ZA200106262B - Tanning leather. - Google Patents
Tanning leather. Download PDFInfo
- Publication number
- ZA200106262B ZA200106262B ZA200106262A ZA200106262A ZA200106262B ZA 200106262 B ZA200106262 B ZA 200106262B ZA 200106262 A ZA200106262 A ZA 200106262A ZA 200106262 A ZA200106262 A ZA 200106262A ZA 200106262 B ZA200106262 B ZA 200106262B
- Authority
- ZA
- South Africa
- Prior art keywords
- thp
- tanning
- skins
- weight
- composition according
- Prior art date
Links
- 239000010985 leather Substances 0.000 title description 30
- 239000000203 mixture Substances 0.000 claims description 33
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 30
- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 22
- 239000011707 mineral Substances 0.000 claims description 22
- 235000010755 mineral Nutrition 0.000 claims description 22
- 150000003839 salts Chemical class 0.000 claims description 18
- 239000004094 surface-active agent Substances 0.000 claims description 18
- 239000003093 cationic surfactant Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 16
- 239000002736 nonionic surfactant Substances 0.000 claims description 11
- 239000011696 chromium(III) sulphate Substances 0.000 claims description 6
- 235000015217 chromium(III) sulphate Nutrition 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 150000003754 zirconium Chemical class 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 230000002195 synergetic effect Effects 0.000 claims 2
- 230000001419 dependent effect Effects 0.000 claims 1
- -1 carboxylate salt Chemical class 0.000 description 37
- 125000000217 alkyl group Chemical group 0.000 description 24
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 18
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 16
- 125000004432 carbon atom Chemical group C* 0.000 description 15
- 229910021653 sulphate ion Inorganic materials 0.000 description 15
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 13
- 239000003925 fat Substances 0.000 description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 12
- 102000008186 Collagen Human genes 0.000 description 9
- 108010035532 Collagen Proteins 0.000 description 9
- 229920001436 collagen Polymers 0.000 description 9
- 239000003921 oil Substances 0.000 description 9
- 235000019198 oils Nutrition 0.000 description 9
- 229920001577 copolymer Polymers 0.000 description 8
- 239000000344 soap Substances 0.000 description 8
- 150000001412 amines Chemical class 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000004202 carbamide Substances 0.000 description 7
- ZRALSGWEFCBTJO-UHFFFAOYSA-N Guanidine Chemical compound NC(N)=N ZRALSGWEFCBTJO-UHFFFAOYSA-N 0.000 description 6
- 125000001931 aliphatic group Chemical group 0.000 description 6
- 125000003342 alkenyl group Chemical group 0.000 description 6
- MRVZORUPSXTRHD-UHFFFAOYSA-N bis(hydroxymethyl)phosphorylmethanol Chemical compound OCP(=O)(CO)CO MRVZORUPSXTRHD-UHFFFAOYSA-N 0.000 description 6
- 239000007800 oxidant agent Substances 0.000 description 6
- 235000013311 vegetables Nutrition 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 229920000877 Melamine resin Polymers 0.000 description 5
- 150000003973 alkyl amines Chemical class 0.000 description 5
- 125000002877 alkyl aryl group Chemical group 0.000 description 5
- 239000002280 amphoteric surfactant Substances 0.000 description 5
- 239000003945 anionic surfactant Substances 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 5
- 238000005238 degreasing Methods 0.000 description 5
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 5
- 125000004437 phosphorous atom Chemical group 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 150000001450 anions Chemical class 0.000 description 4
- 125000002091 cationic group Chemical group 0.000 description 4
- 238000004132 cross linking Methods 0.000 description 4
- KWIUHFFTVRNATP-UHFFFAOYSA-N glycine betaine Chemical compound C[N+](C)(C)CC([O-])=O KWIUHFFTVRNATP-UHFFFAOYSA-N 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- UMGDCJDMYOKAJW-UHFFFAOYSA-N thiourea Chemical compound NC(N)=S UMGDCJDMYOKAJW-UHFFFAOYSA-N 0.000 description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- 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 3
- CHJJGSNFBQVOTG-UHFFFAOYSA-N N-methyl-guanidine Natural products CNC(N)=N CHJJGSNFBQVOTG-UHFFFAOYSA-N 0.000 description 3
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical class [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 125000000129 anionic group Chemical group 0.000 description 3
- 125000003118 aryl group Chemical group 0.000 description 3
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 3
- 125000000753 cycloalkyl group Chemical group 0.000 description 3
- QGBSISYHAICWAH-UHFFFAOYSA-N dicyandiamide Chemical compound NC(N)=NC#N QGBSISYHAICWAH-UHFFFAOYSA-N 0.000 description 3
- SWSQBOPZIKWTGO-UHFFFAOYSA-N dimethylaminoamidine Natural products CN(C)C(N)=N SWSQBOPZIKWTGO-UHFFFAOYSA-N 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 125000002768 hydroxyalkyl group Chemical group 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 3
- 239000000178 monomer Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 238000005554 pickling Methods 0.000 description 3
- 229920001451 polypropylene glycol Polymers 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 229920005989 resin Polymers 0.000 description 3
- 239000011347 resin Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 125000001174 sulfone group Chemical group 0.000 description 3
- 239000003760 tallow Substances 0.000 description 3
- 229910052726 zirconium Chemical class 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 2
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 2
- UIERETOOQGIECD-UHFFFAOYSA-N Angelic acid Natural products CC=C(C)C(O)=O UIERETOOQGIECD-UHFFFAOYSA-N 0.000 description 2
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 2
- 239000004971 Cross linker Substances 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical class [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 241000270322 Lepidosauria Species 0.000 description 2
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical compound [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- 241001494479 Pecora Species 0.000 description 2
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- 125000002252 acyl group Chemical group 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 125000005210 alkyl ammonium group Chemical group 0.000 description 2
- 150000004996 alkyl benzenes Chemical class 0.000 description 2
- 229940037003 alum Drugs 0.000 description 2
- 239000004411 aluminium Chemical class 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical class [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 150000001408 amides Chemical class 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 229960003237 betaine Drugs 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000001735 carboxylic acids Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- GRWVQDDAKZFPFI-UHFFFAOYSA-H chromium(III) sulfate Chemical compound [Cr+3].[Cr+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRWVQDDAKZFPFI-UHFFFAOYSA-H 0.000 description 2
- 235000014113 dietary fatty acids Nutrition 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229930195729 fatty acid Natural products 0.000 description 2
- 239000000194 fatty acid Substances 0.000 description 2
- 125000005456 glyceride group Chemical group 0.000 description 2
- 125000003976 glyceryl group Chemical group [H]C([*])([H])C(O[H])([H])C(O[H])([H])[H] 0.000 description 2
- 230000002209 hydrophobic effect Effects 0.000 description 2
