1- (1-methylpropoxycarbonyl) -2- (2-hydroxyethyl) piperidine), which is synthesized from the plant compound piperidine. Next ¬ the protective agent IR3535 (Ethylbutylacetylaminopropio- nat) is used, which, however, compared to the first two drugs mentioned has a much lower protection time. In addition to the synthetic substances natural insect repellents are becoming increasingly popular, which mainly äthe ¬ innovative oils include. Many oils such as citronella oil, camphor oil or thymol have a very low protection time due to their high volatility. An exception is the Citriodiol® or PMD (p-menthane-3, 8-diol) mentioned, which was originally obtained from the leaves of the lemon eucalyptus and hay ¬ te is also produced synthetically. It can be achieved with PMD about the same protective effect, as with low DEET concentrations.
Darüber hinaus werden flüchtige Pyrethrine oder Pyrethroide so- wohl zur Abwehr, als auch zur Kontrolle von Insekten eingesetzt. Zu den Vertretern dieser flüchtigen Pyrethroide können beispielhaft folgende Substanzen genannt werden: Empenthrin, Profluthrin, Transfluthrin, Furamethrin, Metofluthrin, Alleth- rin, Prallethrin, Phenothrin oder auch Permethrin. In addition, volatile pyrethrins or pyrethroids are used both for defense and control of insects. Representatives of these volatile pyrethroids may include, for example, the following substances: empenthrin, profuthrin, transfluthrin, furamethrin, metofluthrin, allethine, prallethrin, phenothrin or permethrin.
Cyclodextrine sind cyclische Oligosaccharide, die sechs ( α- ) , sieben ( ß - ) oder acht (γ- ) , über a- ( 1 , 4 ) -Bindungen miteinander verbundene D-Glucopyranoseeinheiten enthalten und die enzyma- tisch aus Stärke gewonnen werden. Aufgrund ihrer ringförmigen Molekülstruktur mit einem hydrophoben Hohlraum können Cyclo-
dextrine reversible Komplexe mit hydrophoben Gastmolekülen bil¬ den. Aufgrund der hydrophilen Oberfläche der Cyclodextrine lässt sich mit ihrer Hilfe die Wasserlöslichkeit von hydropho¬ ben Substanzen stark verbessern. Gleichzeitig besteht die Mög- lichkeit dazu, die Flüchtigkeit von volatilen Substanzen durch Komplexbildung mit Cyclodextrinen deutlich zu verringern, eine verzögerte Freisetzung zu erzielen, sowie Stabilitäten von labilen Substanzen zu verbessern. Auf Basis der nativen Cyclodextrine wurden zahlreiche Derivate mit unterschiedlichen Ei- genschaften entwickelt. So weisen beispielsweise das Methyl-ß- Cyclodextrin und das Hydroxypropyl-ß-Cyclodextrin eine um ein Vielfaches gesteigerte Wasserlöslichkeit gegenüber dem nativen ß-Cyclodextrin auf. Das gleiche trifft auf Derivate des a- und γ-Cyclodextrins zu. Cyclodextrins are cyclic oligosaccharides which contain six (α-), seven (β-) or eight (γ-) linked D- glucopyranose units via α- (1,4) bonds and which are obtained enzymatically from starch. Due to their ring-shaped molecular structure with a hydrophobic cavity, cyclo- dextrins reversible complexes with hydrophobic guest molecules bil ¬ the. Due to the hydrophilic surface of the water solubility of cyclodextrins hydrophobins ¬ ben substances can be greatly improved with their help. At the same time, it is possible to significantly reduce the volatility of volatile substances by complex formation with cyclodextrins, to achieve a delayed release, and to improve the stability of labile substances. Based on the native cyclodextrins, numerous derivatives with different properties have been developed. Thus, for example, the methyl-.beta.-cyclodextrin and the hydroxypropyl-.beta.-cyclodextrin have a much greater water solubility over the native .beta.-cyclodextrin. The same applies to derivatives of α- and γ-cyclodextrin.
Voraussetzung zur Bildung von Cyclodextrin-Komplexen sind eine geeignete Größe und Geometrie des Gastmoleküls, so dass diese zumindest teilweise in die Kavität des Cyclodextrins passen, um intermolekulare Wechselwirkungen ausbilden zu können. Zusätz- lieh müssen die Gastmoleküle hydrophobe Molekülbereiche aufwei¬ sen. Werden Cyclodextrin-Komplexe in Wasser gelöst, so stellt sich schnell ein Gleichgewicht zwischen freiem Gast, Cyclodext- rin und dem Cyclodextrin-Komplex ein, das die Voraussetzung der verzögerten Wirkstofffreigäbe darstellt. Das Gast-Wirts- Verhältnis im Cyclodextrin-Komplex beträgt meist 1:1. Jedoch können sich auch 2:1, 1:2 und 2:2 Komplexe bilden. Um das Kom- plexierungsverhalten verschiedener Wirkstoffe zu untersuchen, werden Löslichkeitsisothermen mit unterschiedlichen Cyclodext- rin-Konzentrationen angefertigt. Durch die Komplexierung von Wirkstoffen durch Cyclodextrine lässt sich unter anderem die Flüchtigkeit von Substanzen mit hohem Dampfdruck beträchtlich absenken. Im Fall von volatilen Insektenschutzmitteln und In- sektenabwehrmitteln lässt sich dadurch die Schutzzeit deutlich steigern .
