GB2386614A - Bleaching composition - Google Patents
Bleaching composition Download PDFInfo
- Publication number
- GB2386614A GB2386614A GB0206695A GB0206695A GB2386614A GB 2386614 A GB2386614 A GB 2386614A GB 0206695 A GB0206695 A GB 0206695A GB 0206695 A GB0206695 A GB 0206695A GB 2386614 A GB2386614 A GB 2386614A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bleaching composition
- bleaching
- composition according
- ligand
- transition metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000004061 bleaching Methods 0.000 title claims abstract description 81
- 239000000203 mixture Substances 0.000 title claims abstract description 59
- 239000003446 ligand Substances 0.000 claims abstract description 57
- 239000003352 sequestering agent Substances 0.000 claims abstract description 23
- 229910052723 transition metal Inorganic materials 0.000 claims abstract description 23
- 150000003624 transition metals Chemical class 0.000 claims abstract description 23
- 239000007844 bleaching agent Substances 0.000 claims abstract description 22
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 17
- 125000001424 substituent group Chemical group 0.000 claims abstract description 9
- 239000012736 aqueous medium Substances 0.000 claims abstract description 8
- 125000000864 peroxy group Chemical group O(O*)* 0.000 claims abstract description 6
- 230000001965 increasing effect Effects 0.000 claims abstract description 4
- 239000002609 medium Substances 0.000 claims abstract description 4
- -1 alkylene ether Chemical compound 0.000 claims description 22
- 239000000126 substance Substances 0.000 claims description 9
- 125000000217 alkyl group Chemical group 0.000 claims description 7
- 125000002947 alkylene group Chemical group 0.000 claims description 5
- 125000006514 pyridin-2-ylmethyl group Chemical group [H]C1=C([H])C([H])=C([H])C(=N1)C([H])([H])* 0.000 claims description 4
- 125000006294 amino alkylene group Chemical group 0.000 claims description 3
- 125000004450 alkenylene group Chemical group 0.000 claims description 2
- 125000003545 alkoxy group Chemical group 0.000 claims description 2
- 150000003973 alkyl amines Chemical class 0.000 claims description 2
- 125000003710 aryl alkyl group Chemical group 0.000 claims description 2
- 125000003118 aryl group Chemical group 0.000 claims description 2
- JXLHNMVSKXFWAO-UHFFFAOYSA-N azane;7-fluoro-2,1,3-benzoxadiazole-4-sulfonic acid Chemical compound N.OS(=O)(=O)C1=CC=C(F)C2=NON=C12 JXLHNMVSKXFWAO-UHFFFAOYSA-N 0.000 claims description 2
- 125000003785 benzimidazolyl group Chemical group N1=C(NC2=C1C=CC=C2)* 0.000 claims description 2
- 150000003857 carboxamides Chemical class 0.000 claims description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- 125000001072 heteroaryl group Chemical group 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 125000002883 imidazolyl group Chemical group 0.000 claims description 2
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 claims description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 claims description 2
- 125000005702 oxyalkylene group Chemical group 0.000 claims description 2
- QIIPQYDSKRYMFG-UHFFFAOYSA-N phenyl hydrogen carbonate Chemical compound OC(=O)OC1=CC=CC=C1 QIIPQYDSKRYMFG-UHFFFAOYSA-N 0.000 claims description 2
- 125000003373 pyrazinyl group Chemical group 0.000 claims description 2
- 125000003226 pyrazolyl group Chemical group 0.000 claims description 2
- 125000004076 pyridyl group Chemical group 0.000 claims description 2
- 125000000714 pyrimidinyl group Chemical group 0.000 claims description 2
- 125000000168 pyrrolyl group Chemical group 0.000 claims description 2
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 claims description 2
- 125000000335 thiazolyl group Chemical group 0.000 claims description 2
- 125000001425 triazolyl group Chemical group 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- 125000000816 ethylene group Chemical group [H]C([H])([*:1])C([H])([H])[*:2] 0.000 claims 2
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 claims 1
- 125000003136 n-heptyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 claims 1
- 239000004744 fabric Substances 0.000 description 19
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 19
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 15
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 15
- 239000003599 detergent Substances 0.000 description 14
- 239000010457 zeolite Substances 0.000 description 14
- 229910021536 Zeolite Inorganic materials 0.000 description 13
- 239000003054 catalyst Substances 0.000 description 13
- 239000003921 oil Substances 0.000 description 13
- 235000019198 oils Nutrition 0.000 description 13
- 239000004094 surface-active agent Substances 0.000 description 13
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 12
- 229940097156 peroxyl Drugs 0.000 description 11
- 239000002253 acid Substances 0.000 description 10
- 238000001035 drying Methods 0.000 description 10
- 239000000344 soap Substances 0.000 description 9
- 235000007688 Lycopersicon esculentum Nutrition 0.000 description 8
- 240000003768 Solanum lycopersicum Species 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 102000004190 Enzymes Human genes 0.000 description 7
- 108090000790 Enzymes Proteins 0.000 description 7
- 229910052783 alkali metal Inorganic materials 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 239000011734 sodium Substances 0.000 description 7
- 229910052708 sodium Inorganic materials 0.000 description 7
- 241000894007 species Species 0.000 description 7
- 239000000758 substrate Substances 0.000 description 7
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 239000012530 fluid Substances 0.000 description 6
- 238000005192 partition Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000004753 textile Substances 0.000 description 6
- 229910001428 transition metal ion Inorganic materials 0.000 description 6
- 150000001298 alcohols Chemical class 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 229910000323 aluminium silicate Inorganic materials 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 235000014113 dietary fatty acids Nutrition 0.000 description 4
- 239000000194 fatty acid Substances 0.000 description 4
- 229930195729 fatty acid Natural products 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- UEUPDYPUTTUXLJ-UHFFFAOYSA-N 1-[[4-(1,4,8,11-tetrazacyclotetradec-1-ylmethyl)phenyl]methyl]-1,4,8,11-tetrazacyclotetradecane;octahydrochloride Chemical compound Cl.Cl.Cl.Cl.Cl.Cl.Cl.Cl.C=1C=C(CN2CCNCCCNCCNCCC2)C=CC=1CN1CCCNCCNCCCNCC1 UEUPDYPUTTUXLJ-UHFFFAOYSA-N 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 3
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- CVRXLMUYFMERMJ-UHFFFAOYSA-N N,N,N',N'-tetrakis(2-pyridylmethyl)ethylenediamine Chemical compound C=1C=CC=NC=1CN(CC=1N=CC=CC=1)CCN(CC=1N=CC=CC=1)CC1=CC=CC=N1 CVRXLMUYFMERMJ-UHFFFAOYSA-N 0.000 description 3
- TTZMPOZCBFTTPR-UHFFFAOYSA-N O=P1OCO1 Chemical compound O=P1OCO1 TTZMPOZCBFTTPR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 150000001340 alkali metals Chemical class 0.000 description 3
