WO2004022790A1 - Formulierung für den einsatz in der chromfrei- oder chromgerbung - Google Patents
Formulierung für den einsatz in der chromfrei- oder chromgerbung Download PDFInfo
- Publication number
- WO2004022790A1 WO2004022790A1 PCT/EP2003/008830 EP0308830W WO2004022790A1 WO 2004022790 A1 WO2004022790 A1 WO 2004022790A1 EP 0308830 W EP0308830 W EP 0308830W WO 2004022790 A1 WO2004022790 A1 WO 2004022790A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- average particle
- tannins
- particle diameter
- less
- clay mineral
- Prior art date
Links
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)
- Coloring (AREA)
- Pigments, Carbon Blacks, Or Wood Stains (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/524,047 US7771489B2 (en) | 2002-08-14 | 2003-08-08 | Formulation for use in chrome or chrome-free tannage |
DE50311346T DE50311346D1 (de) | 2002-08-14 | 2003-08-08 | Formulierung für den einsatz in der chromfrei- oder chromgerbung |
EP03793708A EP1530647B1 (de) | 2002-08-14 | 2003-08-08 | Formulierung für den einsatz in der chromfrei- oder chromgerbung |
BRPI0313072-0A BR0313072A (pt) | 2002-08-14 | 2003-08-08 | formulação para uso em curtimento com cromo ou sem cromo, e, uso de minerais de argila |
AU2003260394A AU2003260394A1 (en) | 2002-08-14 | 2003-08-08 | Formulation for use in chrome or chrome-free tannage |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10237259.4 | 2002-08-14 | ||
DE10237259A DE10237259A1 (de) | 2002-08-14 | 2002-08-14 | Formulierung für den Einsatz in der Chromfrei- oder Chromgerbung |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004022790A1 true WO2004022790A1 (de) | 2004-03-18 |
Family
ID=30775277
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2003/008830 WO2004022790A1 (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) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10255095A1 (de) | 2002-11-26 | 2004-06-03 | Basf Ag | Verfahren zur Herstellung eines Leder-Halbfabrikates |
US9212403B2 (en) * | 2008-05-16 | 2015-12-15 | Midori Hokuyo Co., Ltd. | Topcoat |
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 |
EP3059327B1 (de) * | 2015-02-19 | 2017-09-13 | Taminco Finland Oy | Umweltfreundliches chrom-gerbverfahren |
Citations (3)
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 |
DE1263978B (de) * | 1957-05-17 | 1968-03-21 | Bayer Ag | Verfahren zum Fuellen von Leder |
CN1344751A (zh) * | 2001-10-26 | 2002-04-17 | 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 |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP1328553B1 (de) * | 2000-09-21 | 2006-11-29 | Rohm And Haas Company | Methoden und zusammensetzungen betreffend polare monomere und mehrwärtige kationen |
MXPA03006774A (es) * | 2001-01-30 | 2003-10-24 | Procter & Gamble | Composiciones de recubrimiento para modificacion de superficies. |
-
2002
- 2002-08-14 DE DE10237259A patent/DE10237259A1/de not_active Withdrawn
-
2003
- 2003-08-08 US US10/524,047 patent/US7771489B2/en not_active Expired - Fee Related
- 2003-08-08 KR KR1020057002374A patent/KR20050053609A/ko not_active Application Discontinuation
- 2003-08-08 AU AU2003260394A patent/AU2003260394A1/en not_active Abandoned
- 2003-08-08 DE DE50311346T patent/DE50311346D1/de not_active Expired - Lifetime
- 2003-08-08 EP EP03793708A patent/EP1530647B1/de not_active Expired - Lifetime
- 2003-08-08 CN CNB038195127A patent/CN100363507C/zh not_active Expired - Fee Related
- 2003-08-08 AT AT03793708T patent/ATE426683T1/de not_active IP Right Cessation
- 2003-08-08 WO PCT/EP2003/008830 patent/WO2004022790A1/de active Search and Examination
- 2003-08-08 BR BRPI0313072-0A patent/BR0313072A/pt not_active IP Right Cessation
- 2003-08-13 AR AR20030102922A patent/AR040862A1/es unknown
Patent Citations (3)
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 |
DE1263978B (de) * | 1957-05-17 | 1968-03-21 | Bayer Ag | Verfahren zum Fuellen von Leder |
CN1344751A (zh) * | 2001-10-26 | 2002-04-17 | 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 |
Non-Patent Citations (2)
Title |
---|
DATABASE WPI Section Ch Week 200260, Derwent World Patents Index; Class A14, AN 2002-558471, XP002260538 * |
LAKSHMIARAYANA Y. ET AL.: "A novel water dispersible bentonite-acrylic graft copolymer as a filler cum retanning agent", JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION, vol. 97, no. 1, 2002, pages 14 - 22, XP009020542 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
Also Published As
Publication number | Publication date |
---|---|
KR20050053609A (ko) | 2005-06-08 |
AR040862A1 (es) | 2005-04-20 |
EP1530647A1 (de) | 2005-05-18 |
EP1530647B1 (de) | 2009-03-25 |
DE10237259A1 (de) | 2004-02-26 |
BR0313072A (pt) | 2007-07-17 |
US7771489B2 (en) | 2010-08-10 |
US20060101584A1 (en) | 2006-05-18 |
AU2003260394A1 (en) | 2004-03-29 |
DE50311346D1 (de) | 2009-05-07 |
ATE426683T1 (de) | 2009-04-15 |
CN1675381A (zh) | 2005-09-28 |
CN100363507C (zh) | 2008-01-23 |
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