In einer Veröffentlichung wurde versucht, herkömmliche Lösemit¬ tel von DEET-enthaltenden Formulierungen durch Cyclodextrine zu ersetzen (Stefan Proniuk, 2002, Journal of Pharmaceutical Science) . Auch wurden Cyclodextrinderivate vorgestellt, die sich mittels der reaktiven Gruppe einer Derivatisierung an Textilien anknüpfen lassen, um dann mit Insektenschutzmitteln, wie dem DEET beladen zu werden (Angelo Marco Ranaldo, 2005, EP Prerequisite for the formation of cyclodextrin complexes are a suitable size and geometry of the guest molecule, so that they at least partially fit into the cavity of the cyclodextrin to form intermolecular interactions can. Lent additional must hydrophobic molecular areas aufwei ¬ sen the guest molecules. When cyclodextrin complexes are dissolved in water, an equilibrium between free guest, cyclodextrin, and the cyclodextrin complex quickly sets in, which is the prerequisite for the delayed release of active substances. The guest-host ratio in the cyclodextrin complex is usually 1: 1. However, 2: 1, 1: 2 and 2: 2 complexes can also form. To investigate the complexing behavior of different drugs, solubility isotherms with different cyclodextrin concentrations are prepared. The complexation of drugs with cyclodextrins, among other things, the volatility of substances with high vapor pressure can be significantly lower. In the case of volatile insect repellents and insect repellents, this can significantly increase the protection time. A publication has tried to replace conventional Lösemit ¬ tel of DEET-containing formulations by cyclodextrins (Stefan Proniuk, 2002, Journal of Pharmaceutical Science). Also, cyclodextrin derivatives have been proposed, which can be attached to textiles by means of the reactive group of a derivatization, in order then to be loaded with insect repellents, such as the DEET (Angelo Marco Ranaldo, 2005, EP
1,841,315 Bl) . In allen genannten Literaturstellen wird das Cyclodextrin in einem molaren Überschuss eingesetzt, was nur zu einer unzu¬ reichenden Verbesserung der Wirksamkeit zur Insektenabwehr und als Insektenschutzmittel führte. Aufgabe der Erfindung war es, Formulierungen, enthaltend Insek- tenabwehrmittel oder Insektenschutzmittel zusammen mit Cyclo- dextrinen dahingehend zu verbessern, dass eine Erhöhung der Wirksamkeit ermöglicht werden kann. Diese Aufgabe wird gelöst durch eine Formulierung enthaltend ein Insektenabwehrmittel oder ein Insektenschutzmittel, sowie ein Cyclodextrin oder Cyclodextrin Derivat dadurch gekennzeichnet, dass das Cyclodextrin oder Cyclodextrin Derivat in einem deutlichen molaren Unterschuss gegenüber dem Insektenabwehrmit- tel oder dem Insektenschutzmittel vorhanden ist. 1,841,315 Bl). In all the cited references, the cyclodextrin is used in a molar excess, which only led to an unzu ¬ reaching improvement in insect repellent activity and as insect repellent. The object of the invention was to improve formulations containing insect repellents or insect repellents together with cyclodextrins in such a way that an increase in the efficacy can be made possible. This object is achieved by a formulation containing an insect repellent or an insect repellent, and a cyclodextrin or cyclodextrin derivative, characterized in that the cyclodextrin or cyclodextrin derivative is present in a significant molar deficit against the insect repellent or the insect repellent.
Bisher wurde davon ausgegangen, dass das Cyclodextrin entweder äquimolar oder in einem Überschuss im Verhältnis zu den Wirkstoffen angewendet werden muss, um eine möglichst vollständige Komplexierung der Wirkstoffe zu erzielen. Es stellte sich heraus, dass die Anwendung dieses Prinzips im Falle von Insekten¬ schutzmitteln und Insektenabwehrmitteln zu keiner deutlichen Verbesserung der Wirksamkeit führte. Der Großteil der Wirkstof¬ fe wird durch einen äquimolaren Einsatz der Cyclodextrine, bzw. einem Überschuss der Cyclodextrine so stark an die applizierte
Oberfläche gebunden, dass ein zu geringer Wirkstoffanteil in die Umgebungsluft abgegeben werden kann, um damit einen Effekt auf anwesende Insekten zu verursachen. Wendet man hingegen einen deutlichen Unterschuss an Cyclodextrin an, dann kann be- reits unmittelbar nach Applikation des Mittels ein ausreichend großer Anteil des Wirkstoffes in die Umgebungsluft abgegeben werden, um eine Wirkung auf Insekten zeigen zu können. Der im Unterschuss zusätzlich enthaltene Anteil an Cyclodextrin- Komplex führt zu einer kontinuierlichen Freisetzung an weiterem Wirkstoff, so dass sich die Wirkdauer gegenüber dem reinen Wirkstoff deutlich verlängern lässt. So far, it has been assumed that the cyclodextrin must be applied either equimolar or in excess in relation to the active ingredients in order to achieve the fullest possible complexation of the active ingredients. It turned out that the application of this principle in the case of insects ¬ protection products and insect repellents did not result in significant improvement in efficacy. The majority of the active ingredients are applied to the components by an equimolar use of the cyclodextrins or an excess of the cyclodextrins Surface bound that too low an active ingredient content can be released into the ambient air, so as to cause an effect on the presence of insects. If, on the other hand, a clear deficit of cyclodextrin is applied, a sufficiently large proportion of the active substance can be released into the ambient air immediately after the application of the agent in order to be able to show an effect on insects. The proportion of cyclodextrin complex additionally contained in the deficit leads to a continuous release of further active substance, so that the duration of action can be significantly prolonged compared to the pure active substance.
Das Verhältnis des Insektenabwehrmittels oder Insektenschutz¬ mittels zu dem Cyclodextrin oder dem Cyclodextrin Derivat liegt vorzugsweise im Bereich zwischen 1 : 0,01 und 1 : 0,4 (Mol :The ratio of the insect repellent or insect repellent ¬ agent to the cyclodextrin or the cyclodextrin derivative is preferably in the range between 1: 0.01 and 1: 0.4 (mole:
Mol), besonders bevorzugt im Bereich zwischen 1 : 0,025 und 1 : 0,25 (Mol : Mol) und davon besonders bevorzugt im Bereich zwi¬ schen 1 : 0,05 und 1 : 0,1. Vorzugsweise handelt es sich bei dem Cyclodextrin um ein nati- ves Cyclodextrin, ausgewählt aus der Gruppe α-Cyclodextrin, ß- Cyclodextrin und γ-Cyclodextrin, und deren Gemische bzw. um ein Cyclodextrin Derivat, ausgewählt aus der Gruppe Hydroxypropyl- α-Cyclodextrin, Acetyl-a-Cyclodextrin, Hydroxypropyl-ß- Cyclodextrin, Hydroxypropyl-y-Cyclodextrin, Acetyl-ß-Mol), more preferably in the range between 1: 0.025 and 1: (0.25 mole: mole), and it particularly preferably in the range Zvi ¬ rule 1: 0.05 and 1: 0.1. The cyclodextrin is preferably a natural cyclodextrin selected from the group consisting of .alpha.-cyclodextrin, .beta.-cyclodextrin and .gamma.-cyclodextrin, and mixtures thereof or a cyclodextrin derivative selected from the group consisting of hydroxypropyl .alpha.-cyclodextrin, Acetyl-a-cyclodextrin, hydroxypropyl-β-cyclodextrin, hydroxypropyl-y-cyclodextrin, acetyl-β-
Cyclodextrin, Methyl-ß-Cyclodextrin und Acetyl-y-Cyclodextrin und deren Gemische. Gemische von Cyclodextrin und/oder Cyclodextrin-Derivat können in jedem Mischungsverhältnis eingesetzt werden . Cyclodextrin, methyl-.beta.-cyclodextrin and acetyl-.gamma.-cyclodextrin and mixtures thereof. Mixtures of cyclodextrin and / or cyclodextrin derivative can be used in any mixing ratio.