- 239000004411 aluminium Substances 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 239000003945 anionic surfactant Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000000872 buffer Substances 0.000 description 3
- 125000004432 carbon atom Chemical group C* 0.000 description 3
- 150000001768 cations Chemical class 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 239000003240 coconut oil Substances 0.000 description 3
- 235000019864 coconut oil Nutrition 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 150000004665 fatty acids Chemical class 0.000 description 3
- 239000013589 supplement Substances 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- VKZRWSNIWNFCIQ-UHFFFAOYSA-N 2-[2-(1,2-dicarboxyethylamino)ethylamino]butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NCCNC(C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-UHFFFAOYSA-N 0.000 description 2
- MFEIKQPHQINPRI-UHFFFAOYSA-N 3-Ethylpyridine Chemical compound CCC1=CC=CN=C1 MFEIKQPHQINPRI-UHFFFAOYSA-N 0.000 description 2
- NJMWXCOSLAUOGE-UHFFFAOYSA-N 4,11-dimethyl-1,4,8,11-tetrazabicyclo[6.6.2]hexadecane Chemical compound C1CN(C)CCCN2CCN(C)CCCN1CC2 NJMWXCOSLAUOGE-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- 238000004617 QSAR study Methods 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 2
- 239000007983 Tris buffer Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 229920006243 acrylic copolymer Polymers 0.000 description 2
- 239000000443 aerosol Substances 0.000 description 2
- 150000001412 amines Chemical class 0.000 description 2
- 125000004429 atom Chemical class 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011575 calcium Substances 0.000 description 2
- KBPLFHHGFOOTCA-UHFFFAOYSA-N caprylic alcohol Natural products CCCCCCCCO KBPLFHHGFOOTCA-UHFFFAOYSA-N 0.000 description 2
- 150000001860 citric acid derivatives Chemical class 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000005108 dry cleaning Methods 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 239000002736 nonionic surfactant Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 235000021317 phosphate Nutrition 0.000 description 2
- 229920000058 polyacrylate Polymers 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 229920005996 polystyrene-poly(ethylene-butylene)-polystyrene Polymers 0.000 description 2
- 150000003138 primary alcohols Chemical class 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000011541 reaction mixture Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000019832 sodium triphosphate Nutrition 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000003826 tablet Substances 0.000 description 2
- 239000003760 tallow Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VKZRWSNIWNFCIQ-WDSKDSINSA-N (2s)-2-[2-[[(1s)-1,2-dicarboxyethyl]amino]ethylamino]butanedioic acid Chemical compound OC(=O)C[C@@H](C(O)=O)NCCN[C@H](C(O)=O)CC(O)=O VKZRWSNIWNFCIQ-WDSKDSINSA-N 0.000 description 1
- CIOXZGOUEYHNBF-UHFFFAOYSA-N (carboxymethoxy)succinic acid Chemical class OC(=O)COC(C(O)=O)CC(O)=O CIOXZGOUEYHNBF-UHFFFAOYSA-N 0.000 description 1
- CFPOJWPDQWJEMO-UHFFFAOYSA-N 2-(1,2-dicarboxyethoxy)butanedioic acid Chemical class OC(=O)CC(C(O)=O)OC(C(O)=O)CC(O)=O CFPOJWPDQWJEMO-UHFFFAOYSA-N 0.000 description 1
- PQHYOGIRXOKOEJ-UHFFFAOYSA-N 2-(1,2-dicarboxyethylamino)butanedioic acid Chemical compound OC(=O)CC(C(O)=O)NC(C(O)=O)CC(O)=O PQHYOGIRXOKOEJ-UHFFFAOYSA-N 0.000 description 1
- NJWIMFZLESWFIM-UHFFFAOYSA-N 2-(chloromethyl)pyridine Chemical compound ClCC1=CC=CC=N1 NJWIMFZLESWFIM-UHFFFAOYSA-N 0.000 description 1
- IPFJRKCJQQMQIT-UHFFFAOYSA-N 2-[[2-(2-hydroxyethoxy)-2-oxoethyl]amino]acetic acid Chemical class OCCOC(=O)CNCC(O)=O IPFJRKCJQQMQIT-UHFFFAOYSA-N 0.000 description 1
- OXOHMAPRQAJJIR-UHFFFAOYSA-N 3-(2,3-dihydroxypropoxy)propane-1,2-diol;sulfuric acid Chemical class OS(O)(=O)=O.OCC(O)COCC(O)CO OXOHMAPRQAJJIR-UHFFFAOYSA-N 0.000 description 1
- TXEODFPNVFYFIP-UHFFFAOYSA-N 3-carboxyoxy-2-methoxy-3-oxopropanoic acid Chemical class COC(C(O)=O)C(=O)OC(O)=O TXEODFPNVFYFIP-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 235000017060 Arachis glabrata Nutrition 0.000 description 1
- 244000105624 Arachis hypogaea Species 0.000 description 1
- 235000010777 Arachis hypogaea Nutrition 0.000 description 1
- 235000018262 Arachis monticola Nutrition 0.000 description 1
- DPUOLQHDNGRHBS-UHFFFAOYSA-N Brassidinsaeure Natural products CCCCCCCCC=CCCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-UHFFFAOYSA-N 0.000 description 1
- GAWIXWVDTYZWAW-UHFFFAOYSA-N C[CH]O Chemical group C[CH]O GAWIXWVDTYZWAW-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
- 102000011632 Caseins Human genes 0.000 description 1
- 108010076119 Caseins Proteins 0.000 description 1
- 102000008186 Collagen Human genes 0.000 description 1
- 108010035532 Collagen Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OCUCCJIRFHNWBP-IYEMJOQQSA-L Copper gluconate Chemical class [Cu+2].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O.OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O OCUCCJIRFHNWBP-IYEMJOQQSA-L 0.000 description 1
- URXZXNYJPAJJOQ-UHFFFAOYSA-N Erucic acid Natural products CCCCCCC=CCCCCCCCCCCCC(O)=O URXZXNYJPAJJOQ-UHFFFAOYSA-N 0.000 description 1
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- IMROMDMJAWUWLK-UHFFFAOYSA-N Ethenol Chemical group OC=C IMROMDMJAWUWLK-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 235000010469 Glycine max Nutrition 0.000 description 1
- 102000004157 Hydrolases Human genes 0.000 description 1
- 108090000604 Hydrolases Proteins 0.000 description 1
- 102000004195 Isomerases Human genes 0.000 description 1
- 108090000769 Isomerases Proteins 0.000 description 1
- 102000011782 Keratins Human genes 0.000 description 1
- 108010076876 Keratins Proteins 0.000 description 1
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 1
- 102000003960 Ligases Human genes 0.000 description 1
- 108090000364 Ligases Proteins 0.000 description 1
- 102000004317 Lyases Human genes 0.000 description 1
- 108090000856 Lyases Proteins 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- WAEMQWOKJMHJLA-UHFFFAOYSA-N Manganese(2+) Chemical compound [Mn+2] WAEMQWOKJMHJLA-UHFFFAOYSA-N 0.000 description 1
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 102000004316 Oxidoreductases Human genes 0.000 description 1
- 108090000854 Oxidoreductases Proteins 0.000 description 1
- 235000019482 Palm oil Nutrition 0.000 description 1
- ABLZXFCXXLZCGV-UHFFFAOYSA-N Phosphorous acid Chemical class OP(O)=O ABLZXFCXXLZCGV-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 235000019485 Safflower oil Nutrition 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 235000019486 Sunflower oil Nutrition 0.000 description 1
- YSMRWXYRXBRSND-UHFFFAOYSA-N TOTP Chemical compound CC1=CC=CC=C1OP(=O)(OC=1C(=CC=CC=1)C)OC1=CC=CC=C1C YSMRWXYRXBRSND-UHFFFAOYSA-N 0.000 description 1
- JZRWCGZRTZMZEH-UHFFFAOYSA-N Thiamine Natural products CC1=C(CCO)SC=[N+]1CC1=CN=C(C)N=C1N JZRWCGZRTZMZEH-UHFFFAOYSA-N 0.000 description 1
- 102000004357 Transferases Human genes 0.000 description 1
- 108090000992 Transferases Proteins 0.000 description 1
