EP1530647A1 - Formulierung für den einsatz in der chromfrei- oder chromgerbung - Google Patents
Formulierung für den einsatz in der chromfrei- oder chromgerbungInfo
- Publication number
- EP1530647A1 EP1530647A1 EP03793708A EP03793708A EP1530647A1 EP 1530647 A1 EP1530647 A1 EP 1530647A1 EP 03793708 A EP03793708 A EP 03793708A EP 03793708 A EP03793708 A EP 03793708A EP 1530647 A1 EP1530647 A1 EP 1530647A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- average particle
- tannins
- particle diameter
- less
- clay mineral
- 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.)
- Granted
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 30
- 238000009472 formulation Methods 0.000 title claims abstract description 20
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 9
- 239000002734 clay mineral Substances 0.000 claims abstract description 52
- 239000002245 particle Substances 0.000 claims abstract description 42
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 36
- 239000000126 substance Substances 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 15
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000009826 distribution Methods 0.000 claims abstract description 11
- 230000002902 bimodal effect Effects 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 235000013311 vegetables Nutrition 0.000 claims abstract description 7
- 239000011347 resin Substances 0.000 claims abstract description 5
- 229920005989 resin Polymers 0.000 claims abstract description 5
- 229920000620 organic polymer Polymers 0.000 claims abstract description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims abstract description 3
- 239000000049 pigment Substances 0.000 claims abstract description 3
- 229920001864 tannin Polymers 0.000 claims description 18
- 239000001648 tannin Substances 0.000 claims description 18
- 235000018553 tannin Nutrition 0.000 claims description 18
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 11
- 150000001720 carbohydrates Chemical class 0.000 claims description 8
- 239000001913 cellulose Substances 0.000 claims description 8
- 229920002678 cellulose Polymers 0.000 claims description 8
- 229910052615 phyllosilicate Inorganic materials 0.000 claims description 8
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical group O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 claims description 7
- 238000004519 manufacturing process Methods 0.000 claims description 7
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 claims description 6
- 229910052901 montmorillonite Inorganic materials 0.000 claims description 6
- 238000000149 argon plasma sintering Methods 0.000 claims description 5
- -1 ethylhexyl Chemical group 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 239000000020 Nitrocellulose Substances 0.000 claims description 4
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 claims description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims description 4
- 150000001299 aldehydes Chemical class 0.000 claims description 4
- 239000000440 bentonite Substances 0.000 claims description 4
- 229910000278 bentonite Inorganic materials 0.000 claims description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 4
- 239000004202 carbamide Substances 0.000 claims description 4
- YGANSGVIUGARFR-UHFFFAOYSA-N dipotassium dioxosilane oxo(oxoalumanyloxy)alumane oxygen(2-) Chemical compound [O--].[K+].[K+].O=[Si]=O.O=[Al]O[Al]=O YGANSGVIUGARFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910000271 hectorite Inorganic materials 0.000 claims description 4
- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 claims description 4
- 229910052622 kaolinite Inorganic materials 0.000 claims description 4
- 229910052627 muscovite Inorganic materials 0.000 claims description 4
- 229920001220 nitrocellulos Polymers 0.000 claims description 4
- 229920005862 polyol Polymers 0.000 claims description 4
- 150000003077 polyols Chemical class 0.000 claims description 4
- 229910021647 smectite Inorganic materials 0.000 claims description 4
- 150000003672 ureas Chemical class 0.000 claims description 4
- 150000003673 urethanes Chemical class 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 150000003857 carboxamides Chemical class 0.000 claims description 3
- 239000000975 dye Substances 0.000 claims description 3
- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 claims description 3
- 150000003457 sulfones Chemical class 0.000 claims description 3
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims description 2
- 125000002777 acetyl group Chemical class [H]C([H])([H])C(*)=O 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims 1
- 239000011651 chromium Substances 0.000 claims 1
- 239000003086 colorant Substances 0.000 abstract description 2
- 239000010419 fine particle Substances 0.000 abstract 2
- 238000009792 diffusion process Methods 0.000 abstract 1
- 125000002485 formyl group Chemical class [H]C(*)=O 0.000 abstract 1
- 125000001174 sulfone group Chemical group 0.000 abstract 1
- 239000010985 leather Substances 0.000 description 22
- 230000000052 comparative effect Effects 0.000 description 16
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 10
- 230000006872 improvement Effects 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 7
- 239000005995 Aluminium silicate Substances 0.000 description 6
- 235000012211 aluminium silicate Nutrition 0.000 description 6