Besonders bevorzugt handelt es sich bei dem Cyclodextrin um a- Cyclodextrin, ß-Cyclodextrin oder γ-Cyclodextrin und deren Gemische und bei dem Cyclodextrin-Derivat um Hydroxypropyl-a- Cyclodextrin, Hydroxypropyl-ß-Cyclodextrin, Methyl-ß-
Cyclodextrin oder Hydroxypropyl-y-Cyclodextrin und deren Gemische . The cyclodextrin is particularly preferably a-cyclodextrin, .beta.-cyclodextrin or .gamma.-cyclodextrin and mixtures thereof and the cyclodextrin derivative is hydroxypropyl-.alpha.-cyclodextrin, hydroxypropyl-.beta.-cyclodextrin, methyl-.beta. Cyclodextrin or hydroxypropyl-y-cyclodextrin and mixtures thereof.
Als Wirkstoff mit insektenabwehrenden Eigenschaften (Insekten- abwehrmittel ) kann jeder Wirkstoff verwendet werden, der auf¬ grund seiner chemischen Beschaffenheit eine repellierende Wir¬ kung aufweist. Vorzugsweise stammt der Wirkstoff aus der Gruppe folgender Substanzen und deren Gemische: Azadirachtin, Car- vacrol, 1,8-Cineol, Citral, Citronellal, Citronellol, Ethyl- butylacetylaminopropionat , Eugenol, Eukalyptusöl, Geraniol, I- caridin, Kampheröl, Lavendelöl, Limonen, Linalool, Nelkenöl, Nepetalacton, N, -Diethyl-m-toluamide, Pfefferminzöl , p- Menthan-3, 8-diol, α-Terpinen, Thymol, Vanillin, Zimtöl und Zit- ronengrasöl . As an active ingredient with insect repellent properties (insect repellents) of each active ingredient can be used which has, on account of its chemical nature ¬ a repellent We ¬ effect. Preferably, the active ingredient comes from the group of the following substances and mixtures thereof: azadirachtin, carpromine, 1,8-cineole, citral, citronellal, citronellol, ethylbutylacetylaminopropionate, eugenol, eucalyptus oil, geraniol, I-caridine, camphor oil, lavender oil, limonene , Linalool, clove oil, nepetalactone, N, -diethyl-m-toluamide, peppermint oil, p-menthane-3,8-diol, α-terpinene, thymol, vanillin, cinnamon oil and citrusgrass oil.
Als Wirkstoff mit insektenschützenden Eigenschaften (Insektenschutzmittel) kann jeder Wirkstoff verwendet werden, der auf¬ grund seiner chemischen Beschaffenheit Insekten tötet. Bei dem Insektenschutzmittel handelt es sich vorzugsweise um ein flüch- tiges Insektenschutzmittel. Unter „flüchtig" ist dabei vorzugs¬ weise zu verstehen, dass das Insektenschutzmittel einen Dampf¬ druck von größer als 1,0 * 10 ~7 Pa bei 20°C aufweist. As an active ingredient with insects protective properties (insect repellents) of each active ingredient can be used that kills ¬ Due to its chemical nature insects. The insect repellent is preferably a volatile insect repellent. Under preferential ¬ example is understood to be "volatile" means that the insect repellent has a vapor pressure of greater than 1.0 ¬ * 10 -7 Pa at 20 ° C.
Vorzugsweise stammt der Wirkstoff aus der Gruppe der Pyrethrine und Pyrethroide und deren Gemische: Empenthrin, Esfenfalerat , Fenpropathrin, Profluthrin, Tefluthrin, Transfluthrin, Furame- thrin, Metofluthrin, Allethrin, Prallethrin, Phenothrin und Permethrin . Die Herstellung der Insektiziden Zusammensetzung erfolgt in an sich bekannter Weise durch Kombination der genannten Komponenten in den genannten Mengen zu einer Formulierung. Preferably, the active ingredient is from the group of pyrethrins and pyrethroids and mixtures thereof: empenthrin, esfenfalerate, fenpropathrin, profuthrin, tefluthrin, transfluthrin, furemathrin, metofluthrin, allethrin, prallethrin, phenothrin and permethrin. The preparation of the insecticidal composition is carried out in a manner known per se by combining the stated components in the stated amounts into a formulation.
Dabei können die insektenabwehrenden bzw. insektenschützenden Wirkstoffe entweder in Form einer physikalischen Mischung mit
dem Cyclodextrin verwendet bzw. als Kombination aus Cyclo- dextrinkomplex und physikalischer Mischung eingesetzt werden. In this case, the insect repellent or insect-protecting agents can be either in the form of a physical mixture with used cyclodextrin or used as a combination of cyclodextrin complex and physical mixture.
Zur Herstellung der Cyclodextrin-Komplexe dienen vorzugsweise das Co-Precipitation Verfahren, der Melting-In Prozess oder das Pasten Verfahren. The cyclodextrin complexes are preferably prepared by the co-precipitation process, the melting-in process or the paste process.
Beim Co-Precipitation Verfahren wird das Insektizid in einem Lösemittel gelöst und in dem genannten Verhältnis zu einer auf 20 bis 70°C, vorzugsweise auf 50°C erwärmten wässrigen Lösung des Cyclodextrin oder Cyclodextrin Derivats zugegeben. Die Lösung wird über einen Zeitraum von 16 Stunden gerührt und anschließend das Lösemittel entfernt. Der Rückstand wird bei 40°C getrocknet. Bei dem Lösemittel handelt es sich vorzugsweise um Aceton, Methanol oder Ethanol. In the co-precipitation method, the insecticide is dissolved in a solvent and added in said ratio to an aqueous solution of the cyclodextrin or cyclodextrin derivative heated to 20 to 70 ° C, preferably to 50 ° C. The solution is stirred for a period of 16 hours and then the solvent is removed. The residue is dried at 40.degree. The solvent is preferably acetone, methanol or ethanol.
Beim Melting-In Prozess wird das Cyclodextrin oder Cyclodextrin Derivat in Wasser vorgelegt und auf 20 bis 70°C, vorzugsweise 50°C erwärmt. Das Insektizid wird portionsweise zugegeben und 16 Stunden bei der genannten Temperatur gerührt. Nicht komple- xiertes Insektizid wird abfiltriert und der Komplex durch Ge¬ friertrocknung isoliert. In the Melting-In process, the cyclodextrin or cyclodextrin derivative is initially charged in water and heated to 20 to 70 ° C, preferably 50 ° C. The insecticide is added in portions and stirred for 16 hours at said temperature. Not complexed xiertes insecticide is filtered and the complex by freeze-drying Ge ¬ isolated.
Beim Pastenverfahren werden das Cyclodextrin oder das Cyclo- dextrin Derivat zusammen mit dem Insektizid in dem gewünschten Verhältnis vermengt und Wasser in einem Anteil von 30 Gewichts¬ prozent der beiden Komponenten zugegeben. Die dabei entstandene Paste wird über einen Zeitraum von acht Stunden bei 70°C in einem geschlossenen Glasgefäß gehalten und stündlich mittels ei- nes Spatels durchmischt. Nach Ablauf der acht Stunden wird die Paste getrocknet und für die weitere Anwendung vermählen. When paste method, the cyclodextrin or the cyclodextrin derivative are mixed together with the insecticide in the desired ratio and water added in an amount of 30 weight percent ¬ the two components. The resulting paste is held for a period of eight hours at 70 ° C in a closed glass vessel and mixed hourly by means of a spatula. After the eight hours, the paste is dried and ground for further use.