- WDJHALXBUFZDSR-UHFFFAOYSA-N acetoacetic acid Chemical compound CC(=O)CC(O)=O WDJHALXBUFZDSR-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000001342 alkaline earth metals Chemical class 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000001350 alkyl halides Chemical class 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000010936 aqueous wash Methods 0.000 description 1
- 235000003704 aspartic acid Nutrition 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical class OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- XNOQNFJEPBFKLL-UHFFFAOYSA-N butanedioic acid;1,2-diaminopropan-2-ol Chemical compound CC(N)(O)CN.OC(=O)CCC(O)=O.OC(=O)CCC(O)=O XNOQNFJEPBFKLL-UHFFFAOYSA-N 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 235000011148 calcium chloride Nutrition 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 239000000828 canola oil Substances 0.000 description 1
- 235000019519 canola oil Nutrition 0.000 description 1
- 239000005018 casein Substances 0.000 description 1
- BECPQYXYKAMYBN-UHFFFAOYSA-N casein, tech. Chemical compound NCCCCC(C(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(CC(C)C)N=C(O)C(CCC(O)=O)N=C(O)C(CC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(C(C)O)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=N)N=C(O)C(CCC(O)=O)N=C(O)C(CCC(O)=O)N=C(O)C(COP(O)(O)=O)N=C(O)C(CCC(O)=N)N=C(O)C(N)CC1=CC=CC=C1 BECPQYXYKAMYBN-UHFFFAOYSA-N 0.000 description 1
- 235000021240 caseins Nutrition 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 230000009920 chelation Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 235000012716 cod liver oil Nutrition 0.000 description 1
- 239000003026 cod liver oil Substances 0.000 description 1
- 229920001436 collagen Polymers 0.000 description 1
- 238000004440 column chromatography Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 235000005687 corn oil Nutrition 0.000 description 1
- 239000002285 corn oil Substances 0.000 description 1
- 235000012343 cottonseed oil Nutrition 0.000 description 1
- 239000002385 cottonseed oil Substances 0.000 description 1
- XQRLCLUYWUNEEH-UHFFFAOYSA-L diphosphonate(2-) Chemical compound [O-]P(=O)OP([O-])=O XQRLCLUYWUNEEH-UHFFFAOYSA-L 0.000 description 1
- 238000002330 electrospray ionisation mass spectrometry Methods 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- DPUOLQHDNGRHBS-KTKRTIGZSA-N erucic acid Chemical compound CCCCCCCC\C=C/CCCCCCCCCCCC(O)=O DPUOLQHDNGRHBS-KTKRTIGZSA-N 0.000 description 1
- IGBSXRIJNMDLFB-UHFFFAOYSA-N ethane-1,2-diamine;pentanedioic acid Chemical compound NCCN.OC(=O)CCCC(O)=O.OC(=O)CCCC(O)=O IGBSXRIJNMDLFB-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000001165 hydrophobic group Chemical group 0.000 description 1
- NBZBKCUXIYYUSX-UHFFFAOYSA-N iminodiacetic acid Chemical class OC(=O)CNCC(O)=O NBZBKCUXIYYUSX-UHFFFAOYSA-N 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000010409 ironing Methods 0.000 description 1
- 239000000944 linseed oil Substances 0.000 description 1
- 235000021388 linseed oil Nutrition 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 235000014666 liquid concentrate Nutrition 0.000 description 1
- 239000012669 liquid formulation Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- NQMRYBIKMRVZLB-UHFFFAOYSA-N methylamine hydrochloride Chemical compound [Cl-].[NH3+]C NQMRYBIKMRVZLB-UHFFFAOYSA-N 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 239000013580 millipore water Substances 0.000 description 1
- CFNHVUGPXZUTRR-UHFFFAOYSA-N n'-propylethane-1,2-diamine Chemical compound CCCNCCN CFNHVUGPXZUTRR-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N n-Octanol Natural products CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- MGFYIUFZLHCRTH-UHFFFAOYSA-N nitrilotriacetic acid Chemical compound OC(=O)CN(CC(O)=O)CC(O)=O MGFYIUFZLHCRTH-UHFFFAOYSA-N 0.000 description 1
- 239000004006 olive oil Substances 0.000 description 1
- 235000008390 olive oil Nutrition 0.000 description 1
- 239000012044 organic layer Substances 0.000 description 1
- QVGXLLKOCUKJST-BJUDXGSMSA-N oxygen-15 atom Chemical compound [15O] QVGXLLKOCUKJST-BJUDXGSMSA-N 0.000 description 1
- 239000002540 palm oil Substances 0.000 description 1
- 235000020232 peanut Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 230000005588 protonation Effects 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- 235000005713 safflower oil Nutrition 0.000 description 1
- 239000003813 safflower oil Substances 0.000 description 1
- 238000005185 salting out Methods 0.000 description 1
- 239000008159 sesame oil Substances 0.000 description 1
- 235000011803 sesame oil Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- FQENQNTWSFEDLI-UHFFFAOYSA-J sodium diphosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])([O-])=O FQENQNTWSFEDLI-UHFFFAOYSA-J 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 229940048086 sodium pyrophosphate Drugs 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 235000012424 soybean oil Nutrition 0.000 description 1
- 239000003549 soybean oil Substances 0.000 description 1
- 150000003900 succinic acid esters Chemical class 0.000 description 1
- 125000001273 sulfonato group Chemical group [O-]S(*)(=O)=O 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 229910021653 sulphate ion Inorganic materials 0.000 description 1
- 239000002600 sunflower oil Substances 0.000 description 1
- 230000008685 targeting Effects 0.000 description 1
- QEMXHQIAXOOASZ-UHFFFAOYSA-N tetramethylammonium Chemical compound C[N+](C)(C)C QEMXHQIAXOOASZ-UHFFFAOYSA-N 0.000 description 1
- 235000019818 tetrasodium diphosphate Nutrition 0.000 description 1
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 description 1
- KYMBYSLLVAOCFI-UHFFFAOYSA-N thiamine Chemical compound CC1=C(CCO)SCN1CC1=CN=C(C)N=C1N KYMBYSLLVAOCFI-UHFFFAOYSA-N 0.000 description 1
- 235000019157 thiamine Nutrition 0.000 description 1
- 229960003495 thiamine Drugs 0.000 description 1
- 239000011721 thiamine Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-O triethanolammonium Chemical compound OCC[NH+](CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-O 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3902—Organic or inorganic per-compounds combined with specific additives
- C11D3/3905—Bleach activators or bleach catalysts
- C11D3/3932—Inorganic compounds or complexes
-
- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
- D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Detergent Compositions (AREA)
Abstract
A bleaching composition comprises a ligand, L, which forms a complex with a transition metal, the bleaching composition upon addition to an aqueous medium providing an aqueous bleaching medium substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating bleach system, said ligand having a hydrophobic substituent and present in the bleaching composition as a free ligand, said hydrophobic substituent increasing hydrophobicity of the transition metal binding moiety of the ligand, wherein the ligand has a Log P value of at least 3 and the bleaching composition comprises at least 0.005% wt/wt of a transition metal sequestrant, the sequestrant having a Log P value of below 1, preferably below 0, most preferably below -1.5. The composition provides superior bleaching for oily stains.