- 125000001165 hydrophobic group Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 125000004029 hydroxymethyl group Chemical group [H]OC([H])([H])* 0.000 description 2
- 150000002462 imidazolines Chemical class 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000006353 oxyethylene group Chemical group 0.000 description 2
- 150000002989 phenols Chemical class 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 241000894007 species Species 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 125000001424 substituent group Chemical group 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- LDHQCZJRKDOVOX-UHFFFAOYSA-N trans-crotonic acid Natural products CC=CC(O)=O LDHQCZJRKDOVOX-UHFFFAOYSA-N 0.000 description 2
- 239000002888 zwitterionic surfactant Substances 0.000 description 2
- JNYAEWCLZODPBN-JGWLITMVSA-N (2r,3r,4s)-2-[(1r)-1,2-dihydroxyethyl]oxolane-3,4-diol Polymers OC[C@@H](O)[C@H]1OC[C@H](O)[C@H]1O JNYAEWCLZODPBN-JGWLITMVSA-N 0.000 description 1
- 239000001124 (E)-prop-1-ene-1,2,3-tricarboxylic acid Substances 0.000 description 1
- WBYWAXJHAXSJNI-VOTSOKGWSA-M .beta-Phenylacrylic acid Natural products [O-]C(=O)\C=C\C1=CC=CC=C1 WBYWAXJHAXSJNI-VOTSOKGWSA-M 0.000 description 1
- QLAJNZSPVITUCQ-UHFFFAOYSA-N 1,3,2-dioxathietane 2,2-dioxide Chemical compound O=S1(=O)OCO1 QLAJNZSPVITUCQ-UHFFFAOYSA-N 0.000 description 1
- QSUHIERZZQYNPA-UHFFFAOYSA-N 1-dodecyl-2,3-dimethylbenzene;sodium Chemical compound [Na].CCCCCCCCCCCCC1=CC=CC(C)=C1C QSUHIERZZQYNPA-UHFFFAOYSA-N 0.000 description 1
- JNYAEWCLZODPBN-UHFFFAOYSA-N 2-(1,2-dihydroxyethyl)oxolane-3,4-diol Polymers OCC(O)C1OCC(O)C1O JNYAEWCLZODPBN-UHFFFAOYSA-N 0.000 description 1
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 1
- BWHPPZHYZTZUIL-UHFFFAOYSA-N 2-(4,5-dihydroimidazol-1-yl)acetic acid Chemical compound OC(=O)CN1CCN=C1 BWHPPZHYZTZUIL-UHFFFAOYSA-N 0.000 description 1
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- UIERETOOQGIECD-ARJAWSKDSA-M 2-Methyl-2-butenoic acid Natural products C\C=C(\C)C([O-])=O UIERETOOQGIECD-ARJAWSKDSA-M 0.000 description 1
- LBLYYCQCTBFVLH-UHFFFAOYSA-N 2-Methylbenzenesulfonic acid Chemical compound CC1=CC=CC=C1S(O)(=O)=O LBLYYCQCTBFVLH-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- IULJSGIJJZZUMF-UHFFFAOYSA-N 2-hydroxybenzenesulfonic acid Chemical compound OC1=CC=CC=C1S(O)(=O)=O IULJSGIJJZZUMF-UHFFFAOYSA-N 0.000 description 1
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 1
- FLHWLBNLXDWNJC-UHFFFAOYSA-N 4,5-dihydroimidazole-1-sulfonic acid Chemical class OS(=O)(=O)N1CCN=C1 FLHWLBNLXDWNJC-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 241000251468 Actinopterygii Species 0.000 description 1
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 1
- 241000271566 Aves Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- 241000282817 Bovidae Species 0.000 description 1
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000282832 Camelidae Species 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 241000912781 Carcharhinus galapagensis Species 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- WBYWAXJHAXSJNI-SREVYHEPSA-N Cinnamic acid Chemical compound OC(=O)\C=C/C1=CC=CC=C1 WBYWAXJHAXSJNI-SREVYHEPSA-N 0.000 description 1
- 241000270722 Crocodylidae Species 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- RPNUMPOLZDHAAY-UHFFFAOYSA-N Diethylenetriamine Chemical compound NCCNCCN RPNUMPOLZDHAAY-UHFFFAOYSA-N 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Polymers S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-M Formate Chemical compound [O-]C=O BDAGIHXWWSANSR-UHFFFAOYSA-M 0.000 description 1
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 1
- 240000004752 Laburnum anagyroides Species 0.000 description 1
- JVTAAEKCZFNVCJ-UHFFFAOYSA-M Lactate Chemical compound CC(O)C([O-])=O JVTAAEKCZFNVCJ-UHFFFAOYSA-M 0.000 description 1
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241000124008 Mammalia Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- 241001508687 Mustela erminea Species 0.000 description 1
- QZXSMBBFBXPQHI-UHFFFAOYSA-N N-(dodecanoyl)ethanolamine Chemical compound CCCCCCCCCCCC(=O)NCCO QZXSMBBFBXPQHI-UHFFFAOYSA-N 0.000 description 1
- RONMCPWSECSNGE-UHFFFAOYSA-N N.CCCCCCCCCCCCOS(=O)(=O)OOCC Chemical compound N.CCCCCCCCCCCCOS(=O)(=O)OOCC RONMCPWSECSNGE-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- 241000772415 Neovison vison Species 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 229940123973 Oxygen scavenger Drugs 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 241000283216 Phocidae Species 0.000 description 1
- 241000270285 Pituophis Species 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical group CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical class C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 1
- 241000220286 Sedum Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 239000004141 Sodium laurylsulphate Substances 0.000 description 1
- 241000272534 Struthio camelus Species 0.000 description 1
- 241000282887 Suidae Species 0.000 description 1
- ULUAUXLGCMPNKK-UHFFFAOYSA-N Sulfobutanedioic acid Chemical class OC(=O)CC(C(O)=O)S(O)(=O)=O ULUAUXLGCMPNKK-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical class OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 1
- 229920001807 Urea-formaldehyde Polymers 0.000 description 1
- 241000251539 Vertebrata <Metazoa> Species 0.000 description 1
- 239000000980 acid dye Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 229940091181 aconitic acid Drugs 0.000 description 1
- 150000001298 alcohols Polymers 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000003282 alkyl amino group Chemical group 0.000 description 1
- 125000006177 alkyl benzyl group Chemical group 0.000 description 1
- 125000005600 alkyl phosphonate group Chemical group 0.000 description 1
- 125000002947 alkylene group Chemical group 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- UIERETOOQGIECD-ARJAWSKDSA-N angelic acid Chemical compound C\C=C(\C)C(O)=O UIERETOOQGIECD-ARJAWSKDSA-N 0.000 description 1
- 125000002490 anilino group Chemical group [H]N(*)C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 239000010775 animal oil Substances 0.000 description 1
- 229940027983 antiseptic and disinfectant quaternary ammonium compound Drugs 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 125000004429 atom Chemical group 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 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 description 1
- JPNZKPRONVOMLL-UHFFFAOYSA-N azane;octadecanoic acid Chemical class [NH4+].CCCCCCCCCCCCCCCCCC([O-])=O JPNZKPRONVOMLL-UHFFFAOYSA-N 0.000 description 1
- 230000008953 bacterial degradation Effects 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000000981 basic dye Substances 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- SRSXLGNVWSONIS-UHFFFAOYSA-N benzenesulfonic acid Chemical compound OS(=O)(=O)C1=CC=CC=C1 SRSXLGNVWSONIS-UHFFFAOYSA-N 0.000 description 1
- CYDRXTMLKJDRQH-UHFFFAOYSA-N benzododecinium Chemical class CCCCCCCCCCCC[N+](C)(C)CC1=CC=CC=C1 CYDRXTMLKJDRQH-UHFFFAOYSA-N 0.000 description 1
- 239000003139 biocide Substances 0.000 description 1
- JMXMXKRNIYCNRV-UHFFFAOYSA-N bis(hydroxymethyl)phosphanylmethanol Chemical compound OCP(CO)CO JMXMXKRNIYCNRV-UHFFFAOYSA-N 0.000 description 1
- 229920001400 block copolymer Polymers 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 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
- 239000003054 catalyst Substances 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 229930016911 cinnamic acid Natural products 0.000 description 1
- 235000013985 cinnamic acid Nutrition 0.000 description 1
- GTZCVFVGUGFEME-IWQZZHSRSA-N cis-aconitic acid Chemical compound OC(=O)C\C(C(O)=O)=C\C(O)=O GTZCVFVGUGFEME-IWQZZHSRSA-N 0.000 description 1