Die Herstellung der erfindungsgemäßen Formulierung erfolgt durch Kombination der genannten Komponenten in den genannten Mengen zu einer Formulierung. Dazu werden entweder die isolier-
ten Cyclodextrin-Komplexe oder aber die reinen Cyclodextrine zusammen mit den Wirkstoffen durch Rühren in ein Lösemittelgemisch eingearbeitet, dass aus Wasser und Alkohol besteht. Zu¬ sätzlich können nach Belieben weitere Formulierungsbestandteile wie Konservierungsmittel, Duftstoffe oder aber auch feuchtig- keitsspendende Komponenten eingearbeitet werden. Vorzugsweise handelt es sich hierbei um in Insektenabwehrmitteln oder Insektenschutzmitteln üblicherweise eingesetzte Komponenten in den üblichen Mengen. The preparation of the formulation according to the invention is carried out by combining said components in the stated amounts to formulate a formulation. For this purpose, either the insulating th cyclodextrin complexes or the pure cyclodextrins incorporated together with the active ingredients by stirring in a solvent mixture that consists of water and alcohol. ¬ to additionally additional formulation ingredients such as preservatives, fragrances or else as moisturizing components can be incorporated as desired. Preferably, these are usually used in insect repellants or insect repellents components in the usual amounts.
Die Erfindung betrifft ferner ein Verfahren zum Schutz vor Insekten das dadurch gekennzeichnet ist, dass die erfindungsgemä¬ ße Formulierung auf eine Oberfläche aufgetragen wird. Vorzugs¬ weise handelt es sich bei der Oberfläche um eine Hautoberfläche oder eine Hauswand oder eine textile Oberfläche oder andereThe invention further relates to a method for protection against insects which is characterized in that the invention shown SSE formulation is applied to a surface. ¬ preference as it is at the surface of a skin surface or wall of a house or a textile surface or other
Flächen. Die Applikation der Formulierung kann beispielsweise durch Aufsprühen oder Aufstreichen erfolgen. Surfaces. The application of the formulation can be done for example by spraying or brushing.
Das erfindungsgemäße Verfahren ermöglicht die Abwehr und Be- kämpfung von Insekten mit einer deutlichen Verlängerung der Wirkdauer der Insektenabwehrmittel und flüchtigen Insektenschutzmittel, das durch den Einsatz bestimmter Cyclodextrine im Unterschuss im Verhältnis zu den Wirkstoffen ermöglicht wird. Dadurch wird sichergestellt, dass ein Teil der Wirkstoffe ver- zögert in die Umgebungsluft abgegeben wird, wodurch sich die Wirkdauer der Wirkstoffe deutlich verlängern lässt. The method according to the invention makes it possible to defend and combat insects by significantly prolonging the duration of action of the insect repellents and volatile insect repellents, which is made possible by the use of certain cyclodextrins in excess in relation to the active substances. This ensures that some of the active ingredients are released into the ambient air with a delay, which significantly extends the duration of the active ingredients.
Die folgenden Beispiele dienen der weiteren Erläuterung der Erfindung . The following examples serve to further illustrate the invention.
Beispiel 1 Herstellung einer insektenabwehrenden Formulierung auf Basis von DEET (N,N-Diethyl-m-toluamide) und dem hydroxyp- ropylierten beta-Cyclodextrin (HP-ß-CD)
Zur Herstellung einer insektenabwehrenden Formulierung werden 7,39 g DEET (N, -Diethyl-m-toluamide) und 2,82 g HP-ß-CD in ein Lösemittelgemisch, bestehend aus 86,4 g Ethanol und 6,2 g Wasser durch Rühren eingearbeitet. Das molare Verhältnis von Wirk- Stoff zu Cyclodextrin beträgt 1: 0,05. Die Lösung wird 12 Stun¬ den lang bei Raumtemperatur gerührt. EXAMPLE 1 Preparation of an Insect Repellent Formulation Based on DEET (N, N-Diethyl-m-Toluamide) and the Hydroxypropylated Beta-Cyclodextrin (HP-β-CD) To prepare an insect repellent formulation, 7.39 g of DEET (N, -diethyl-m-toluamide) and 2.82 g of HP-β-CD in a solvent mixture consisting of 86.4 g of ethanol and 6.2 g of water by stirring incorporated. The molar ratio of active substance to cyclodextrin is 1: 0.05. The solution is stirred for 12 stun ¬ at room temperature.
Beispiel 2 Herstellung einer insektenabwehrenden Formulierung auf Basis von DEET (N,N-Diethyl-m-toluamide) und dem methylier- ten beta-Cyclodextrin (M-ß-CD) Example 2 Preparation of an Insect Repellent Formulation Based on DEET (N, N-Diethyl-m-Toluamide) and the Methylated Beta-Cyclodextrin (M-β-CD)
Zur Herstellung einer insektenabwehrenden Formulierung werden 7,39 g DEET (N, -Diethyl-m-toluamide) und 2,53 g M-ß-CD in ein Lösemittelgemisch, bestehend aus 86,4 g Ethanol und 6,2 g Was- ser durch Rühren eingearbeitet. Das molare Verhältnis von Wirk¬ stoff zu Cyclodextrin beträgt 1: 0,05. Die Lösung wird 12 Stun¬ den lang bei Raumtemperatur gerührt. To prepare an insect repellent formulation, 7.39 g of DEET (N, -diethyl-m-toluamide) and 2.53 g of M-β-CD are introduced into a solvent mixture consisting of 86.4 g of ethanol and 6.2 g of water incorporated by stirring. The molar ratio of active substance to cyclodextrin ¬ is 1: 0.05. The solution is stirred for 12 stun ¬ at room temperature.
Beispiel 3 Herstellung einer insektenabwehrenden Formulierung auf Basis von DEET (N,N-Diethyl-m-toluamide) und beta- Cyclodextrin (ß-CD) Example 3 Preparation of an insect repellent formulation based on DEET (N, N-diethyl-m-toluamide) and beta-cyclodextrin (β-CD)
Zur Herstellung einer insektenabwehrenden Formulierung werden 7,39 g DEET (N, -Diethyl-m-toluamide) und 2,19 g ß-CD in ein Lösemittelgemisch, bestehend aus 86,4 g Ethanol und 6,2 g Was¬ ser durch Rühren eingearbeitet. Das molare Verhältnis von Wirk¬ stoff zu Cyclodextrin beträgt 1: 0,05. Die Lösung wird 12 Stun¬ den lang bei Raumtemperatur gerührt. To prepare an insect repellent formulation, 7.39 g of DEET (N, -diethyl-m-toluamide) and 2.19 g of β-CD are mixed in a solvent mixture consisting of 86.4 g of ethanol and 6.2 g of water by stirring incorporated. The molar ratio of active substance to cyclodextrin ¬ is 1: 0.05. The solution is stirred for 12 stun ¬ at room temperature.