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 5
- 235000019253 formic acid Nutrition 0.000 description 5
- 150000004760 silicates Chemical class 0.000 description 5
- 239000007787 solid Substances 0.000 description 5
- 102000008186 Collagen Human genes 0.000 description 4
- 108010035532 Collagen Proteins 0.000 description 4
- 229920001436 collagen Polymers 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 231100000241 scar Toxicity 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000004280 Sodium formate Substances 0.000 description 3
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 3
- 235000012216 bentonite Nutrition 0.000 description 3
- 238000004049 embossing Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 238000003801 milling Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 description 3
- 235000019254 sodium formate Nutrition 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 235000011468 Albizia julibrissin Nutrition 0.000 description 2
- 241000283699 Bos indicus Species 0.000 description 2
- 241001070944 Mimosa Species 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000004040 coloring Methods 0.000 description 2
- 229920001577 copolymer Polymers 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000011265 semifinished product Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 1
- 235000017399 Caesalpinia tinctoria Nutrition 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- 241000283070 Equus zebra Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- 238000001016 Ostwald ripening Methods 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 241000388430 Tara Species 0.000 description 1
- 206010044625 Trichorrhexis Diseases 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 239000008346 aqueous phase Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008033 biological extinction Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000001049 brown dye Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000008119 colloidal silica Substances 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 229920000578 graft copolymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 239000011256 inorganic filler Substances 0.000 description 1
- 229910003475 inorganic filler Inorganic materials 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 229920000058 polyacrylate Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920000193 polymethacrylate Polymers 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000037390 scarring Effects 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/08—Chemical tanning by organic agents
- C14C3/16—Chemical tanning by organic agents using aliphatic aldehydes
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/28—Multi-step processes
Definitions
- the invention relates to a formulation for use in chrome-free or chrome tanning, comprising a clay mineral and a use of clay minerals.
- perishable animal skin substance is processed through preparatory treatment with so-called tanning aids, chemical conversion with tannins and appropriate dressing to form resistant leather that remains soft and supple and has the desired properties (cf. Römpp Chemie Lexikon, 9th edition, 1995 , Page 1538).
- the high water content that stabilizes the collagen structure of the original skin substance is reduced and irreversible stabilization is achieved by crosslinking with tannins.
- inorganic tanning agents are mainly chromium (III) salts, polyphosphates, aluminum, zirconium and iron salts.
- Organic tanning agents can be synthetic or of vegetable origin (cf. Römpp Chemie Lexikon, 9th edition, page 1541).
- inorganic polymers were generally known in the tannery as fillers. According to the view presented in H. Herfeld: part des Leders, Volume 3, Umschau Verlag, Frankfurt, 2nd edition, 1990, page 227, inorganic fillers would have no tanning effect. These include kaolin, finely divided clay ("China Clay”), colloidal silica, etc. These products are deposited in the loosely structured areas of the skin and preferably on the meat side. The scarring is very little influenced, the sandability is often improved, the plush is shorter.
- the disadvantage here was the very loose binding or the superficial incorporation into the skin substance.
- Millen a considerable proportion of the stored substances was released again and led to clogging of the scars or to an abrasive damage to the scar pattern.
- DE-C 969689 describes the use of surface-active silicon-containing fillers, in particular of silicon dioxide and / or silicates in colloidally dispersed form, with a particle size of 0.1 to 1 ⁇ , for leveling, shortening and refinement the cut of in particular suede.
- silicon-containing colloid dusts are to be strongly absorbed on the collagen fiber, so that the storage is to be largely retained even in subsequent operations.
- colloidally disperse silicon dioxide, silicates or mixtures thereof have the disadvantage of being subject to constant change as dynamic systems. As a result of this change, the size of the primarily stored particles up to sand-like agglomerates occurs during the storage or use of the leather / leather goods by Ostwald ripening. In shoe upper leather, for example, the flexing in the gussets causes abrasive damage to the leather. This so-called silicate tanning is therefore considered to be comparatively unstable.