- HNEGQIOMVPPMNR-IHWYPQMZSA-N citraconic acid Chemical compound OC(=O)C(/C)=C\C(O)=O HNEGQIOMVPPMNR-IHWYPQMZSA-N 0.000 description 1
- 229940018557 citraconic acid Drugs 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000007859 condensation product Substances 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 229930003836 cresol Natural products 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- LDHQCZJRKDOVOX-NSCUHMNNSA-N crotonic acid Chemical compound C\C=C\C(O)=O LDHQCZJRKDOVOX-NSCUHMNNSA-N 0.000 description 1
- 125000000392 cycloalkenyl group Chemical group 0.000 description 1
- 125000005356 cycloalkylalkenyl group Chemical group 0.000 description 1
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 1
- 239000000982 direct dye Substances 0.000 description 1
- RZMWTGFSAMRLQH-UHFFFAOYSA-L disodium;2,2-dihexyl-3-sulfobutanedioate Chemical compound [Na+].[Na+].CCCCCCC(C([O-])=O)(C(C([O-])=O)S(O)(=O)=O)CCCCCC RZMWTGFSAMRLQH-UHFFFAOYSA-L 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- VICYBMUVWHJEFT-UHFFFAOYSA-N dodecyltrimethylammonium ion Chemical class CCCCCCCCCCCC[N+](C)(C)C VICYBMUVWHJEFT-UHFFFAOYSA-N 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 150000002194 fatty esters Chemical class 0.000 description 1
- 229940013317 fish oils Drugs 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000008394 flocculating agent Substances 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- IVJISJACKSSFGE-UHFFFAOYSA-N formaldehyde;1,3,5-triazine-2,4,6-triamine Chemical compound O=C.NC1=NC(N)=NC(N)=N1 IVJISJACKSSFGE-UHFFFAOYSA-N 0.000 description 1
- HILXIZVUTMSJCK-UHFFFAOYSA-N formic acid;2-hydroxypropanoic acid Chemical compound OC=O.CC(O)C(O)=O HILXIZVUTMSJCK-UHFFFAOYSA-N 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 125000005908 glyceryl ester group Polymers 0.000 description 1
- 150000002334 glycols Chemical class 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 231100000206 health hazard Toxicity 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 125000000623 heterocyclic group Chemical group 0.000 description 1
- 229920001519 homopolymer Polymers 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- MTNDZQHUAFNZQY-UHFFFAOYSA-N imidazoline Chemical compound C1CN=CN1 MTNDZQHUAFNZQY-UHFFFAOYSA-N 0.000 description 1
- 125000002636 imidazolinyl group Chemical group 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- SUMDYPCJJOFFON-UHFFFAOYSA-N isethionic acid Chemical class OCCS(O)(=O)=O SUMDYPCJJOFFON-UHFFFAOYSA-N 0.000 description 1
- LDHQCZJRKDOVOX-IHWYPQMZSA-N isocrotonic acid Chemical compound C\C=C/C(O)=O LDHQCZJRKDOVOX-IHWYPQMZSA-N 0.000 description 1
- AWJUIBRHMBBTKR-UHFFFAOYSA-N isoquinoline Chemical class C1=NC=CC2=CC=CC=C21 AWJUIBRHMBBTKR-UHFFFAOYSA-N 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 229910052943 magnesium sulfate Inorganic materials 0.000 description 1
- 235000019341 magnesium sulphate Nutrition 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- HNEGQIOMVPPMNR-NSCUHMNNSA-N mesaconic acid Chemical compound OC(=O)C(/C)=C/C(O)=O HNEGQIOMVPPMNR-NSCUHMNNSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- WBYWAXJHAXSJNI-UHFFFAOYSA-N methyl p-hydroxycinnamate Natural products OC(=O)C=CC1=CC=CC=C1 WBYWAXJHAXSJNI-UHFFFAOYSA-N 0.000 description 1
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 1
- HNEGQIOMVPPMNR-UHFFFAOYSA-N methylfumaric acid Natural products OC(=O)C(C)=CC(O)=O HNEGQIOMVPPMNR-UHFFFAOYSA-N 0.000 description 1
- 239000002480 mineral oil Substances 0.000 description 1
- 235000010446 mineral oil Nutrition 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-N naphthalene-1-sulfonic acid Chemical compound C1=CC=C2C(S(=O)(=O)O)=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-N 0.000 description 1
- 125000001624 naphthyl group Chemical group 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002897 organic nitrogen compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000005702 oxyalkylene group Chemical group 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 150000002942 palmitic acid derivatives Chemical class 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 description 1
- RDBMUARQWLPMNW-UHFFFAOYSA-N phosphanylmethanol Chemical compound OCP RDBMUARQWLPMNW-UHFFFAOYSA-N 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
- 150000003014 phosphoric acid esters Chemical class 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- ODGAOXROABLFNM-UHFFFAOYSA-N polynoxylin Chemical compound O=C.NC(N)=O ODGAOXROABLFNM-UHFFFAOYSA-N 0.000 description 1
- BWILYWWHXDGKQA-UHFFFAOYSA-M potassium propanoate Chemical compound [K+].CCC([O-])=O BWILYWWHXDGKQA-UHFFFAOYSA-M 0.000 description 1
- 239000004331 potassium propionate Substances 0.000 description 1
- 235000010332 potassium propionate Nutrition 0.000 description 1
- SVMNBAVEQLDZNO-UHFFFAOYSA-M potassium;2-hexadecylbenzenesulfonate Chemical compound [K+].CCCCCCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O SVMNBAVEQLDZNO-UHFFFAOYSA-M 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 235000018102 proteins Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 150000003856 quaternary ammonium compounds Chemical class 0.000 description 1
- 125000001453 quaternary ammonium group Chemical group 0.000 description 1
- 229920005604 random copolymer Polymers 0.000 description 1
- 239000002455 scale inhibitor Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 1
- 235000019254 sodium formate Nutrition 0.000 description 1
- 235000019333 sodium laurylsulphate Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- JNYAEWCLZODPBN-CTQIIAAMSA-N sorbitan Polymers OCC(O)C1OCC(O)[C@@H]1O JNYAEWCLZODPBN-CTQIIAAMSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 150000003456 sulfonamides 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 group OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 235000011149 sulphuric acid Nutrition 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 229940095064 tartrate Drugs 0.000 description 1
- 150000005621 tetraalkylammonium salts Chemical class 0.000 description 1
- FAUOSXUSCVJWAY-UHFFFAOYSA-N tetrakis(hydroxymethyl)phosphanium Chemical class OC[P+](CO)(CO)CO FAUOSXUSCVJWAY-UHFFFAOYSA-N 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- UIERETOOQGIECD-ONEGZZNKSA-N tiglic acid Chemical compound C\C=C(/C)C(O)=O UIERETOOQGIECD-ONEGZZNKSA-N 0.000 description 1
- UAXOELSVPTZZQG-UHFFFAOYSA-N tiglic acid Natural products CC(C)=C(C)C(O)=O UAXOELSVPTZZQG-UHFFFAOYSA-N 0.000 description 1
- 150000003608 titanium Chemical class 0.000 description 1
- GTZCVFVGUGFEME-UHFFFAOYSA-N trans-aconitic acid Natural products OC(=O)CC(C(O)=O)=CC(O)=O GTZCVFVGUGFEME-UHFFFAOYSA-N 0.000 description 1
- 125000005208 trialkylammonium group Chemical group 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 125000002348 vinylic group Chemical group 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
- 210000002268 wool Anatomy 0.000 description 1
- 150000003739 xylenols Chemical class 0.000 description 1
Description
TANNING LEATHER
The present invention relates to a novel process for tanning leather. Tanning is a process for the preservation of skins, by which is meant the collagen-containing integuments of vertebrates including mammals (e.g. cows, pigs, deer, goats, sheep, seals, antelope, mink, stoats and camels), fish, (e.g. sharks), reptiles (e.g. snakes, lizards and crocodiles), and birds (e.g. ostrich). Skins comprise a layer of collagen, and tanning entails reacting the collagen with a cross linking, or tanning, agent to cross link reactive sites within the collagen molecule. The product of the cross linking is leather, which is substantially less susceptible than untanned skin to bacterial degradation.