Beispiel 4 Herstellung einer insektenabwehrenden Formulierung auf Basis von DEET (N,N-Diethyl-m-toluamide) und alpha- Cyclodextrin (a-CD)
Zur Herstellung einer insektenabwehrenden Formulierung werden 7,39 g DEET (N, -Diethyl-m-toluamide) und 1,88 g ß-CD in ein Lösemittelgemisch, bestehend aus 86,4 g Ethanol und 6,2 g Wasser durch Rühren eingearbeitet. Das molare Verhältnis von Wirk- Stoff zu Cyclodextrin beträgt 1: 0,05. Die Lösung wird 12 Stun¬ den lang bei Raumtemperatur gerührt. Example 4 Preparation of an insect repellent formulation based on DEET (N, N-diethyl-m-toluamide) and alpha-cyclodextrin (a-CD) To prepare an insect repellent formulation, 7.39 g of DEET (N, -diethyl-m-toluamide) and 1.88 g of β-CD are incorporated into a solvent mixture consisting of 86.4 g of ethanol and 6.2 g of water by stirring. The molar ratio of active substance to cyclodextrin is 1: 0.05. The solution is stirred for 12 stun ¬ at room temperature.
Beispiel 5 Ergebnisse der Mückentests Zur Untersuchung der Formulierungen auf ihre insektenabwehrende Wirkung wurde ein Käfigtest durchgeführt. Dazu wurden Käfige mit verschließbaren Öffnungen an der Unterseite verwendet, die jeweils mit 30-40 weiblichen Stechmücken (Aedes aegypty) im Al¬ ter von 5-8 Tagen besetzt wurden. Die Raumtemperatur lag wäh- rend des Tests bei 22,4°C (±0,2°C) und die Luftfeuchtigkeit bei 53% (± 3%) . Alle Formulierungen wurden an zwei Probanden getestet. Dazu wurden 200 μΐ der Formulierung auf eine Hautfläche von etwa 100 cm2 aufgetragen. Die Haut wurde vorab mit Isopro- panol gereinigt. Nach einer Einwirkzeit von 5 Minuten wurde der erste Test begonnen. Dazu wurde die behandelte Hautoberfläche 2 Minuten lang an die Käfigöffnung gehalten und alle Landungen und Stiche dokumentiert. Der Wirkstoff wurde bis zum zweiten Stich als wirksam gewertet. Lag kein Abbruchkriterium vor, wurde der Test alle 30 Minuten wiederholt. Example 5 Results of mosquito tests A cage test was carried out to examine the formulations for their insect repellent effect. For this purpose, cages were used with closable openings at the bottom, which were each occupied by 30-40 female mosquitoes (Aedes aegypty) in Al ¬ ter from 5-8 days. The room temperature during the test was 22.4 ° C (± 0.2 ° C) and the humidity was 53% (± 3%). All formulations were tested on two subjects. For this purpose, 200 μΐ of the formulation was applied to a skin area of about 100 cm 2 . The skin was pre-cleaned with isopropanol. After a reaction time of 5 minutes, the first test was started. For this purpose, the treated skin surface was held to the cage opening for 2 minutes and all landings and stings documented. The active ingredient was considered effective until the second sting. If no abort criterion was present, the test was repeated every 30 minutes.
Als Referenz für die Tests diente eine Formulierung, die zu 7,4% aus DEET (N, -Diethyl-m-toluamide, zu 86,4% aus Ethanol und zu 6,2% aus Wasser bestand. Zusätzlich wurden die insektenabwehrenden Formulierungen der Beispiele 1, 2, 3 und 4 getestet. Tab. 1 zeigt die beobachtete Schutzzeit. As reference for the tests, a formulation was used which consisted of 7.4% DEET (N, -diethyl-m-toluamide, 86.4% ethanol and 6.2% water.) In addition, the insect repellent formulations were used Examples 1, 2, 3 and 4. Table 1 shows the observed protection time.
Tab.1 Table 1
Gemittelte Verbesserung Schutzzeit in der DEET- Stunden Formulierung Averaged improvement protection time in the DEET hours formulation
Das Testergebnis zeigt deutliche Steigerung der Insekten- abwehrenden Wirkung um zu 80%. Beispiel 6 Herstellung des Cyclodextrinkomplexes von DEET (N,N- Diethyl-m-toluamide) mit alpha-Cyclodextrin (α-CD) nach dem Melting In Verfahren a-CD (20 g) wird in 180 ml Wasser gelöst und auf 50°C erwärmt. DEET (N, -Diethyl-m-toluamide) (15,72 g) wird portionsweise zu der Cyclodextrinlösung zugegeben. Die Lösung wird 16 Stunden bei 50°C gerührt und anschließend der gebildete Cyclodextrin- Komplex abfiltriert. Der Niederschlag wird analytisch unter¬ sucht. Es werden 35,0 g Cyclodextrin Komplex gewonnen, der ei- nen Gastgehalt von 44,0% N, -Diethyl-m-toluamide aufweist. Der Wassergehalt beträgt 1,2% und der Gehalt an a-CD 54,8%. Das entspricht einem Molverhältnis von 1 : 0,25 (N, N-Diethyl-m- toluamide : α-CD) . Beispiel 7 Herstellung einer insektenabwehrenden Formulierung auf Basis des bei Beispiel 6 gebildeten Cyclodextrinkomplexes The test result shows a significant increase of insect repelling effect by 80%. Example 6 Preparation of the cyclodextrin complex of DEET (N, N-diethyl-m-toluamide) with alpha-cyclodextrin (α-CD) after melting In process a-CD (20 g) is dissolved in 180 ml of water and at 50 ° C. heated. DEET (N, -diethyl-m-toluamide) (15.72 g) is added portionwise to the cyclodextrin solution. The solution is stirred for 16 hours at 50 ° C and then filtered off the cyclodextrin complex formed. The precipitate is analytically examined under ¬. There are obtained 35.0 g of cyclodextrin complex having a guest content of 44.0% N, -Diethyl-m-toluamides. The water content is 1.2% and the content of a-CD 54.8%. This corresponds to a molar ratio of 1: 0.25 (N, N-diethyl-m-toluamide: α-CD). Example 7 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 6
Zur Herstellung einer insektenabwehrenden Formulierung werden 9,42 g des bei Beispiel 6 genannten Cyclodextrinkomplexes zu- sammen mit 75 g Ethanol und 25 g Wasser vermengt. To prepare an insect repellent formulation, 9.42 g of the cyclodextrin complex mentioned in Example 6 are mixed together with 75 g of ethanol and 25 g of water.