Description
23866 1 4
- 1 ENHANCEMENT OF BLEACHING CATALYSTS
FIELD OF INVENTION
This invention relates to the enhancement of air bleaching 5 catalysts in laundry.
BACKGROUND OF INVENTION
The use of bleaching catalysts for stain removal has been developed over recent years. The recent discovery that some 10 catalysts are capable of bleaching effectively in the absence of an added peroxyl source has recently become the focus of some interest, for example: W09965905; WO0012667; WO0012808; W00029537, and, W00060045. There are many examples of catalysts for use in bleaching with peroxyl 15 species and substantial overlap between those for bleaching without added peroxyl and with peroxyl species.
Ways of enhancing the activity or improving the stain bleaching profile of these catalysts are desired.
SUMARY OF INVENTION
We have found that a bleaching composition comprising a hydrophobic free ligand of an "air bleaching catalyst", together with a hydrophilic sequestrant provides a superior 25 bleaching composition for oily stains.
Without being bound by theory we postulate the following.
The addition of the bleaching composition of the present invention to an aqueous medium containing a substrate 30 carrying an oily stain permits targeting of the oily stain with the hydrophobic free ligand. The hydrophobic free
- 2 ligand in the oily stain forms a complex with adventitious transition metals found in the oily stain which acts together with oxygen present and/or autoxidised material to bleach the chromophore in the stain. Conversely added 5 peroxyl species likely partition into the oily stain that serve to bleach the chromophore in the stain in conjunction the formed catalyst. Complexation of the hydrophobic free ligand is reduced in the aqueous medium because of the presence of the sequestrant and adventitious transition 10 metals in the stain are substantially unaffected by the sequestrant because the sequestrant does not partition into the oily stain. The hydrophobic free ligand in the oily stain forms a complex with adventitious transition metals found in the oily stain which acts together with oxygen 15 present and/or autoxidised material to bleach the chromophore in the stain.
The present invention provides a bleaching composition comprising a ligand, L, which forms a complex with a 20 transition metal, the bleaching composition upon addition to an aqueous medium providing an aqueous bleaching medium substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating bleach system, said organic substance having a hydrophobic substituent and present in the 25 bleaching composition as a free ligand, said hydrophobic substituent increasing hydrophobicity of the transition metal binding moiety of the organic substance, wherein the organic substance has a Log P value of at least 3 and the bleaching composition comprises at least 0.005% wt/wt of a 30 transition metal sequestrant, the sequestrant having a Log P
value of below 1, preferably below 0, most preferably below -1.5. One or more substituents bound to the ligand increase the 5 ligands hydrophobicity. Nevertheless is important that the ligand has some solubility in an aqueous bleaching medium so that it may partition effectively with the oily stain. It is preferred that the ligand has LogP of less than 20.
10 In addition, for the present invention to function it is believed that the ligand becomes present on the stain and is also competent to form a transition metal complex within a timeframe that is acceptable to consumer bleaching. The aqua complexes of Manganese(II) and Iron(II) metal ions give rise 15 to fast exchange reactions that are in the order of 106 to 107 s-1, see Huheey, Inorganic Chemistry, Principles of structure and reactivity, 2nd Ed, Harper International Edition. Ligands that are kinetically fast in binding to these metals will also give rise to their corresponding 20 complexes rapidly. An example of such a class of ligands which are kinetically favourable to forming transition metal complexes are the TPEN/trispicen-ligands. TPEN/Trispicen-
ligands are generally of the following form: N R1 1 \NN N 25 Without being limited to the theory, we postulate that the transition metal ions present in the stain bind in a hydrophobic matrix to the hydrophobic ligand. It is
- 4 preferred that the ligands as used in the present invention are capable of forming a transition metal catalyst after migration to an oily stain in the wash such that an active species is formed for bleaching in the absence of an added 5 peroxyl source and/or in the presence of a peroxyl source within 12 hours. This provides for at least the provision of a post-treatment bleaching effect.
There is also an example of a class of ligands that are 10 kinetically incompetent to bind to the metal ions, namely 5,12-dimethyl-1,5,8,12tetraazabicyclo[6.6.2]hexadecane (bicyclam). As discussed in papers from D. Busch and co-
workers, this class of ligands shows a great rigidity and therefore increases the kinetic stability of the complexes 15 (see Hubin et al, Inorg. Chem., 40, 435, 2001). Also the formation of complexes is very slow, also due to strong protonation features of the ligand. Hydrophobic ligands that are most preferred are those that will migrate from an aqueous wash into the stain and form a transition metal 20 complex from adventitious transition metal complexes present in the stain.
The bleaching composition is substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating 25 bleach system that is other than an alkylkydroperoxide or an alkylhydroperoxide generating system.
The term substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating bleach system" should be 30 construed within spirit of the invention. It is preferred that the composition has as low a content of peroxyl species
present as possible. The composition of the present invention bleaches a substrate with at least 10 %, preferably at least 50 %, and optimally 90 % of any bleaching of the substrate being effected via oxygen sourced 5 from the air. It is preferred that the bleaching composition of the present invention contains less than 2% wt/wt of an peroxy-based or peroxyl-generating bleach system, more preferably less than 1 % wt/wt, and most preferably less than 0.5 % wt/wt.
The present invention extends to a method of bleaching a substrate comprising applying to the substrate, in an aqueous medium, the bleaching composition according to the present invention.
The present invention extends to a commercial package comprising the bleaching composition according to the present invention together with instructions for its use. i: 20 The bleaching composition may be contacted to the textile fabric in any suitable manner. For example, it may be applied in dry form, such as in powder form, or in a liquor that is then dried, for example as an aqueous spray-on fabric treatment fluid or a wash liquor for laundry 25 cleaning, or a non-aqueous dry cleaning fluid or spray-on aerosol fluid.
Any suitable textile that is susceptible to bleaching or one that one might wish to subject to bleaching may be used.
30 Preferably the textile is a laundry fabric or garment.
- 6 - In a preferred embodiment, the method according to the present invention is carried out on a laundry fabric using an aqueous treatment liquor. In particular, the treatment may be effected in a wash cycle for cleaning laundry. More 5 preferably, the treatment is carried out in an aqueous detergent bleach wash liquid.
In a preferred embodiment, the treated textile is dried, by allowing it to dry under ambient temperature or at elevated 10 temperatures. The elevated temperatures are commonly provided by a heated agitated environment, as for example found in a tumble dryer, which has been found to accelerate and enhance the air bleaching effect. The effect of ironing the treated textile also serves to accelerate bleaching.
The bleaching method may be carried out by simply leaving the substrate in contact with the bleaching composition for a sufficient period of time. Preferably, however, the bleaching composition is in an aqueous medium, and the 20 aqueous medium on or containing the substrate is agitated.
The bleaching composition may be contacted with the textile fabric in any conventional manner. For example it may be applied in dry form, such as in powder form, or in a liquor 25 that is then dried, for example in an aqueous spray-on fabric treatment fluid or a wash liquor for laundry cleaning, or a non-aqueous dry cleaning fluid or spray-on aerosol fluid.