A consequence of the cross linking is an increase in the minimum temperature at which the wet leather tends to shrink. This shrink temperature is often used as an indication of the degree of tanning.
The collagen layer of the skin is separated from fats, connective tissue and other subcutaneous protein, and optionally from the outer keratinous layer, by a combination of chemical and physical steps. The former may include liming, bating, pickling and/or degreasing.
The skin is then subjected to treatment in one or more stages with various tanning agents selected to give the desired end properties.
The main types of tannage are:- vegetable tannage, based on tannin as the active cross linking agent; mineral tannage using various polyvalent metal salts, especially salts of chromium, aluminium, iron, or zirconium; and synthetic tanning agents, referred to as “syntans". Syntans include replacement syntans which are active tanning agents capable of tanning leather when used as the sole tannage and auxiliary syntans which are added to other tannages to modify the character of the leather but which are not in themselves active tanning agents. Syntans include various polymers and copolymers, such as those obtained by condensing formaldehyde with, for example, phenols and/or aryl sulphonates,
and acrylate, methacrylate, acrylamide and/or acrylonitrile homopolymers 3 copolymers. Formaldehyde itself and dialdehydes such as glutaraldehyde are also used in tanning, usually in combination with other tannages.
For centuries the production of leather was based on the vegetable tannages. One of the first mineral tannages was alum, but currently the most widely used tanning agent is chrome, usually in the form of basic chromium sulphate; which produces a blue grey leather with high shrink temperatures. However mineral tannages in general, and chrome tannages in particular give rise to effluent problems which may require expensive treatment to avoid environmental damage. Syntans are less environmentally harmful than mineral tanning agents but are typically less cost effective. Formaldehyde and difunctional aldehydes present a health hazard and are unpleasant to handle.
Tannages are usually applied to skins at levels of from about 3% to 20% by weight based on the wet weight of the skins. In the case of chrome tans a typical level for a main tan would be 8%. Where chrome is used in combination tannage, e.g. as a retannage to complete the tanning of leather previously treated with a vegetable tannage or syntan, the concentration may be as low as 4% based on the wet weight of skins. Little or no effective tanning 1s normally expected at concentrations below 3% tannage.
Tetrakis (hydroxymethyl) phosphonium salts which will be referred to generically herein as THP salts have long been used as fire-retardants for textiles and have been applied to the keratinous (fur) side of skins for this purpose. The salts may be applied directly to the fabric or in the form of precondensates which are water soluble or sparingly water soluble condensates of THP with organic nitrogen compounds such as urea or an amine. Such condensates are referred to herein as THP condensates.
THP condensates may contain 2 or more phosphorus atoms, so long as the condensate is water soluble to a concentration of at least 0.5 g/l at 25°C. Such condensates contain a total of at least 2 hydroxymethyl groups, usually at least one per phosphorus atom, and preferably at least 2 hydroxymethyl groups per phosphorus atom. The group or groups joining the phosphorus atoms together may be of the formula -R-, -R-O-, -R-O-R-, -R-
NH-R or -R-R"-R- where R is an alkylene group of 1 to 4 carbon atoms and R" is the residue formed by removal of two hydrogen atoms, bonded to nitrogen, from a di or polyamide or an amine or di or polyamine, such as urea, a Cj alkylamine, dicyandiamide, thiourea, melamine or guanidine. Such condensates with 2 or more, e.g. 3, hydroxyalkyl groups per phosphorus atom may be made by self condensation of THP salts with a compound of general formula R"H; such as urea, or a C, y, 5 alkylamine, e.g. by heating at 40 to 120°C.
US. 2 992 879 recommended a combination of THP chloride (THPC) and a phenol such as resorcinol to form an effective tanning agent when the pH is raised. THP salts copolymerise with the phenols. US 3 104 151 describes the use of such THPC phenol copolymers as pretannages for leather in which the main tannage is vegetable or mineral.
GB 2 287 953 describes the use of THP salts as cross linkers in conjunction with melamine formaldehyde or urea formaldehyde prepolymers, in order to form a copolymeric tanning agent in situ in the tanning liquor. EP 0 559 867 describes the use of
THP sulphate (THPS) on raw or cured skin prior to tanning e.g. in acid degreasing.
EP 0 681 030 describes the use of THPS as a cross linker for casein finishes applied to leather after tanning.
THP salts are stable under acidic conditions in the absence of air or oxidising agents. At ~ pH above 3 and in the absence of oxidising agents they are gradually converted to the parent base, tris(hydroxymethyl)phosphine herein referred to as THP. Conversion is rapid and substantially complete between pH of about 4 and 6. Above pH 7, or in the presence of oxidising agents THP salts or THP are converted to tris(hydroxymethyl)phosphine oxide (THPO), conversion being rapid and substantially complete at pH above about 10, e.g. 12, or at lower pH in the presence of atmospheric oxygen.
In our copending application PCT/EP98/06837 we have described the use of THP and
THP condensates as highly effective main tanning agents. The THP may be formed in situ by first impregnating the leather with a THP salt, in the substantial absence of monomers or prepolymers which react or copolymerise with THP and raising the pH above 4 and preferably above 5. THP provides an effective tanning system, which is ecologically friendly. We believe that hydroxymethyl phosphine species, other than THP, THPO and
THP salts and condensates may be formed in the leather as intermediates during the tanning process when THP or its condensates contact collagen. Where the conteki permits, references herein to THP should be construed as including references to any such species so formed, or added to the tannage.
A benefit of THP is the tight quality of the leather. Hitherto this desirable characteristic has only been achievable in conjunction with relatively low area yield, that is to say, the total area of usable leather obtained is reduced, as a result of shrinkage. With some mineral tannages area yields are increased relative to the area of the original skin. Area yield is an important economic consideration.
Another characteristic of THP based tannages is that the maximum shrink temperatures that have been achieved, even in combination with syntans, does not match those attainable with mineral tannages. This has limited the use of THP to applications in which hydrothermal stability is not a primary concern.