- a formulation has been found for use in chrome-free or chrome tanning, comprising a clay mineral which, after vigorous stirring in water at 50 ° C. for 30 minutes, has a number-average particle diameter of less than 2 ⁇ m or a bimodal size distribution with a first, finely divided fraction , whose number-average particle diameter is less than 0.5 ⁇ m and a second, coarser fraction, whose number-average particle diameter is less than 5 m, in each case according to the determination method according to ISO 13320-1, by combined laser light diffraction and light scattering, the proportion of the first, finely divided Fraction is between 10 and 90 wt .-%, and has one or more substances from one or more of the groups listed below: organic polymers, aldehyde tanning agents, sulfone tanning agents, resin tanning agents, phenol tanning agents, fatliquoring agents, vegetable tanning agents, dyes and pigments.
- the particle sizes and particle size distribution were determined in accordance with ISO 13320-1 by combined laser light diffraction and light scattering using an analysis device from Malvern, type Malvern 2000.
- clay minerals with the particle sizes defined above are essential for their interaction with the collagen chains of the skin. This interaction is possible, for example, via hydrogen bonds between collagen and the surface hydroxyl groups of the clay minerals. It was surprisingly found that clay minerals with the defined particle sizes are irreversibly embedded in the skin.
- Clay minerals are weathering products made from primary aluminosilicates, i.e. from compounds with different proportions of aluminum oxide and silicon dioxide. Silicon is tetrahedrally surrounded by four oxygen atoms, while aluminum is in octahedral coordination. Clay minerals predominantly belong to the phyllosilicates also known as layered silicates or leaf silicates, but in some cases also to the band silicates (cf. Römpp Chemie Lexikon, 9th edition, 1995, pages 4651 and 4652).
- the clay mineral is a phyllosilicate.
- the phyllosilicate can preferably be a kaolinite, muscovite, montmorillonite, smectite or bentonite, in particular a hectorite.
- the substances are mixed with substances which, owing to their chemical structure, are able to form strong hydrogen bonds with the clay mineral, in particular with urea or urea derivatives, alcohols, polyols, Propylene carbonate, organic amides, urethanes, saccharides or derivatives of saccharides, especially nitrocellulose, sulfite cellulose or ethylhexyl cellulose.
- This treatment supports, among other things, the delamination of the clay mineral, especially layered silicate.
- Polymethacrylates, polyacrylates, maleic anhydride-styrene copolymers or maleic anhydride-isobutene copolymers, for example, can be used as organic polymers in the formulations according to the invention.
- Formulations are preferred in which the clay mineral has a number-average particle diameter of less than 1 ⁇ m.
- Particularly suitable is a formulation comprising a clay mineral which, after vigorous stirring in water at 50 ° C. for 30 minutes, has a number-average particle diameter of less than 2 ⁇ m or a bimodal size distribution with a first, finely divided fraction, the number-average particle diameter of which according to the determination method according to ISO 13320-1, by combined laser light diffraction and light scattering is less than 0.5 ⁇ m and a second, coarser fraction whose number-average particle diameter is less than 5 ⁇ m, the proportion of the first, finely divided fraction being between 10 and 90% by weight .- has, and the aldehyde tanning agent is glutaraldehyde or a derivative of glutaraldehyde, in particular an acetal.
- the invention also relates to the use of clay minerals which, after vigorous stirring in water at 50 ° C. for 30 minutes, have a number-average particle diameter of less than 2 ⁇ m or a bimodal size distribution with a first, finely divided fraction whose number-average particle diameter is less than 0 .5 ⁇ m and a second, coarser fraction, the number average particle diameter of which is smaller than 5 ⁇ m, the proportion of the first, finely divided fraction being between 10 and 90% by weight, as tannins or for the preparation of tannins.
- clay minerals with a number average particle diameter of less than 1 ⁇ m.
- clay minerals before or during their use as tanning agents with substances which, due to their chemical structure, are able to form strong hydrogen bonds with the clay mineral, in particular with urea or urea derivatives, alcohols, polyols, Per- pylene carbonate, organic amides, urethanes, saccharides or derivatives of saccharides, especially nitrocellulose, sulfite cellulose or ethylhexyl cellulose.
- the clay mineral used is preferably a phyllosilicate, particularly preferably a kaolinite, muscovite, montmorillonite, smectite or bentonite, in particular a hectorite.