30 In a particularly preferred embodiment the method according to the present invention is carried out on a laundry fabric
- 7 using aqueous treatment liquor. In particular the treatment may be effected in, or as an adjunct to, an essentially conventional wash cycle for cleaning laundry. More preferably, the treatment is carried out in an aqueous 5 detergent wash liquor. The bleaching composition can be delivered into the wash liquor from a powder, granule, pellet, tablet, block, bar or other such solid form. The solid form can comprise a carrier, which can be particulate, sheet-like or comprise a threedimensional object. The 10 carrier can be dispersible or soluble in the wash liquor or may remain substantially intact. In other embodiments, the --
bleaching composition can be delivered into the wash liquor from a paste, gel or liquid concentrate.
15 A unit dose as used herein is a particular amount of the bleaching composition used for a type of wash. The unit dose may be in the form of a defined volume of powder, granules or tablet.
20 DETAILED DESCRIPTION OF THE INVENTION
Bleach Catalyst The bleach catalyst is formed in situ and likely forms a complex with transition metal ions contained within an oily stain. The ligand for use in the present invention may be 25 formed by functionalising one of the ligands detailed below as part of the ligand synthesis or may be functionalised after synthesis of the ligand backbone. Some of the ligands detailed below in generic formulas may have the required HLB.
( - 8 The ligand moiety of the bleaching composition may be selected from a wide range of organic molecules (ligands) of the TPEN and trispicen types, which are a pentadentate or hexadentate ligand of the general Formula (I): RlRlN-W-NRlR2 (I) wherein each Rl independently represents R3-V, in which R3 10 represents optionally substituted alkylene, alkenylene, oxyalkylene, aminoalkylene or alkylene ether, and V represents an optionally substituted heteroaryl group selected from pyridinyl, pyrazinyl, pyrazolyl, pyrrolyl, imidazolyl, benzimidazolyl, pyrimidinyl, triazolyl and 15 thiazolyl; W represents an optionally substituted alkylene bridging group selected from - CH2CH2 -, - CH2CH2CH2 -, CH2CH2CH2CH2 -, - CH2 - C6H4 - CH2 -, - CH2 - C6Hlo CH2-, and -CH2CloH6-cH2-; and 20 R2 represents a group selected from R1, and alkyl, aryl and arylalkyl groups optionally substituted with a substituent selected from hydroxy, alkoxy, phenoxy, carboxylate, carboxamide, carboxylic ester, sulphonate, amine, and alkylamine.
The ligand forms a transition metal complex preferably of the general formula in the oily stain (AI): [ MaLkXn] Ym in which:
- 9 - M represents a metal selected from Mn(Il)-(III)-(IV)-
(V), Cu()-(lI)-(IIl), Fe (Il)-(IlI)-(lV)-(V), Co(I)-(ll?-
(1II), Ti(lI)-(TI)-(IV), V(TI)-(llI)-(IV)-(V), Mo(Il)-
(III)-(IV)-(V)-(VI) and W(IV)-(V)-(VI), preferably from 5 Fe(Il)-(Il)-(lV) -(V); L represents a ligand having a LogP of at least 3, preferably a ligand as defined in formula (I); X represents a coordinating species selected from any mono, bi or tri charged anions and any neutral molecules 10 able to coordinate the metal in a mono, bi or tridentate manner; Y represents any non-coordinated counter ion; a represents an integer from l to 10; k represents an integer from 1 to 10; 15 n represents zero or an integer from 1 to 10; m represents zero or an integer from 1 to 20.
Log P values Log P is the n-octanol/water partition coefficient that can 20 be used to relate chemical structure to observed chemical behavior. Log P is related to the hydrophobic character of the molecule.
The Log P values were calculated within Cerius2, using 25 QSAR+, which is a program obtained from Accelrys Inc., 9685 Scranton Road, San Diego, CA 92121. The QSAR+ descriptor ALogP and molar refractivity are calculated using the method described by Ghose Crippen (1989). In this atom-based approach, each atom of the molecule is assigned to a 30 particular class, with additive contributions to the total value of logP and molar refractivity. For more information
- 10 about this descriptor the reader is directed to Leffler and Grunwald (1963).
Below are given are Log P values for a series of ligands.
R1 \NN: IN Log P R1 = methyl 2.40 R1 = e-ethyl 2.75 R1 = pyridin-2ylmethyl 3.05 R1 = n-propyl 3.28 R1 = n-Bu 3.73 R1 = CH2C6H5 3.99
R1 = n-hexyl 4.64 R1 = n-C18H37 10.12 New IN N IN
Log P = 3.86 N by P 4 21
NN: IN Log P = 3. 32 NN: Ji IN 5 Log P = 3. 8 6 NINE J: IN Log P = 5. 2 3 10 Log P = 3. 57
N N Log P = 0.50 l INN: -N Log P = 0.42 Sequestrant The bleaching composition contains a transition metal sequestrant. These components may also have calcium and magnesium chelation capacity, but preferentially they show 10 selectivity to binding transition metal ions such as iron, manganese and copper.
Transition metal sequestrants are generally present at a level of from 0. 005 to 20%, preferably from 0.1 to 10%, 15 more preferably from 0.25% to 7.5% and most preferably from 0.5% to 5% by weight of bleaching composition.
Suitable transition metal ion sequestrants for use herein include organic phosphonates, such as the amino alkylene 20 poly (alkylene phosphonates), alkali metal ethane 1-hydroxy disphosphonates and nitrilo trimethylene phosphonates.
Preferred among the above species are diethylene thiamine penta (methylene phosphonate), ethylene diamine tri 25 (methylene phosphonate) hexamethylene diamine tetra
(methylene phosphonate) and hydroxy-ethylene 1,1 diphosphonate. Other suitable transition metal ion sequestrant for use 5 herein include nitrilotriacetic acid and polyaminocarboxylic acids such as ethylenediaminotetracetic acid, ethylenetriamine pentacetic acid, ethylenediamine disuccinic acid, ethylenediamine diglutaric acid, 2hydroxypropylenediamine disuccinic acid or any salts 10 thereof.
Especially preferred is ethylenediamine-N,N'-disuccinic acid (EDDS) or the alkali metal, alkaline earth metal, ammonium, or substituted ammonium salts thereof, or mixtures thereof.
Other suitable transition metal ion sequestrants for use herein are iminodiacetic acid derivatives such as 2-hydroxyethyl diacetic acid or glyceryl imino diabetics acid, described in EP-A-317,542 and EP-A-399,133. The 20 iminodiacetic acid-N-2-hydroxypropyl sulphonic acid and aspartic acid N-carboxymethyl N-2-hydroxypropyl-3-sulphonic acid sequestrants described in EP-A-516, 102 are also suitable herein. The p-alanine-N,N'diacetic acid, aspartic acid-N,N'-diacetic acid, aspartic acid-Nmonoacetic acid and 25 iminodisuccinic acid sequestrants described in EPA-509,382 are also suitable.
EP-A476,257 describes suitable amino based sequestrants.
EP-A-510,331 describes suitable sequestrants derived from 30 collagen, keratin or casein. EP-A-528, 859 describes a suitable alkyl iminodiacetic acid sequestrant. Dipicolinic
- 14 acid and 2-phosphonobutane-1,2,4-tricarboxylic acid are also suitable. Glycinamide-N,N'-disuccinic acid (GADS), ethylenediamine-N-N'diglutaric acid (EDDG) and 2-hydroxypropylenediamine-N-N'-disuccinic acid (HPDDS) are 5 also suitable.