A particular problem with chrome tannages is the formation of chrome soaps when they react with grease in the skin. These cause unsightly staining of the skins, which staining persists through the processing and carries through to the finished leather. This is a ’ particularly serious problem with the more greasy skins, such as sheepskin. As a consequence the skins must be thoroughly degreased before the first chrome tanning step. ’
A typical tanning sequence involves a number of distinct stages. Skins are usually limed for storage prior to tanning, giving a highly alkaline pH. After deliming, the skins are first pickled with acid to lower the pH and then degreased. Then follows the main tanning stage usually using chrome tan and optionally a retan, usually with syntans or vegetable tannages, to impart particular characteristics to the leather. Finally the oils lost from the skin during the tanning sequence are at least partially replaced (fat liquoring) and the leather may be dyed and/or finished, e.g. with a resin coating. Each of the stages of the above tanning sequence is time consuming, taking from 0.5 to 3 hours.
An object of the invention is to provide a tanning system that combines the desirable qualities of THP tanned leather with improved area yield and/or higher shrink temperatures, but preferably without the environmental problems normally associated with mineral tannages. Another object is to reduce the total time taken to complete the various steps required to convert the skins to leather.
Unexpectedly it has now been discovered that the above objects can be achieved by using
THP or its condensates in combination with mineral tannage. In particular the combination of THP or THP condensates with very small amounts of mineral tannage, especially a chrome, titanium or zirconium tannage, permits high shrink temperatures to be attained without serious effluent problems. We have further discovered, surprisingly, that combinations of THP or THP condensates and chrome tan, preferably with non-ionic amphoteric and/or cationic surfactants may be used in combined degreasing and tanning, without the formation of chrome soaps thereby eliminating at least one step in the process as a separate operation and substantially reducing tanning time. THP or its salts or condensates, and chrome show a marked synergism when used together.
The invention provides an aqueous solution comprising (A) THP or a salt or condensate thereof and (B) a mineral tanning salt. -.According to a second embodiment the invention provides a method of tanning which +» comprises applying to skins a combination of THP or a THP condensate and a mineral tannage. . The tanning agent is preferably a chromic, titanium or zirconium salt, e.g. basic chromic sulphate.
According to a third embodiment the invention comprises applying to said skins, simultaneously or consecutively in either order (A) from 0.05 to 20% based on the wet weight of skins of THP or a THP condensate and (B) from 0.1 to 3% based on the wet weight of skins of a mineral tannage, preferably a chrome , titanium or zirconium tannage.
According to a fourth embodiment our invention comprises a method for the combined degreasing and tanning of skins which comprises contacting substantially undegreased skins, optionally after acid pickling with a mixture of THP or THP condensate and basic chromium sulphate and preferably also with a surfactant, especially a non-ionic and/or cationic surfactant.
According to a fifth embodiment our invention provides a tanning composition comprising an aqueous solution of (A) THP or a THP condensate and (B) a chromium tanning salt in a relative weight proportion of A:B of from 200:1 to 1:1, preferably 100:1 to 2:1, more : preferably 50:1 to 5:1, e.g. 30:1 to 10:1.
The tannage of our invention preferably contains nonionic and/or cationic surfactants and/or syntans. According to a sixth embodiment therefore, our invention provides a mixture of (A) THP or a THP condensate, (B) basic chromium sulphate and (C) a syntan, a non-ionic surfactant and/or a cationic surfactant.
As used herein all % of mineral tannage are expressed as weight equivalent metal oxide (e.g. chromic oxide) based on total weight of wet skins where the context permits.
Normally chrome tans give problems with the formation of chrome soaps unless the skins have been thoroughly degreased prior to tanning. However when mixtures of chrome and the THP are applied, even to such heavily contaminated substrates as undegreased wool skins according to the present invention, the formation of chrome soaps does not present a problem. At the low levels of chrome addition which are preferred in this invention the effluent problems normally associated with chrome tanning are substantially reduced or avoided. We believe that the formation of chrome soaps may be at least partially prevented or the resulting soap solubilised by the THP.
For the purpose of this specification "syntan" is used to refer to synthetic organic compounds capable of reacting with collagen to form cross links or to modify the physical properties of the leather and also to auxiliary syntans which do not in themselves contribute substantially to the cross linking but which modify the physical properties of the leather. For example the term includes any water soluble polymer prepared by copolymerising formaldehyde, which is capable of increasing the shrink resistance of collagen and which comprises at least two units of the formula
OH
L. — CH; where each M is an aryl group such as a phenyl, naphthyl or aniline group substituted with one or more hydroxyl and/or sulphate, sulphone or sulphonimide groups or a urea or melamine residue. As used herein the term "syntan" also includes resin syntans which are homopolymers and copolymers of unsaturated carboxylic acids or their salts, esters, amides or nitriles, e.g. acrylic acid, methacrylic acid, acrylamide, acrylonitrile, maleic acid, fumaric acid, itaconic acid, aconitic acid, crotonic acid, isocrotonic acid, citraconic acid, mesaconic acid, angelic acid, tiglic acid and cinnamic acid. The copolymers may also comprise other vinylic comonomers such as styrene. Also included are acetone condensates with, .for example sulphones and sulphonamides. Resin syntan may modify such properties as dye levelling, filling, grain appearance, break, grain strength, buffing nap, softness and tensile or tear strength.
THP may be formed in situ from any THP salt by raising the pH. Preferably the pH is raised above 3.5, more preferably above 4, e.g. above 4.5. High pH is preferably avoided because it converts THP to THPO, which is substantially ineffective as a tanning agent.
We prefer that THP solutions for use according to our invention should have a pH less than 10, more preferably less than 9, especially less than 8, typically less than 7.5, most preferably 4.5 to 7. We prefer that the THP contains less than 15%, more preferably less than 10%, e.g. less than 9% of THPO based on the weight thereof. Generally the less
THPO present the better.
To minimise the oxidation of THP we prefer to avoid including substantial amounts of oxidising agents for THP in the THP-containing liquors before the latter have reacted with the collagen. It is preferred to include a buffer and/or a catalyst for the formation of THP.
For example a mixture of magnesium salt such as magnesium sulphate with a water soluble carboxylate salt such as sodium formate, sodium acetate, potassium propionate or other water soluble alkali metal or ammonium salt of a carboxylic acid. We do not exclude the treatment of skins with oxidising agents such as hydrogen peroxide before or after tanning,
The THP salt is preferably the sulphate (THPS), but may also be the chloride (THPC) or phosphate (THPP). Other salts which could less preferably be used include the bromide, carbonate, acetate, citrate, formate lactate or borate. In principal, any water soluble THP salt with an anion which does not interact adversely with THP or other components of the tannage, or with the leather may be used. It is preferred that anions which are oxidising agents for THP should be substantially absent.
The THP condensate may preferably be a condensate of a THP salt and urea or THP salt with an alkyl amine, e.g. a Cy.yo alkylamine. Alternatively the THP salt may be condensed with thiourea, guanidine, ammonia, dicyandiamide, melamine or with a combination of comonomers. In the preparation of condensates, the THP salt is usually THPC or THPS, although any salt of a counterion which does not react adversely with other components of : the system may be used. The THP condensate may be formed in situ by adding THP or a
THP salt and e.g. ammonia, urea, melamine, guanidine or dicyandiamide or a salt thereof, to the tannage.
The total concentration of THP salt, THP and THP condensate present in the tanning liquor is preferably from 0.1 to 35% by weight based on the total weight of the tanning liquor, more preferably 0.5 to 25%, e.g. 1 to 10%, most preferably 1.5 to 5%. The total proportion of the THP and/or condensate used is from 0.05 to 20% by weight based on the weight of wet skin, preferably 0.5 to 10%, especially 0.75 to 5%, e.g. 1 to ¥% The mineral tannage is preferably added in a proportion of 0.2 to 8% based on the wet weight : of skins, more preferably 0.3 to 7%, e.g. 0.4 to 3%.