Beispiel 8 Herstellung des Cyclodextrinkomplexes von DEET (N,N- Diethyl-m-toluamide) mit dem hydroxypropylierten beta- Cyclodextrin (HP-ß-CD) nach dem Melting In Verfahren
HP-jß-CD (10 g) wird in 90 ml Wasser gelöst und auf 50°C er¬ wärmt. DEET (N, -Diethyl-m-toluamide) (3,27 g) wird portions¬ weise zu der Cyclodextrinlösung zugegeben. Die Lösung wird 16 Stunden bei 50 °C gerührt und anschließend der gebildete Cyclo- dextrin-Komplex abfiltriert. Der Niederschlag wird analytisch untersucht. Es werden 13,0 g Cyclodextrin Komplex gewonnen, der einen Gastgehalt von 24,4% N, -Diethyl-m-toluamide aufweist. Der Wassergehalt beträgt 0,8% und der Gehalt an a-CD 74,8%. Das entspricht einem Molverhältnis von 1 : 0,4 (N, N-Diethyl-m- toluamide : HP- -CD) . Example 8 Preparation of the cyclodextrin complex of DEET (N, N-diethyl-m-toluamide) with the hydroxypropylated beta-cyclodextrin (HP-β-CD) according to the melting in process HP-jss-CD (10 g) is dissolved in 90 ml of water and heated to 50 ° C ¬ . DEET (N-diethyl-m-toluamide) (3.27 g) is added dropwise to the portions ¬ cyclodextrin added. The solution is stirred for 16 hours at 50 ° C. and then the cyclodextrin complex formed is filtered off. The precipitate is analyzed analytically. There are obtained 13.0 g of cyclodextrin complex having a guest content of 24.4% N, -Diethyl-m-toluamides. The water content is 0.8% and the content of a-CD 74.8%. This corresponds to a molar ratio of 1: 0.4 (N, N-diethyl-m-toluamide: HP- CD).
Beispiel 9 Herstellung einer insektenabwehrenden Formulierung auf Basis des bei Beispiel 8 gebildeten Cyclodextrinkomplexes Zur Herstellung einer insektenabwehrenden Formulierung werden 9,89 g des bei Beispiel 1 genannten Cyclodextrinkomplexes zu¬ sammen mit 52,6 g Ethanol und 40,0 g Wasser vermengt. Example 9 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 8. To prepare an insect repellent formulation, 9.89 g of the cyclodextrin complex mentioned in Example 1 are mixed together with 52.6 g of ethanol and 40.0 g of water.
Beispiel 10 Herstellung des Cyclodextrinkomplexes von PMD (p- Menthan-3, 8-diol) mit beta-Cyclodextrin (ß-CD) nach dem Melting In Verfahren ß-CD (8 g) wird in 400 ml Wasser gelöst und auf 50°C erwärmt. PMD (p-Menthan-3, 8-diol) (4,85 g) wird portionsweise zu der Cyc- lodextrinlösung zugegeben. Die Lösung wird 16 Stunden bei 50°C gerührt und anschließend der gebildete Cyclodextrin-Komplex ab¬ filtriert. Der Niederschlag wird analytisch untersucht. Es wer¬ den 12,46 g Cyclodextrin Komplex gewonnen, der einen Gastgehalt von 38,9% p-Menthan-3, 8-diol aufweist. Der Wassergehalt beträgt 1,1% und der Gehalt an ß-CD 60,0%. Das entspricht einem Molver¬ hältnis von 1 : 0,25 (p-Menthan-3, 8-diol : ß-CD). Example 10 Preparation of the cyclodextrin complex of PMD (p-menthane-3,8-diol) with beta-cyclodextrin (β-CD) after melting In process β-CD (8 g) is dissolved in 400 ml of water and heated to 50 ° C heated. PMD (p-menthane-3, 8-diol) (4.85 g) is added portionwise to the cycodextrin solution. The solution is stirred for 16 hours at 50 ° C and then filtered from the cyclodextrin complex formed ¬ . The precipitate is analyzed analytically. It ¬ the 12.46 g cyclodextrin complex obtained, which has a guest content of 38.9% p-menthane-3, 8-diol. The water content is 1.1% and the content of β-CD 60.0%. This corresponds to a Molver ¬ ratio of 1: 0.25 (p-menthane-3, 8-diol: .beta.-CD).
Beispiel 11 Herstellung einer insektenabwehrenden Formulierung auf Basis des bei Beispiel 10 gebildeten Cyclodextrinkomplexes
Zur Herstellung einer insektenabwehrenden Formulierung werden 10,0 g des bei Beispiel 10 genannten Cyclodextrinkomplexes zu¬ sammen mit 52,6 g Ethanol und 40,0 g Wasser vermengt.
Example 11 Preparation of an insect repelling formulation based on the cyclodextrin complex formed in Example 10 To prepare an insect repellent formulation, 10.0 g of the cyclodextrin complex mentioned in Example 10 are mixed together with 52.6 g of ethanol and 40.0 g of water.
Claims
Patentansprüche claims
Formulierung enthaltend ein Insektenabwehrmittel oder ein Insektenschutzmittel sowie ein Cyclodextrin oder Cyclo¬ dextrin Derivat dadurch gekennzeichnet, dass das Cyclo¬ dextrin oder Cyclodextrin Derivat in einem deutlichen molaren Unterschuss gegenüber dem Insektenabwehrmittel oder dem Insektenschutzmittel vorhanden ist. Formulation containing an insect repellent or insect repellent and a cyclodextrin or cyclo ¬ dextrin derivative characterized in that the Cyclo ¬ dextrin or cyclodextrin derivative is present in a substantial molar excess over the insect repellent or insect repellent.
Formulierung gemäß Anspruch 1 dadurch gekennzeichnet, dass Insektenabwehrmittel oder Insektenschutzmittel zu Cyclo¬ dextrin oder Cyclodextrin Derivat in einem Verhältnis zwischen 1 : 0,01 und 1 : 0,4 (Mol : Mol) vorliegt. 3. Formulierung gemäß Anspruch 1 oder 2 dadurch gekennzeichnet, dass das Cyclodextrin oder das Cyclodextrin Derivat ausgewählt ist aus der Gruppe α-Cyclodextrin, ß- Cyclodextrin, γ-Cyclodextrin, Hydroxypropyl-a- Cyclodextrin, Acetyl-a-Cyclodextrin, Hydroxypropyl-ß- Cyclodextrin, Hydroxypropyl-y-Cyclodextrin, Acetyl-ß-A formulation according to claim 1, characterized in that insect repellent or insect repellent to Cyclo ¬ dextrin or cyclodextrin derivative in a ratio between 1: 0.01 and 1: 0.4 (mol: mol) is present. 3. A formulation according to claim 1 or 2, characterized in that the cyclodextrin or the cyclodextrin derivative is selected from the group α-cyclodextrin, ß-cyclodextrin, γ-cyclodextrin, hydroxypropyl-a-cyclodextrin, acetyl-a-cyclodextrin, hydroxypropyl-ß - cyclodextrin, hydroxypropyl-y-cyclodextrin, acetyl-ß-
Cyclodextrin, Methyl-ß-Cyclodextrin und Acetyl-γ- Cyclodextrin und deren Gemischen. Cyclodextrin, methyl-.beta.-cyclodextrin and acetyl-.gamma.-cyclodextrin and mixtures thereof.