Builders The bleaching composition may contain as builder a crystalline aluminosilicate, preferably an alkali metal 10 aluminosilicate, more preferably a sodium aluminosilicate (zeolite). The zeolite used as a builder may be the commercially available zeolite A (zeolite 4A) now widely used in laundry 15 detergent powders. Alternatively, the zeolite may be maximum aluminium zeolite P (zeolite MAP) as described and claimed in EP 384 070B (Unilever), and commercially available as Doucil (Trade Mark) A24 from Crosfield
Chemicals Ltd. UK.
Zeolite MAP is defined as an alkali metal aluminosilicate of zeolite P type having a silicon to aluminium ratio not exceeding 1.33, preferably within the range of from 0.90 to 1.33, preferably within the range of from 0.90 to 1.20.
Especially preferred is zeolite MAP having a silicon to aluminium ratio not exceeding 1.07, more preferably about l.Oo. The particle size of the zeolite is not critical.
zeolite A or zeolite MAP of any suitable particle size may 30 be used.
- 15 Also preferred according to the present invention are phosphate builders, especially sodium tripolyphosphate.
This may be used in combination with sodium orthophosphate, and/or sodium pyrophosphate.
Other inorganic builders that may be present additionally or alternatively include sodium carbonate, layered silicate, amorphous aluminosilicates.
10 Most preferably, the builder is selected from sodium tripolyphosphate, zeolite, sodium carbonate, and combinations thereof.
Organic builders may optionally be present. These include 15 polycarboxylate polymers such as polyacrylates and acrylic/maleic copolymers; polyaspartates; monomeric polycarboxylates such as citrates, gluconates, oxydisuccinates, glycerol mono-di- and trisuccinates, carboxymethyloxysuccinates, carboxy-methyloxymalonates, 20 dipicolinates, hydroxyethyl iminodiacetates, alkyl- and alkenylmalonates and succinates; and sulphonated fatty acid salts. Organic builders may be used in minor amounts as supplements 25 to inorganic builders such as phosphates and zeolites.
Especially preferred supplementary organic builders are citrates, suitably used in amounts of from 5 to 30 wt%, preferably from 10 to 25 wt%; and acrylic polymers, more especially acrylic/maleic copolymers, suitably used in 30 amounts of from 0.5 to 15 wt%, preferably from 1 to 10 wt%.
- 16 Builders, both inorganic and organic, are preferably present in alkali metal salt, especially sodium salt, form.
Surfactant 5 The following is intended as a general example of acceptable surfactants for use with a bleaching composition of the present invention. The surfactant may be neutral or charged A fatty acid soap used preferably contains from about 16 to 10 about 22 carbon atoms, preferably in a straight chain configuration. Preferably the number of carbon atoms in the fatty acid soap is from about 16 to about 18.
This soap, in common with other anionic detergents and other 15 anionic materials in the detergent compositions of this invention, has a cation, which renders the soap water-
soluble and/or dispersible. Suitable cations include sodium, potassium, ammonium, monethanolammonium, diethanolammonium, triethanolammonium, tetramethylammonium, etc. cations.
20 Sodium ions are preferred although in liquid formulations potassium, monoethanolammonium, diethanolammonium, and triethanolammonium cations are useful.
The soaps are made from natural oils that often contain one 25 or more unsaturated groups and consist of mixtures of components. It is clear that hydrolyeation of these natural components yield mixtures of soaps. Examples of natural oils are sunflower oil, olive oil, cottonseed oil, linseed oil, safflower oil, sesame oil, palm oil, corn oil, peanut 30 oil, soybean oil, castor oil, coconut oil, canola oil, cod liver oil and the like, that give mixtures of soaps.
However, also hydrolysis products of purified oils, as listed above, may be employed. Other examples of soaps include erucic acid.
5 As one skilled in the art will appreciate a cationic may be manufactured, for example, by adding an alkyl halide to an amine thus forming a cationic.
In principle the cationic surfactants exhibit the same 10 requirements as listed above for the soap materials, except they need to be quarternised. Without limiting the scope of the invention, suitable cationics may be formed by preparing the quaternary salts from alcohols that were obtained from the corresponding fatty acid. Examples of cationic 15 surfactants based on natural oils include oleylbis(2-
hydroxyethyl)methylammonium chloride and disallow fatty alkyldimethyl ammonium chloride.
..t, In general, the nonionic and anionic surfactants of the; 20 surfactant system may be chosen from the surfactants described "Surface Active Agents" Vol. 1, by Schwartz Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing 25 Confectioners Company or in ''Tenside-Taschenbuch", H. Stache, 2nd Edn., Carl Hauser Verlag, 1981...DTD: Suitable nonionic detergent compounds which may be used include, in particular, the reaction products of compounds 30 having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols
with alkylene oxides, especially ethylene oxide either alone or with propylene oxide. Specific nonionic detergent compounds are C6-C22 alkyl phenol-ethylene oxide condensates, generally 5 to 25 SO, i.e. 5 to 25 units of ethylene oxide 5 per molecule, and the condensation products of aliphatlc Ca C1a primary or secondary linear or branched alcohols with ethylene oxide, generally 5 to 40 SO.
Suitable anionic detergent compounds which may be used are 10 usually water-soluble alkali metal salts of organic sulphates and sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl portion of higher acyl radicals.
Examples of suitable synthetic anionic detergent compounds 15 are sodium and potassium alkyl sulphates, especially those obtained by sulphating higher Ca-C18 alcohols, produced for example from tallow or coconut oil, sodium and potassium alkyl C'-C20 benzene sulphonates, particularly sodium linear secondary alkyl C1O-Cls benzene sulphonates; and sodium alkyl 20 glyceryl ether sulphates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum. The preferred anionic detergent compounds are sodium Cll-Cls alkyl benzene sulphonates and sodium C12-cla alkyl sulphates. Also 25 applicable are surfactants such as those described in EP-A-328 177 (Unilever), which show resistance to salting-out, the alkyl polyglycoside surfactants described in EP-A-070 074, and alkyl monoglycosides.
30 Preferred surfactant systems are mixtures of anionic with nonionic detergent active materials, in particular the
- 19 groups and examples of anionic and nonionic surfactants pointed out in EP-A-346 995 (Unilever). Especially preferred is surfactant system that is a mixture of an alkali metal salt of a C16_C1B primary alcohol sulphate 5 together with a Cl2-Cl5 primary alcohol 3-7 EO ethoxylate.
The nonionic detergent is preferably present in amounts greater than 10%, e.g. 25-90% by weight of the surfactant system. Anionic surfactants can be present for example in amounts in the range from about 5% to about 40% by weight of 10 the surfactant system.
Enzymes The detergent compositions of the present invention may additionally comprise one or more enzymes, which provide 15 cleaning performance, fabric care and/or sanitation benefits. Said enzymes include oxidoreductases, transferases, hydrolases, lyases, isomerases and ligases. Suitable 20 members of these enzyme classes are described in Enzyme nomenclature 1992: recommendations of the Nomenclature Committee of the International Union of Biochemistry and Molecular Biology on the nomenclature and classification of enzymes, 1992, ISBN 0-12-227165-3, Academic Press.
The composition may contain additional enzymes as found in WO 01/00768 Al page 15, line 25 to page 19, line 29, the contents of which are herein incorporated by reference.
( - 20 Experimental Tomota stain bleaching Tomato-soya oil stained cloths were agitated for 30 minutes at 30 C in an aqueous solution containing 10 mM carbonate 5 buffer (pH 10), 0.6 g/l NaAS (linear alkylbenzene sulfonate), together with 20 AM of a ligand.