In a preferred embodiment, we prefer that the tanned leather, optionally after one or more other tanning stages, is contacted with an acid, basic or direct dye.
When the THP or THP condensate is used in combination with a syntan, the latter is preferably a polyacrylate, polymethacrylate, or copolymer of acrylic and/or methacrylic acid with acrylonitrile and/or acrylamide. Typically the polymer has a molecular weight in the range 1,000 to 200,000, more usually 3,000 to 100,000. Alternatively the syntan may be or may comprise a copolymer of formaldehyde with a hydroxy substituted and/or sulphonated benzene, alkyl benzene, naphthalene or alkyl naphthalene such as for example, phenol, benzene sulphonic acid, cresol, toluene sulphonic acid, xylenol, naphthalene sulphonic acid, resorcinol or phenol sulphonic acid, or mixtures, thereof in the form of random or block copolymers. Particularly preferred is a poly condensation product of formaldehyde with dihydroxydiphenyl sulphone.
The syntan is preferably present at a concentration of from 0.5 to 35% by weight of the tanning liquor. e.g. 1 to 20%. more preferably 2 to 10% especially 3 to 6%. The total proportion of syntan used is preferably from 1 to 20% by weight based on the wet weight of skins, e.g. 2 to 10% especially 3 to 5%.
The mineral tannage is preferably basic chromic sulphate, but other basic chromium salts may be used as may alum or other aluminium tanning salts, zirconium salts, titanium salts and iron salts.
Surfactants for use in tannages of our invention typically contain hydrophobic groups such as alkenyl, cycloalkenyl, alkyl, cycloalkyl, aryl, alkyl/aryl or more complex aryl (as in petroleum sulphonates) moieties having from 8 to 22, preferably 10 to 20, typically 12 to 18 carbon atoms and a hydrophilic moiety. Other hydrophobic groups included in the invention are polysiloxane groups. _.-The surfactant may for example consist substantially of an at least sparingly water-soluble salt of sulphonic or mono esterified sulphuric acids, e.g. an alkylbenzene sulphonate, alkyl ~ sulphate, alkyl ether sulphate, olefin sulphonate, alkane sulphonate, alkylphenol sulphate, - alkylphenol ether sulphate, alkylethanolamide sulphate, alkylethanolamidether sulphate, or alpha sulpho fatty acid or its ester each having at least one alkyl or alkenyl group with from 8 to 22, more usually 10 to 20, aliphatic carbons atoms.
The expression "ether" hereinbefore refers to compounds containing one or more glyceryl groups and/or an oxyalkylene or polyoxyalkylene group especially a group containing from 1 to 20 oxyethylene and/or oxypropylene groups. One or more oxybutylene groups may additionally or alternatively be present. For example, the sulphonated or sulphated surfactant may be sodium dodecyl benzene sulphonate, potassium hexadecyl benzene sulphonate, sodium dodecyl dimethyl benzene sulphonate, sodium lauryl sulphate, sodium tallow sulphate, potassium oleyl sulphate, ammonium lauryl monoethoxy sulphate, or monoethanolamine cetyl 10 mole ethoxylate sulphate.
Other anionic surfactants useful according to the present invention include ak sulphosuccinates, such as sodium di-2-ethylhexylsulphosuccinate and sodium dihexylsulphosuccinate, alkyl ether sulphosuccinates, alkyl sulphosuccinamates, alkyl ether sulphosuccinamates, acyl sarcosinates, acyl taurides, isethionates, soaps such as stearates, palmitates, resinates, oleates, linoleates, and alkyl ether carboxylates. Anionic phosphate esters and alkyl phosphonates, alkyl amino and imino methylene phosphonates may also be used. In each case the anionic surfactant typically contains at least one aliphatic hydrocarbon chain having from 8 to 22, preferably 10 to 20 carbon atoms, and, in the case of ethers, one or more glyceryl and/or from 1 to 20 oxyethylene and/or oxypropylene and/or oxybutylene groups.
Preferred anionic surfactants are sodium salts. Other salts of commercial interest include those of potassium, lithium, calcium, magnesium, ammonium, monoethanolamine, diethanolamine, triethanolamine, alkyl amines containing up to seven aliphatic carbon atoms, and alkyl and/or hydroxyalkyl phosphonium.
The surfactant preferably contains or consists of nonionic surfactants. The nonionic surfactant preferably comprises a polyethoxylated alcohol, e.g. a C)o.)4 alcohol with from ’ 1 to 40, typically 2 to 20, especially 4 to 10, e.g. 5 to 8 ethoxy groups. Alternatively or additionally the non-ionic surfactant may comprise, e.g. a Cjo22 alkanolamide of a mono ’ or di- lower alkanolamine, such as coconut monoethanolamide. Other nonionic surfactants which may optionally be present, include tertiary acetylenic glycols, polyethoxylated mercaptans, polyethoxylated carboxylic acids, polyethoxylated amines, polyethoxylated alkylolamides, polyethoxylated alkylphenols, polyethoxylated glyceryl esters, polyethoxylated sorbitan esters, polyethoxylated phosphate esters, and the propoxylated or ethoxylated and propoxylated analogues of all the aforesaid ethoxylated nonionics, all having a Cg; alkyl or alkenyl group and up to 20 ethyleneoxy and/or propyleneoxy groups. Also included are polyoxypropylene/polyethylene oxide copolymers, polyoxybutylene/polyoxyethylene copolymers and polyoxybutylene/polyoxypropylene copolymers. The polyecthoxy, polyoxypropylene and polyoxybutylene compounds may be endcapped with, e.g. benzyl groups to reduce the foaming tendency.
© WO 00/46409 PCT/EP00/00841
Compositions of our invention may contain amphoteric surfactant.
The amphoteric surfactant may for example be a betaine, e.g. a betaine of the formula:-
RiN'CH,COO , wherein each R is an alkyl, cycloalkyl, alkenyl or alkaryl group and preferably at least one, and most preferably not more than one R, has an average of from 8 to 20, e.g. 10 to 18 aliphatic carbon atoms and each other R has an average of from 1 to 4 carbon atoms. Particularly preferred are the quaternary imidazoline betaines of the formula:-
CH, —— CH,
N *N — CH,COO°
Nee rd ®
R wherein R and R' are alkyl, alkenyl, cycloalkyl, alkaryl or alkanol groups having an average of from 1 to 20 aliphatic carbon atoms and R preferably has an average of from 8 to 20, e.g. 10 to 18 aliphatic carbon atoms and R' preferably has 1 to 4 carbon atoms. . Other amphoteric surfactants for use according to our invention include alkyl amine ether sulphates, sulphobetaines and other quaternary amine or quaternised imidazoline sulphonic acids and their salts, and Zwitterionic surfactants, e.g. N-alkyl taurines, carboxylated amido amines such as RCONH(CH,),N* (CH,CH,CH,),CH,CO ,, and amino acids having, in each case, hydrocarbon groups capable of conferring surfactant properties (e.g. alkyl, cycloalkyl alkenyl or alkaryl groups having from 8 to 20 aliphatic carbon atoms). Typical examples include 2-tallow alkyl, 1-tallow amido alkyl, 1-carboxymethyl imidazoline and 2-coconut alkyl N-carboxymethyl 2 (hydroxyalkyl) imidazoline. Generally speaking any water soluble amphoteric or Zwitterionic surfactant compound which comprises a hydrophobic portion including Cs.5o alkyl or alkenyl group and a hydrophilic portion containing an amine or quaternary ammonium group and a carboxylate, sulphate or sulphonic acid group may be used in our invention.