- the clay minerals are used as tannins or for the production of tannins for pretanning, in particular for chromium-free pretanning.
- clay minerals are used as tanning agents or for the production of chrome or chrome-free tanning agents for retanning.
- a significantly improved selective filling effect is achieved, that is to say loose, loose areas are preferably filled, whereby an improvement in the leather quality and area yield is achieved.
- the scar strength is significantly improved, i.e. the formation of wrinkles or split ends on the surface is considerably reduced or avoided.
- the leather quality is also increased by the improved embossability.
- the leather quality is improved by increasing the tear resistance.
- An essential quality feature in pre-tanning, especially with chrome-free leathers, is the foldability of the semi-finished product. This is improved by the invention, with the result of an improved surface quality and thickness levelness of the folded skin as well as a reduced tool, especially knife wear during the folding process. The time saved by the improved process capability due to the reduced gluing of the folding blades is also significant.
- the fat distribution of both native and applied fat is improved, with the result of a more even, quieter surface.
- the regularity of the fat distribution also makes it possible to save up to 50% of the fat in the retanning process and thus to provide particularly environmentally compatible tanning processes with a correspondingly low wastewater load.
- a significant process advantage lies in the significant improvement in environmental compatibility by improving the liquor consumption, in particular with regard to the greasing agents, by up to 50%, with a correspondingly lower wastewater load.
- Table 1 below shows the solids content of the liquor after the tanning process, in each case based on the original total liquor.
- the foldability of the pre-tanned leather was assessed on a scale from 1 to 5.
- the shrink temperature was determined according to DIN 53336, which was modified in the following points as listed below: Point 4.1: The test pieces had the dimensions 3 cm • 1 cm, the thickness was not determined;
- Point 8 when the pointer fell, the shrinking temperature was read.
- a commercially available Zebu wet blue leather was folded to a thickness of 1.8 to 2.0 mm and quartered. The quarters were then placed in a barrel and a liquor length of 200%, i.e. a liquor of 2 kg aqueous phase on 1 kg leather at 10 min intervals with 2% sodium formate and 0.4% sodium bicarbonate and 1% Tamol® NA added. After 90 minutes, the fleet was drained and the zebra quarters were divided into four separate walk-barrels.
- Comparative Example 2.0 a 1% aqueous solution of the Luganil® brown dye was metered into one of the Walk drums at 25 ° C. and then the zebu quarter in the drum was drummed for 10 minutes.
- Relugan® RV polymer tanning agent 5% Basyntan® DLX sulfon tanning agent and 2% Relugan® DLF resin tanning agent were added and drummed again in the barrel for 20 min at 10 rpm.
- the skin was then treated with 3% commercially available Mimosa vegetable tanning agent for 40 minutes and then for a further 40 minutes with 2% Mimosa vegetable tanning agent.
- the mixture was then acidified to pH 3.6 to 3.8 with formic acid. After 20 minutes the liquor was drained and washed with 200% water. Finally, 5% Lipodermlicker® CMG and 2% Lipodermlicker® PN were dosed in 100% water at 50 ° C. After a milling time of 45 minutes, the mixture was acidified with 1% formic acid.
- the washed leather was dried and stabled and the quality was assessed in terms of fullness, grain strength, softness and levelness of the coloring / greasing according to a grading system from 1 (very good) to 5 (unsatisfactory).
- the tensile strength in Newton according to DIN 53328 and the stitch pull-out force in Newton were determined according to DIN 53331.
- the comparison of the values for the chemical oxygen demand (COD values) confirms the improved liquor consumption with the clay minerals according to the invention.
- comparative example 2.1 compared to comparative example 2.0, a clay mineral corresponding to comparative example 1.1, ie kaolin with a further particle size of 13.2 ⁇ m, in a concentration of 4%, was metered in together with the Basyntan® DLX sulfon tannin.
- Table 2 below shows a significant improvement in quality with regard to fullness, grain strength, softness, levelness of the coloring / greasing and tensile strength and stitch tear strength of the leather obtained in Examples B2.1 and B2.2 according to the invention compared to Comparative Examples V2.0 and V2.1.
- the skin of a South German cattle was transferred to a wet white semi-finished product, folded to a thickness of 1.2 mm and cut into strips of about 250 g each.