Some of the experiments were conducted in the absence of added peroxyl species and some in the presence of 10 mM hydrogen peroxide as indicated.
After the wash, the cloths were rinsed with water and subsequently dried at 30 C and the change in colour was measured immediately after drying with a Linotype-Hell scanner (ex Linotype) ("t=O") and after 24 h storing in the 15 dark ("t=1"). The change in colour (including bleaching) is expressed as the AE value vs white, so a lower value means a cleaner cloth. The measured colour difference (AK) between the washed cloth and the unwashed cloth is defined as follows: AE = [(AL)2+(Aa)2+(Ab) 2] 1/Z wherein AL is a measure for the difference in darkness between the washed and unwashed test cloth; Aa and Ab are 25 measures for the difference in redness and yellowness respectively between both cloths. With regard to this colour measurement technique, reference is made to Commission International de l'Eclairage (CIE); Recommendation on Uniform Colour Spaces, colour difference 30 equations, psychometric colour terms, supplement no 2 to CIE
- 21 Publication, no 15, Colormetry, Bureau Central de la CIE, Paris 1978.
Table 1: bleach results on tomato oil measured immediately 5 after drying (t=O) and after 24 h drying (t=1). In all cases in Table 1, no peroxyl source was added to the bleaching solution.
t=0 t=1 LogP Blank 1616 _ N-methyl-trispicen (L1) 2.40 N-ethyl-trispicen (L2) 98 2.75 N-propyl-trispicen (L3) 76 1 3.28 N-hexyl-trispicen (L4) 5 N. A. 4.64 The results in Table 1 are indicative of that the ligands shown are of such hydrophobicity to partition sufficiently into an oily stain and are kinetically disposed to form a transition metal complex in the required time in an oily 15 stain with adventitious transition metals.
Table la: bleach results on tomato oil measured immediately after drying (t-O) and after 24 h drying (t=1). In all cases in Table la, no peroxyl source was added to the 20 bleaching solution.
- 22 t=0 t=1 LogP Blank 17 17 _ MeN4py 15 15 3.57 bicyclam 17 18 0.50 The results in Table la are indicative of the possibility that the ligands shown are not kinetically disposed to form 5 a transition metal complex in the required time in an oily stain with adventitious transition metals and/or are of insufficient hydrophobicity to partition sufficiently into the oily stain.
10 Table 2: bleach results for tomato oil stains measured immediately after drying (t=O) and after 24 h after drying (t=1). In all cases in Table 2, 10 me hydrogen peroxide was present in the bleaching solution used.
t=0 t=1 LogP Blank 16 16 _ N-ethyl-trispicen (L2) 10 g 2.75 N-propyltrispicen (L3) 8 7 3.28 N-hexyl-trispicen (L4) 5 4.64 Syntheses of the ligands and catalysts L1 has been prepared according to literature procedures (Bernal, J.; et al. J. Chem. Soc., Dalton Trans. ls95, 3667 20 3675).
The ligand N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2 yl)-1aminoethane (MeN4py) was prepared as described in EP 0 909 809 A2. [Fe(MeN4py)Cl]Cl was prepared as described in WO 01/16271.
The ligand L5 = N-methyl-N,N',N'-tris(5-ethylpyridin 2ylmethyl) diaminoethane which has been made as described in WO 00/27975.
10 The ligand 5,12-dimethyl-1,5,8,12 tetraazabicyclo[6.6.2]hexadecane (Bicyclam) was prepared as described in WO 00/29537.
Reaction procedure for L2, L3, L4 15 The reaction procedure for L2, L3 and L4: To a solution of 2-chloro-methylpyridine (4 mmol) and 1 mmol N- ethyl-
ethylenediamine (for L2), N-propylethylenediamine (for L3), Nhexylethylenediamine (for L4), resp. in 4 ml water at 70 C was added slowly 0.8 ml 10 NaOH over 10 minutes. The 20 reaction mixture was stirredfor an additional 30 minutes at 70 C, after which the reaction mixture was cooled to room temperature. The mixture was extracted with chloroform (3 x 5 ml) and the organic layer were dried over sodium sulphate, filtered and evaporated under reduced pressure. The 25 material was purified by column chromatography (silica, elutent CH2C12 increased slowly to 10 methanol/CH2Cl2 up to 10% methanol/5% NH4OH/CH2C12). The products were analysed by ES-MS (positive mode). Yields are typically around 50%.
30 L2: m/z 362.5 (M+H+) L3: m/z 376.4 (M+H+)
L4: m/z 418.6 (M+H+) The following illustrates the use of a sequestrant and a free ligand.
Tomato soy oily stained cloths (containing approximately 100 ppm of Fe, as determined by XFS analysis) were treated with EDTA as follows: the cloths were stirred for 30 minutes at 30 C in a 10 mM EDTA solution in 10 mM carbonate buffer at 10 pH 10 with a cloth/liquor ratio of 1/40 (w/w) . The cloths were then rinsed 3 times with Millipore water and then treated with a 20 FH CaCl2 solution for 5 minutes at room temperature. This treatment resulted in a reduced Fe level to 4 ppm, showing that most, but not all, of the iron was 15 removed from the stained cloth.
Subsequently the stains were treated for 30 minutes at 30 C in a carbonate buffer pH 10 using 20 microM of the free ligand N-methyl-N,N', N'-tris(5-ethylpyridin 20 2ylmethyl)diaminoethane and 0.6 g/L of NaLAS. Blanks were conducted without any added ligand. Control experiments were done using 10 microM of [Fe(MeN4py)Cl]Cl.
The same series of experiments were conducted using 25 untreated tomato oily stained cloths (thus higher Fe levels present). After the wash, the cloths were rinsed with water and subsequently dried at 30 C and the change in colour was 30 measured immediately after drying with a LinotypeHell scanner (ex Linotype).
- 25 The change in colour (including bleaching) is expressed as the AE value. The measured colour difference (AK) between the washed cloth and the unwashed cloth is defined as follows: HE = [(AL)2+(Aa)2+(Ab)2]1/2 wherein AL is a measure for the difference in darkness between the washed and unwashed test cloth; Aa and Qb are 10 measures for the difference in redness and yellowness respectively between both cloths. A higher AE value suggests a better bleaching performance. With regard to this colour measurement technique, reference is made to Commission International de l'Eclairage (CIE); 15 Recommendation on Uniform Colour Spaces, colour difference equations, psychometric colour terms, supplement no 2 to CIE Publication, no 15, Colormetry, Bureau Central de la CIE, Paris 1978. The results are shown below in the table below.
20 Table 3: bleach results for tomato oil stains measured immediately after drying on EDTA-treated cloths (4 ppm Fe).
_ LogP _... Blank 2.7 FeMeN4pyCl2 7.3 L5 7.2 5.23
Table 4: bleach results for tomato oil stains measured 25 immediately after drying on non EDTA-treated cloths (80 ppm Fe).
- 26 Log P Blank 4.3 _ FeMeN4pyCl2 15.6 L5 13.0 5.23
The results in the Tables 3 and 4 above show the following: Treating the tomato oil stained cloths with EDTA leads to a 5 significant reduction of the iron levels, but not to 0.
The EDTA treated cloths are sensitive to [FeMeN4pyCl]Cl as an "air bleaching" catalyst, but to a lesser extent as the non-EDTA treated cloths. This is due to the fact that treating the cloths with EDTA leads to a significant 10 reduction of the colour intensity of the cloth and therefore a smaller bleaching window can be observed.