Compositions of our invention preferably include cationic surfactants, which help ) suppress the formation of chrome soaps. The cationic surfactant may for example be an alkylammonium salt having a total of at least 8, usually 10 to 30, e.g. 12 to 24 aliphatic carbon atoms, especially a tri or tetra-alkylammonium salt. Typically alkylammonium surfactants for use according to our invention have one or at most two relatively long aliphatic chains per molecule (e.g. chains having an average of 8 to 20 carbon atoms each, usually 12 to 18 carbon atoms) and two or three relatively short chain alkyl groups having 1 to 4 carbon atoms each, e.g. methyl or ethyl groups, preferably methyl groups. Typical examples include dodecyl trimethyl ammonium salts. Benzalkonium salts having one 8 to
C alkyl group two 1 to 4 carbon alkyl groups and a benzyl group are also useful.
Another class of cationic surfactant useful according to our invention comprises N-alkyl . pyridinium salts wherein the alkyl group has an average of from 8 to 22, preferably 10 to 20 carbon atoms. Other similarly alkylated heterocyclic salts, such as N-alkyl : isoquinolinium salts, may also be used. g Alkylaryl dialkylammonium salts, having an average of from 10 to 30 aliphatic carbon atoms are useful, e.g. those in which the alkylaryl group is an alkyl benzene group having an average of from 8 to 22, preferably 10 to 20 carbon atoms and the other two alkyl groups usually have from 1 to 4 carbon atoms, e.g. methyl! groups.
Other classes of cationic surfactant which are of use in our invention include alkyl imidazoline or quaternised imidazoline salts having at least one alkyl group in the molecule with an average of from 8 to 22 preferably 10 to 20 carbon atoms. Typical examples include alkyl methyl hydroxyethyl imidazolinium salts, alkyl benzyl hydroxyethyl imidazolinium salts, and 2 alkyl-1-alkylamidoethyl imidazoline salts.
Another class of cationic surfactant for use according to our invention comprises the amido amines such as those formed by reacting a fatty acid having 2 to 22 carbon atoms or an ester, glyceride or similar amide forming derivative thereof, with a di or poly amine, such as, for example, ethylene diamine or diethylene triamine, in such a proportion as to leave at least one free amine group. Quaternised amido amines may similarly be employed.
Alkyl phosphonium and hydroxyalkyl phosphonium salts having one Cg.y alkyl group and three C,.4 alkyl or hydroxyalkyl groups may also be used as cationic surfactants in our invention.
Typically the cationic surfactant may be any water soluble compound having a positively ionised group, usually comprising a nitrogen atom, and either one or two alkyl groups each having an average of from 8 to 22 carbon atoms.
The anionic portion of the cationic surfactant may be any anion which confers water solubility, such as formate, acetate, lactate, tartrate, citrate, chloride, nitrate, sulphate or an alkylsulphate ion having up to 4 carbon atoms such as methosulphate. It is preferably not a surface active anion such as a higher alkyl sulphate or organic sulphonate.
Polyfluorinated anionic, nonionic or cationic surfactant may also be useful in the compositions of our invention. Examples of such surfactants are polyfluorinated alkyl ... sulphates and polyfluorinated quaternary ammonium compounds.
Compositions of our invention may contain a semi-polar surfactant such as an amine oxide, e.g. an amine oxide containing one or two (preferably one) Cs; alkyl group, the remaining substituent or substituents being preferably lower alkyl groups, e.g. C,.4 alkyl groups or benzyl groups.
Particularly preferred for use according to our invention are surfactants which are effective as wetting agents, typically such surfactants are effective at lowering the surface tension between water and a hydrophobic solid surface. We prefer surfactants which do not stabilise foams to a substantial extent.
Mixtures of two or more of the foregoing surfactants may be used. In particular mixtures of non-ionic surfactants with cationic and/or amphoteric and/or semi polar surfactants or with anionic surfactants may be used. Typically we avoid mixtures of anionic and cationic surfactants, which are often less mutually compatible.
Preferably the total THP (including THP salts and condensates) ana we surtactant are' present in a relative weight concentration of from 1:1000 to 1000:1, more usually 1:50 to 200:1, typically 1:20 to 100:1, most preferably 1:10 to 50:1, e.g. 1:1 to 20:1 especially 2:1 to 15:1.
The tannage may additionally contain biocides, water dispersants, antifoams, solvents, scale inhibitors, corrosion inhibitors, chelating agents, fat liquors, fragrances, oxygen scavengers and/or flocculants.
Where a syntan is used, the proportion by weight of total THP, THP salt and THP condensate to syntan may typically be from 1:10 to 10:1, preferably 1:5 to 2:1, especially 1:2 to 1:1. The total proportion of tannages used is preferably from 4 to 20% active weight based on the wet weight of skins, e.g. 5 to 10%, especially 6 to 8%.
The THP is preferably applied in the substantial absence of monomers or prepolymers capable of being cross linked by THP such as phenol, urea, melamine or their precondensates with formaldehyde. For the purposes of this specification, "the substantial absence of monomers or prepolymers" means less than the minimum that would be ’ capable of reacting or copolymerising with 50% of the THP, more preferably less than the minimum that would be required to react or copolymerise with 20%, e.g. less than 5% by weight based on the THP salt, most preferably less than 2%, especially less than 1%.
The THP or THP condensate is preferably applied in conjunction with the mineral tannage as a first tanning step optionally with a syntan or a mineral tannage as a retan. Preferably the THP is applied to delimed and acidified skins prior to aqueous degreasing. E.g. the initial pH is typically below 5, e.g. below 4. However it is also possible to apply the THP to alkaline skins without prior acidification or pickling. We prefer that the pH be raised or maintained above 5 and preferably maintained above 6 for the main duration of the tanning process.
The skins are preferably agitated in the tanning liquor for a sufficient time to raise the shrink temperature above 70°C, more preferably above 75°C, most preferably above 80°C,
especially above 85°C most especially above 90°C. Alternatively a concentrated tanning solution comprising the THP or THP condensate and the mineral tannage may be applied directly to the skins as a surface layer, e.g. by padding, painting, rollering or spraying.
In order to avoid a hard texture when THP is applied directly to the skin in this way it is strongly preferred to apply the THP in conjunction with fat liquor, and/or to apply fat liquor at, or immediately after, each tanning stage. :
Fat liquor is a water based emulsion of aliphatic oils or fats, including animal, vegetable, mineral or synthetic, aliphatic oils or fats normally applied to leather after tanning in order to lubricate it and replace the natural oils which the skins lose during the tannery processes. Our invention according to a preferred embodiment provides a combined tanning and fat liquoring composition for application to leather comprising an aqueous phase containing at least 10% by weight total of the THP and chrome based on the weight of the composition, from 10 to 50% based on the weight of the composition of an aliphatic oil or fat phase and sufficient surfactant to emulsify the oil or fat phase in the aqueous . phase.
The oil phase may be a glyceride oil or fat including vegetable oils, fish oils and/or animal oils or fats, a fatty ester and/or a mineral oil. The total amount of oil may be from 2 to . 30% by weight based on the weight of skins, preferably 5 to 20%.
The invention is illustrated by the following examples in which all percentages, unless otherwise stated, are by weight based on the wet weight of skins (that is the weight of skins which have been thoroughly wetted and drained but not dried).