- the skin was treated with 150% water for 40 min at 35 ° C. with 3% Relugan® GT 50, that is to say a formulation which essentially comprises an aqueous glutardialdehyde solution, and 0.5% formic acid.
- the mixture was then treated with 4% of a mixture consisting of equal parts of Tamol® NA and sodium formate for 60 minutes and then drummed with 4% Relugan® SE and 5% Basyntan® SW, that is to say a sulfon tanning agent, for 20 minutes.
- 6% of the commercially available vegetable tanning agent Tara and 2% resin tanning agent Relugan® S and 2% coloring agent Luganil® Braun NGB were added and the mixture was drummed again.
- the leather pieces were embossed according to the following procedure: trimmed and pressed with a plate press at a pressure of 120 bar and a temperature of 80 to 100 ° C for 5 sec. The quality of the embossing was measured according to the criteria of embossing depth, levelness and reminiscence after tensile stress.
- comparative example V3.0 no clay mineral was added, in comparative example V3.1 the clay mineral corresponding to VI.1, ie kaolin with an average particle size of 13.2 ⁇ m, and in comparative example V3.2 the clay mineral according to comparative example V1.3, ie Kaolin with an average particle size of 5.1 ⁇ m.
- the clay mineral was added in accordance with example B1.1, ie a kaolin with an average particle size of 1.3 ⁇ m, in example 3.2 a clay mineral in accordance with example B1.2, i.e. montmorillonite with an average particle size of 0, 6 ⁇ m and in example B3.3 the clay mineral corresponding to example B1.3, ie a mixture of kaolin and montmorillonite with a bimodal average particle size distribution, one fraction having an average particle size of 0.6 ⁇ m and a second fraction having an average particle size of 3, Had 2 ⁇ m.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
- Coloring (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10237259A DE10237259A1 (de) | 2002-08-14 | 2002-08-14 | Formulierung für den Einsatz in der Chromfrei- oder Chromgerbung |
| DE10237259 | 2002-08-14 | ||
| PCT/EP2003/008830 WO2004022790A1 (de) | 2002-08-14 | 2003-08-08 | Formulierung für den einsatz in der chromfrei- oder chromgerbung |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1530647A1 true EP1530647A1 (de) | 2005-05-18 |
| EP1530647B1 EP1530647B1 (de) | 2009-03-25 |
Family
ID=30775277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP03793708A Expired - Lifetime EP1530647B1 (de) | 2002-08-14 | 2003-08-08 | Formulierung für den einsatz in der chromfrei- oder chromgerbung |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US7771489B2 (de) |
| EP (1) | EP1530647B1 (de) |
| KR (1) | KR20050053609A (de) |
| CN (1) | CN100363507C (de) |
| AR (1) | AR040862A1 (de) |
| AT (1) | ATE426683T1 (de) |
| AU (1) | AU2003260394A1 (de) |
| BR (1) | BR0313072A (de) |
| DE (2) | DE10237259A1 (de) |
| WO (1) | WO2004022790A1 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10255095A1 (de) | 2002-11-26 | 2004-06-03 | Basf Ag | Verfahren zur Herstellung eines Leder-Halbfabrikates |
| MX2010012544A (es) * | 2008-05-16 | 2011-03-15 | Midori Hokuyo Co Ltd | Recubrimiento superior. |
| CN101509046B (zh) * | 2009-03-19 | 2012-05-23 | 陕西科技大学 | 皮革用环保增厚型纳米复合鞣剂的制备方法 |
| CN102586504B (zh) * | 2011-12-20 | 2014-03-05 | 河北东明皮革有限公司 | 绵羊皮革鞣制工艺 |
| CN103060488B (zh) * | 2012-12-26 | 2014-04-16 | 四川亭江新材料股份有限公司 | 一种环保型坯革生产方法 |
| CN103014192A (zh) * | 2012-12-28 | 2013-04-03 | 陕西科技大学 | 脂肪酸改性蒙脱土制备阻燃型纳米复合加脂剂的方法 |