Formulierung gemäß Anspruch 1, 2 oder 3 dadurch gekennzeichnet, dass das Insektenabwehrmittel ausgewählt ist aus der Gruppe Azadirachtin, Carvacrol, 1,8-Cineol, Citral, Citronellal, Citronellol, Ethylbutylacetylaminopropionat , Eugenol, Eukalyptusöl, Geraniol, Icaridin, Kampheröl, La- vendelöl, Limonen, Linalool, Nelkenöl, Nepetalacton, N,N- Diethyl-m-toluamide, Pfefferminzöl , p-Menthan-3, 8-diol, a- Terpinen, Thymol, Vanillin, Zimtöl, Zitronengrasöl und de¬ ren Gemischen. A formulation according to claim 1, 2 or 3, characterized in that the insect repellent is selected from azadirachtin, carvacrol, 1,8-cineol, citral, citronellal, citronellol, ethylbutylacetylaminopropionate, eugenol, eucalyptus oil, geraniol, icaridine, camphor oil, level oil , limonene, linalool, clove oil, nepetalactone, N, N-diethyl-m-toluamide, peppermint oil, p-menthane-3, 8-diol, a- terpinene, thymol, vanillin, cinnamon oil, citronella oil and de ¬ ren mixtures.
5. Formulierung gemäß einem der Ansprüche 1 bis 4 dadurch ge- kennzeichnet, dass das Insektenschutzmittel ausgewählt ist
aus der Gruppe der Pyrethrine und Pyrethroide und deren Gemischen . 5. A formulation according to any one of claims 1 to 4 characterized in that the insect repellent is selected from the group of pyrethrins and pyrethroids and their mixtures.
6. Formulierung gemäß Anspruch 5 dadurch gekennzeichnet, dass das Insektenschutzmittel ausgewählt ist aus der Gruppe Em- penthrin, Esfenfalerat , Fenpropathrin, Profluthrin, Te- fluthrin, Transfluthrin, Furamethrin, Metofluthrin, Al- lethrin, Prallethrin, Phenothrin und Permethrin. 6. Formulation according to claim 5, characterized in that the insect repellent is selected from the group pentaphene, esfenfalerate, fenpropathrin, profuthrin, toluthrin, transfluthrin, furamethrin, metofluthrin, al-lethrin, prallethrin, phenothrin and permethrin.
Verfahren zur Herstellung einer Formulierung gemäß Anspruch 1 bis 6 dadurch gekennzeichnet, dass Insektenab- wehrmittel oder Insektenschutzmittel und Cyclodextrin oder Cyclodextrin Derivat in einem deutlichen molaren Unter- schuss gegenüber Insektenabwehrmittel oder flüchtiges In¬ sektenschutzmittel in an sich bekannter Weise zu einer Formulierung vermischt werden. A process for preparing a formulation according to claim 1 to 6 characterized in that the insect repellent or insect repellent and cyclodextrin or cyclodextrin derivative in a substantial molar sub excess over insect repellent or volatile In ¬ champagne protection agents are mixed in known manner to a formulation.
Verfahren zum Schutz vor Insekten, dadurch gekennzeichnet dass eine Formulierung gemäß Anspruch 1 bis 6 auf eine Oberfläche aufgetragen wird. Method for protection against insects, characterized in that a formulation according to claims 1 to 6 is applied to a surface.
Verfahren gemäß Anspruch 8 dadurch gekennzeichnet, dass e sich bei der Oberfläche um eine Hautoberfläche, eine tex- tile Oberfläche oder um eine Hauswand handelt.
A method according to claim 8, characterized in that e at the surface is a skin surface, a textile tile surface or a house wall.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2016/071593 WO2018050211A1 (en) | 2016-09-13 | 2016-09-13 | Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2016/071593 WO2018050211A1 (en) | 2016-09-13 | 2016-09-13 | Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018050211A1 true WO2018050211A1 (en) | 2018-03-22 |
Family
ID=56896581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/071593 WO2018050211A1 (en) | 2016-09-13 | 2016-09-13 | Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2018050211A1 (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108378081A (en) * | 2018-04-28 | 2018-08-10 | 湖北民族学院 | A kind of natural Chinese medicinal herb mosquito repellent gelling agent and preparation method thereof |
CN111213679A (en) * | 2020-02-27 | 2020-06-02 | 无锡迈莱博生物科技有限公司 | Plant acarus killing bacteriostatic solution and preparation method and application thereof |
EP3763212A1 (en) | 2019-07-11 | 2021-01-13 | SanderStrothmann GmbH | Arthropoda repellent composition |
CN113967266A (en) * | 2021-11-12 | 2022-01-25 | 北京斯瑞朗文生物科技有限公司 | N, N-diethyl-2-hydroxy-2-phenylacetamide cyclodextrin inclusion compound and preparation method and application thereof |
WO2022105987A1 (en) | 2020-11-17 | 2022-05-27 | Wacker Chemie Ag | Formulations containing cyclodextrin for improving the effectiveness of fatty acids as non-selective herbicides |
WO2022156882A1 (en) | 2021-01-19 | 2022-07-28 | Wacker Chemie Ag | Formulations containing cyclodextrin and fatty acids for controlling and repelling insects with improved effect |
CN115590016A (en) * | 2022-10-26 | 2023-01-13 | 中南大学湘雅三医院(Cn) | A kind of tumor sample storage device |
WO2023006190A1 (en) | 2021-07-28 | 2023-02-02 | Wacker Chemie Ag | Cyclodextrin-containing formulations for volatile substances with additives in order to maintain constant release |
US12329174B2 (en) | 2021-08-01 | 2025-06-17 | Comestaag Llc | Treatments, methods, and kits to protect agricultural products from wildfire smoke |
US12329164B2 (en) | 2020-09-14 | 2025-06-17 | Insight Pharmaceuticals Corporation | Repellant formulation and method |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3846551A (en) * | 1972-11-20 | 1974-11-05 | Teijin Ltd | Insecticidal and acaricidal composition and process for controlling pests |
DE202004014465U1 (en) * | 2004-09-15 | 2004-12-30 | Ahrenshof Vermögensverwaltungs GmbH | Insect repellent active against stinging or sucking species is based on a natural essential oil and also contains beta-cyclodextrin |
WO2006077604A1 (en) * | 2005-01-19 | 2006-07-27 | Pointex S.P.A. | Inclusion complex between a cyclodextrin derivative and a repellent substance towards harmful and/or bothering insects, formulations and uses thereof |
WO2009090140A1 (en) * | 2008-01-17 | 2009-07-23 | Wacker Chemie Ag | Aqueous emulsion containing a cyclodextrin derivative, a perfume, and a polysorbate |
-
2016