Example 1
The following tanning sequence was employed to tan pickled sheepskins in rotary drums.
Powmge War [10000] %0 [Sodmuonee | G00]
I = I I
I 1) I ar —
I ry rN I
Taw [we] wm
Cea | [im] — [SodumFomae | 00] | @ [Sodium Bie |_To0] | a5 | 503 [Sedum Biewbone | 100] | 45 | 560
SodumBicabome | 100] | 4 | ass
Ced&ban | [| [|e]
CE FS NN ON
HE
Preservative | Water | a —— — [rowememw | ow] [wm |] "IMMEGAN" is a Registered Trade Mark. "KCL7" refers to a Cj,.14 alkyl 7 mole ethoxylate sold by Albright & Wilson under the
Registered Trade Mark "EMPILAN" KCL7. "AD75M" refers to a solution containing 75% by weight based on the weight of the total solution of THPS sold by Albright & Wilson under the Registered Trade Mark "ALBRITE" AD75M. "TOLCIDE" is a Registered Trade Mark of Albright & Wilson.
The leather had a final shrink temperature of 80°C with an area yield of 100% based on the area of the untanned skins. Despite the good area yield the leather had a tight quality typical of THP tannages. In comparison when the process was repeated without chrome addition the final shrink temperature was 64°C. This was raised to 65°C atter a further 45 minutes rotation in the drum prior to rinsing. The area yield was only 90%.
The total tanning time was reduced to 4%: hours compared to 7 to 9 hours for a conventional chrome tanning sequence. Effluent problems were substantially reduced.
Example 2
OPERATION | pRODUCT | % [ ¢ ['cIMIN[ pH [TIME | COMMENTS ooo |s26fs0) | |] |] se [eefoss] | fT [sedwmPomname | oss[27] | JT [kas IEC EE I I : pH 3.25 set back
CEE I NN NC NC al mw [wm] [| [uw [soowmromwe [oma] |B] [uw]
Ged | [| [ww bon || | [|]
EC 0 CN I I
LZ I IF EE
EE Ln HL) 2 B— gz | om] | [wm | [
Danemwe | | | | | |]
Example 3
OPERATION | PRODUCT. | "% | g.|'C [MIN | pH | TiME | COMMENTS
IE I I
2 TE xa IEE pase [| [| lee] ow wlssl
Jom [welms| [we | Je]
I Cc EE 3
EC I EE
I) NC HI
I
TC EC HE
Tess [om | m[ [[ wes | [| | [|]
Examples 2 and 3 each provided a tight flat leather with an area yield of 100% based on the area of the untreated skins.
Example 4 24 pickled sheep skins were treated with a sequence substantially identical to that of
Example 3 including the addition of 1% chrome and 0.75% active THP according to the invention, up to the last bicarbonate addition, and then retanned with a second addition of 3% by weight of wet skins, of chrome.
For comparison a further batch of 24 skins were treated in an identical sequence but with the first chrome addition omitted.
In the sequence according to the invention no skin recorded a yield of less than 100 and the average yield was 109.24. In the comparative example only three skins recorded a yield over 100 , the majority were under 95 and the average yield was 93.15.
Claims (15)
1. A composition comprising of an aqueous solution of (A) THP or a salt or condensate thereof and (B) a mineral tanning salt.
2. A composition according to claim 1 wherein (B) is a chromic, titanium or zirconium salt.
3. A composition according to claim 2 wherein (B) is a chromium tanning sait and the weight ration of A:B is from 200:1 to 1:1.
4. A composition according to claim 3 wherein the weight ratio of A:B is from 50:1 to 5:1.
5. A composition according to any foregoing claim additionally containing (C) a syntan, non-ionic surfactant and/or cationic surfactant.
6. A composition according to claim 5 wherein the weight proportion of THP to : surfactant is from 1:50 to 200:1.
7. A composition according to either of claims 5 and 6 wherein the weight proportion of THP to syntan is from 1:10 to 10:1.
8. A composition according to any foregoing claim for use as a tanning liquor containing from 0.1 to 35% by weight of THP and/or THP condensate.
9. A method of tanning which comprises applying a composition according to any foregoing claim to skins.
\ PCT/EP00/00841
8. A composition according to any foregoing claim containing from 0.1 to 35 % by weight of THP and/or a THP condensate.
9. A method of tanning which comprises applying to skins a synergistic tanning composition according to any foregoing claim.
10. A method of tanning which comprises applying to skins a synergistic tanning composition according to any one of claims 1 to 8, wherein said composition comprises (A) from 0.05 to 20 % (based on the wet weight of the skins) of THP or a THP salt or a THP condensate and (B) from 0.1 to 3 % (expressed as weight of metal oxide based on the wet weight of skins) of a mineral tannage.
11. A method according to either of claims 9 or 10 (when dependent upon any one of claims 5 to 8) wherein said composition comprises (A) THP or a THP salt (B) basic chromium sulphate and (C) a surfactant, said composition being applied to substantially undegreased skins.
12. A method according to claim 11 wherein said surfactant (C) is a non-ionic or cationic surfactant.
13. A composition according to claim 1, substantially as herein described and illustrated.
14. A method according to claim 9 or claim 10, substantially as herein described and illustrated.
15. A new composition, or a new method of tanning, substantially as herein described. AMENDED SHEET
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GBGB9902247.7A GB9902247D0 (en) | 1999-02-03 | 1999-02-03 | Tanning leather |
Publications (1)
Publication Number | Publication Date |
---|---|
ZA200106262B true ZA200106262B (en) | 2002-10-30 |
Family
ID=10846926
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ZA200106262A ZA200106262B (en) | 1999-02-03 | 2001-07-30 | Tanning leather. |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB9902247D0 (en) |
ZA (1) | ZA200106262B (en) |
-
1999
- 1999-02-03 GB GBGB9902247.7A patent/GB9902247D0/en not_active Ceased
-
2001
- 2001-07-30 ZA ZA200106262A patent/ZA200106262B/en unknown
Also Published As
Publication number | Publication date |
---|---|
GB9902247D0 (en) | 1999-03-24 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1161566B1 (en) | Tanning leather | |
KR101849065B1 (en) | Non-metal tanning process | |
AU741674B2 (en) | Tanning leather | |
KR101849066B1 (en) | Non metal tanning | |
KR101849519B1 (en) | Non metal tanning | |
KR101789042B1 (en) | Non-metal tanning process | |
JP2886161B2 (en) | Aqueous compositions of sulfonated phenols, amines and tanning salts, their preparation and their use as tanning agents | |
GB2367301A (en) | Tanning composition | |
US5098446A (en) | Use of fluorochemicals in leather manufacture | |
EP1831405A1 (en) | Composition for the treatment of leather | |
US4875900A (en) | Method of treating leather | |
EP1192284B1 (en) | Leather tanning | |
ZA200106262B (en) | Tanning leather. | |
EP1190102A1 (en) | Leather tanning | |
GB2384006A (en) | Tanning leather | |
JPS63154800A (en) | Phosphoric partial ester composition and leather fatting method | |
WO2001009392A1 (en) | Leather tanning | |
GB2394229A (en) | Leather tanning | |
US4834896A (en) | Phosphoric acid partial ester compositions and method of fatting leather therewith | |
JPH01168979A (en) | Dyeing of leather | |
CN111763780A (en) | Leather degreasing agent and preparation method and application thereof | |
US20050210596A1 (en) | Use of polyelectrolytes in the production of leather |