| GB201306607D0 (en) | 2013-04-11 | 2013-05-29 | Xeros Ltd | Method for treating an animal substrate |
| GB201417487D0 (en) * | 2014-10-03 | 2014-11-19 | Xeros Ltd | Method for treating an animal substrate |
| GB201418006D0 (en) | 2014-10-10 | 2014-11-26 | Xeros Ltd | Animal skin substrate treatment apparatus and method |
| GB201418007D0 (en) | 2014-10-10 | 2014-11-26 | Xeros Ltd | Animal skin substrate Treatment apparatus and method |
| KR101518466B1 (ko) * | 2014-12-29 | 2015-05-11 | (주)신도레더 | 소파용 천연가죽의 제조방법 |
| KR101518467B1 (ko) * | 2014-12-30 | 2015-05-11 | (주)신도레더 | 소파용 천연가죽 |
| PT3059327T (pt) * | 2015-02-19 | 2017-11-16 | Taminco Finland Oy | Método de curtimento com crómio ambientalmente amigo |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE969689C (de) * | 1953-02-27 | 1958-07-03 | Bayer Ag | Verfahren zur Verbesserung der Schleifbarkeit von Ledern, insbesondere Velourledern |
| CA618725A (en) * | 1957-05-17 | 1961-04-18 | Mauthe Gustav | Process for the filling of leather |
| US2992936A (en) * | 1958-11-21 | 1961-07-18 | Georgia Kaolin Co | Clay products and methods of producing them |
| US3719514A (en) * | 1967-11-24 | 1973-03-06 | Staley Mfg Co A E | Starch binder composition |
| US4272242A (en) * | 1977-07-16 | 1981-06-09 | Henkel Kommanditgesellschaft Auf Aktien | Use of water-insoluble aluminosilicates in tanning process for the production of leather |
| DE3704465C2 (de) * | 1987-02-13 | 1995-11-02 | Roehm Gmbh | Flüssig-Formulierungen von Enzymen |
| PL323618A1 (en) * | 1996-12-20 | 1998-06-22 | Tfl Ledertechnik Gmbh & Co Kg | Hide processing compositions |
| AU2001291026B2 (en) * | 2000-09-21 | 2005-04-28 | Rohm And Haas Company | Emulsion polymerization methods involving lightly modified clay and compositions comprising same |
| AU2002253882A1 (en) * | 2001-01-30 | 2002-08-28 | The Procter And Gamble Company | Coating compositions for modifying surfaces |
| CN1143868C (zh) * | 2001-10-26 | 2004-03-31 | 中国科学院长春应用化学研究所 | 原位乳液聚合制备聚丙烯酸酯/粘土纳米复合材料的方法 |
-
2002
- 2002-08-14 DE DE10237259A patent/DE10237259A1/de not_active Withdrawn
-
2003
- 2003-08-08 EP EP03793708A patent/EP1530647B1/de not_active Expired - Lifetime
- 2003-08-08 KR KR1020057002374A patent/KR20050053609A/ko not_active Withdrawn
- 2003-08-08 AU AU2003260394A patent/AU2003260394A1/en not_active Abandoned
- 2003-08-08 AT AT03793708T patent/ATE426683T1/de not_active IP Right Cessation
- 2003-08-08 DE DE50311346T patent/DE50311346D1/de not_active Expired - Lifetime
- 2003-08-08 CN CNB038195127A patent/CN100363507C/zh not_active Expired - Fee Related
- 2003-08-08 BR BRPI0313072-0A patent/BR0313072A/pt not_active IP Right Cessation
- 2003-08-08 WO PCT/EP2003/008830 patent/WO2004022790A1/de not_active Ceased
- 2003-08-08 US US10/524,047 patent/US7771489B2/en not_active Expired - Fee Related
- 2003-08-13 AR AR20030102922A patent/AR040862A1/es unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2004022790A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1530647B1 (de) | 2009-03-25 |
| US20060101584A1 (en) | 2006-05-18 |
| CN1675381A (zh) | 2005-09-28 |
| KR20050053609A (ko) | 2005-06-08 |
| AU2003260394A1 (en) | 2004-03-29 |
| DE10237259A1 (de) | 2004-02-26 |
| AR040862A1 (es) | 2005-04-20 |
| BR0313072A (pt) | 2007-07-17 |
| CN100363507C (zh) | 2008-01-23 |
| ATE426683T1 (de) | 2009-04-15 |
| US7771489B2 (en) | 2010-08-10 |
| DE50311346D1 (de) | 2009-05-07 |
| WO2004022790A1 (de) | 2004-03-18 |
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