- 2016-09-13 WO PCT/EP2016/071593 patent/WO2018050211A1/en active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3846551A (en) * | 1972-11-20 | 1974-11-05 | Teijin Ltd | Insecticidal and acaricidal composition and process for controlling pests |
DE202004014465U1 (en) * | 2004-09-15 | 2004-12-30 | Ahrenshof Vermögensverwaltungs GmbH | Insect repellent active against stinging or sucking species is based on a natural essential oil and also contains beta-cyclodextrin |
WO2006077604A1 (en) * | 2005-01-19 | 2006-07-27 | Pointex S.P.A. | Inclusion complex between a cyclodextrin derivative and a repellent substance towards harmful and/or bothering insects, formulations and uses thereof |
WO2009090140A1 (en) * | 2008-01-17 | 2009-07-23 | Wacker Chemie Ag | Aqueous emulsion containing a cyclodextrin derivative, a perfume, and a polysorbate |
Non-Patent Citations (2)
Title |
---|
PRONIUK STEFAN ET AL: "Topical formulation studies with DEET (N,N-diethyl-3-methylbenzamide) and cyclodextrins", JOURNAL OF PHARMACEUTICAL SCIENCES, AMERICAN PHARMACEUTICAL ASSOCIATION, WASHINGTON, US, vol. 91, no. 1, 1 January 2002 (2002-01-01), pages 101 - 110, XP009191964, ISSN: 0022-3549 * |
USHA RASHMI BHASKARA-AMRIT ET AL: "APPLICATIONS OF [beta] -CYCLODEXTRINS IN TEXTILES", AUTEX RESEARCH JOURNAL, vol. 11, no. 4, 1 December 2011 (2011-12-01), pages 94 - 101, XP055308823 * |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108378081A (en) * | 2018-04-28 | 2018-08-10 | 湖北民族学院 | A kind of natural Chinese medicinal herb mosquito repellent gelling agent and preparation method thereof |
EP3763212A1 (en) | 2019-07-11 | 2021-01-13 | SanderStrothmann GmbH | Arthropoda repellent composition |
WO2021005206A1 (en) | 2019-07-11 | 2021-01-14 | Sanderstrothmann Gmbh | Arthropoda repellent composition |
US11503831B2 (en) | 2019-07-11 | 2022-11-22 | Sanderstrothmann Gmbh | Arthropoda repellent composition |
CN111213679A (en) * | 2020-02-27 | 2020-06-02 | 无锡迈莱博生物科技有限公司 | Plant acarus killing bacteriostatic solution and preparation method and application thereof |
US12329164B2 (en) | 2020-09-14 | 2025-06-17 | Insight Pharmaceuticals Corporation | Repellant formulation and method |
US12342828B2 (en) | 2020-09-14 | 2025-07-01 | Insight Pharmaceuticals Corporation | Repellant formulation and method |
US12329163B2 (en) | 2020-09-14 | 2025-06-17 | Insight Pharmaceuticals Corporation | Repellant formulation and method |
WO2022105987A1 (en) | 2020-11-17 | 2022-05-27 | Wacker Chemie Ag | Formulations containing cyclodextrin for improving the effectiveness of fatty acids as non-selective herbicides |
WO2022156882A1 (en) | 2021-01-19 | 2022-07-28 | Wacker Chemie Ag | Formulations containing cyclodextrin and fatty acids for controlling and repelling insects with improved effect |
WO2023006190A1 (en) | 2021-07-28 | 2023-02-02 | Wacker Chemie Ag | Cyclodextrin-containing formulations for volatile substances with additives in order to maintain constant release |
US12329174B2 (en) | 2021-08-01 | 2025-06-17 | Comestaag Llc | Treatments, methods, and kits to protect agricultural products from wildfire smoke |
CN113967266A (en) * | 2021-11-12 | 2022-01-25 | 北京斯瑞朗文生物科技有限公司 | N, N-diethyl-2-hydroxy-2-phenylacetamide cyclodextrin inclusion compound and preparation method and application thereof |
CN115590016A (en) * | 2022-10-26 | 2023-01-13 | 中南大学湘雅三医院(Cn) | A kind of tumor sample storage device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2018050211A1 (en) | Cyclodextrin-containing formulation with improved efficacy for controlling and repelling insects | |
DE2357826C3 (en) | Stabilized Pyrethroid Based Insecticide and Acaricide Teijin Ltd .; Dai Nihon Jochugiku Co, Ltd .; Osaka (Japan) | |
DE69819724T2 (en) | NON-HAZARDOUS PEST CONTROL | |
Hebeish et al. | Preparation of durable insect repellent cotton fabric: Limonene as insecticide | |
EP3217791B1 (en) | Particles for the release of active ingredients | |
JP5022034B2 (en) | Synergistic insecticidal composition formulation as a cyclodextrin complex | |
EP1909568B1 (en) | Mixture of substances for treating invertebrate and vertebrate parasites that attack animals | |
WO2007014575A1 (en) | Composition having bactericidal, fungicidal, virucidal and insecticidal action | |
WO2017097282A1 (en) | Liquid-core capsules for pest control | |
DE60200526T2 (en) | Mites deterrent and / or killing agent | |
DE69717927T2 (en) | Insecticidal composition | |
CA2495826C (en) | Ant spray containing d-limonene and methods of making and using same | |
DE69122964T2 (en) | PESTICIDE PRODUCTS | |
DE69824813T2 (en) | D-LIMONED ANTI-SPRAY AND METHOD FOR THE PRODUCTION AND USE THEREOF | |
DE10037670A1 (en) | Plant protectant composition containing synergistic combination of quassinoid and neem tree components, showing insecticidal, acaricidal, fungicidal and bactericidal activity | |
EP3462877B1 (en) | Formulations comprising volatile insecticides with improved long-term stability and activity | |
EP3364943B1 (en) | Formulations with a controlled release of perfumes for dermal application | |
WO2017045904A1 (en) | Method for controlling resistant insects using a cyclodextrin complex | |
EP4057819B1 (en) | Combination of encapsulated phenothrin and emulsified prallethrin | |
WO2023006190A1 (en) | Cyclodextrin-containing formulations for volatile substances with additives in order to maintain constant release | |
WO2022156882A1 (en) | Formulations containing cyclodextrin and fatty acids for controlling and repelling insects with improved effect | |
WO2014023718A1 (en) | Disinfectant containing a complex of iodine and cyclodextrin | |
EP1304034B1 (en) | Plant protection and strengthening agents based on onions | |
WO2022105987A1 (en) | Formulations containing cyclodextrin for improving the effectiveness of fatty acids as non-selective herbicides | |
DE19622513A1 (en) | Stable, inexpensive insecticide composition |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 16763555 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 16763555 Country of ref document: EP Kind code of ref document: A1 |