The cloths treated with EDTA give also a bleaching effect of the free ligand, despite the fact that most of the iron was 15 removed. The nonEDTA treated cloth is also bleached by the ligand. Surprisingly, we found that the cloths treated with EDTA were still bleached by L5. It is well known that EDTA is a 20 good Fe-binding agent, so we could expect a lowering of the bleaching activity.
The assumption is now that the EDTA (is more hydrophylic) does not bind all Fe present in the hydrophobic oil matrix.
25 Using the hydrophobic ligand, one sees still a bleaching activity.
Claims (13)
1. A bleaching composition comprising a ligand, L, which forms a complex with a transition metal, the bleaching 5 composition upon addition to an aqueous medium providing an aqueous bleaching medium substantially devoid of a peroxygen bleach or a peroxy-based or peroxyl-generating bleach system, said organic substance having a hydrophobic substituent and present in the bleaching 10 composition as a free ligand, said hydrophobic.
substituent increasing hydrophobicity of the transition metal binding moiety of the organic substance, wherein the organic substance has a Log P value of at least 3 and the bleaching composition comprises at least 0. 005% 15 wt/wt of a transition metal se'uestrant, the sequestrant having a Log P value of below 1, preferably below 0, most preferably below -1.5.
2. A bleaching composition according to claim 1, wherein 20 the bleaching composition comprises at least 0.01 % wt/wt of the sequestrant.
3. A bleaching composition according to claim 1, wherein the bleaching composition comprises at least 0.05 % 25 wt/wt of the sequestrant.
4. A bleaching composition according to claim 1, wherein the ligand has a logP of less 20.
- 28
5. A bleaching composition according any one of claims 1 to 4, wherein L represents a pentadentate or hexadentate ligand of the general Formula (I): 5 R1RlN-W-NRlR2 (I) wherein each R1 independently represents -R3-V, in which R3 represents optionally substituted alkylene, alkenylene, 10 oxyalkylene, aminoalkylene or alkylene ether, and V represents an optionally substituted heteroaryl group selected from pyridinyl, pyrazinyl, pyrazolyl, pyrrolyl, imidazolyl, benzimidazolyl, pyrimidinyl, triazolyl and thiazolyl; 15 W represents an optionally substituted alkylene bridging group selected from -CH2CH2-, -CH2CH2CH2-, CH2CH2CH2CH2, -CH2-C6H4-CH2-, -CH2-C6H1o-CH2-' and -CH2 C1oH6-cH2-; and R2 represents a group selected from R1, and alkyl, 20 aryl and arylalkyl groups optionally substituted with a substituent selected from hydroxy, alkoxy, phenoxy, carboxylate, carboxamide, carboxylic ester, sulphonate, am1ne, and alkylamine.
25
6. A bleaching composition according to claim 5, wherein W is -CH2CH2-.
7. A bleaching composition according to any one of claims 5 or 6, wherein R3 is -CH2-.
- 29
8. A bleaching composition according to any one of claims 5 to 7, wherein R1 is pyridin-2-ylmethyl which is optionally substituted by C1-C8alkyl.
S
9. A bleaching composition according to claim 8, wherein R1 is pyridin2-ylmethyl.
10. A bleaching composition according to any one of claims 5 to 9, wherein R2 is selected from the group is 10 consisting of benzyl, pyridin2-ylmethyl, and C1-C2Q alkyl.
11. A bleaching composition according to claim 10, wherein R2 is selected from the group consisting of n-C3H7, n 15 C4H9, n-CSHll, n-C6H13, n-C7H15, and n-C8H16.
12. A bleaching composition according to claim 5, wherein R2 i; is selected from the group consisting of: CH2(CH2)7Ph; CH2CH2(OCH2CH2)nOCH3; CH2CH2(OCH2CH2)nO(CH2)mCH3 where m 20 = 2, 4, 6, or 8; and, (CH2) p(0CH2CH2)nOCH3 where p = 4, 8, 12, or 16, wherein n = 5, 10, 15 or 20.
13. A bleaching composition according to claim 5, wherein the ligand is selected from the group consisting of: IN NN: NN:
ó)J IN and
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0206695A GB2386614A (en) | 2002-03-21 | 2002-03-21 | Bleaching composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB0206695A GB2386614A (en) | 2002-03-21 | 2002-03-21 | Bleaching composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB0206695D0 GB0206695D0 (en) | 2002-05-01 |
| GB2386614A true GB2386614A (en) | 2003-09-24 |
Family
ID=9933445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0206695A Withdrawn GB2386614A (en) | 2002-03-21 | 2002-03-21 | Bleaching composition |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2386614A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048787A1 (en) * | 1996-06-19 | 1997-12-24 | Unilever N.V. | Bleach activation |
| WO2000012667A1 (en) * | 1998-09-01 | 2000-03-09 | Unilever Plc | Composition and method for bleaching a substrate |
| WO2002050229A1 (en) * | 2000-12-18 | 2002-06-27 | Unilever Plc | Enhancement of air bleaching catalysts |
-
2002
- 2002-03-21 GB GB0206695A patent/GB2386614A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997048787A1 (en) * | 1996-06-19 | 1997-12-24 | Unilever N.V. | Bleach activation |
| WO2000012667A1 (en) * | 1998-09-01 | 2000-03-09 | Unilever Plc | Composition and method for bleaching a substrate |
| WO2002050229A1 (en) * | 2000-12-18 | 2002-06-27 | Unilever Plc | Enhancement of air bleaching catalysts |
Also Published As
| Publication number | Publication date |
|---|---|
| GB0206695D0 (en) | 2002-05-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR100382435B1 (en) | Fabric bleaching composition | |
| US6302921B1 (en) | Method of bleaching stained fabrics | |
| EP0630964B1 (en) | Inhibition of re-absorption of migrating dyes in the wash liquor | |
| JPH09511774A (en) | Bleaching composition containing a metal-containing bleaching catalyst and an antioxidant | |
| EP0717103B1 (en) | Inhibition of dye migration | |
| MXPA01009878A (en) | Fabric softening component. | |
| WO2001016271A1 (en) | Composition and method for bleaching a substrate | |
| MXPA01009872A (en) | Detergent compositions. | |
| WO1996014384A1 (en) | Laundry washing method using a dispensing means for a solid bleaching detergent | |
| US20020013246A1 (en) | Composition and method for bleaching laundry fabrics | |
| WO1999013040A1 (en) | Detergent compositions | |
| US20020010121A1 (en) | Bleaching and dye transfer inhibiting composition and method for laundry fabrics | |
| GB2386615A (en) | Bleaching composition | |
| CA2250226A1 (en) | Bleaching composition | |
| GB2386614A (en) | Bleaching composition | |
| WO1999013037A1 (en) | Bleaching compositions | |
| WO2001016269A1 (en) | Method of bleaching stained fabrics | |
| WO1997036989A1 (en) | Bleaching composition | |
| EP1208186B1 (en) | Composition and method for bleaching a substrate | |
| US20030036492A1 (en) | Composition and method for bleaching a substrate | |
| GB2386616A (en) | Bleaching composition | |
| WO1996014383A1 (en) | Bleaching detergents containing a bleach activator in close proximity to a layered silicate or a clay | |
| EP1481048B1 (en) | Bleaching composition | |
| WO1999064558A1 (en) | Cleaning compositions containing speckle particles | |
| EP1369472A1 (en) | Preserved enhancement of bleaching catalyst |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WAP | Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1) |