EP1651782A1 - Oberflächliche anwendung kationischer oder amphoterer polymere auf leder-halbfabrikaten - Google Patents

Oberflächliche anwendung kationischer oder amphoterer polymere auf leder-halbfabrikaten

Info

Publication number
EP1651782A1
EP1651782A1 EP04763684A EP04763684A EP1651782A1 EP 1651782 A1 EP1651782 A1 EP 1651782A1 EP 04763684 A EP04763684 A EP 04763684A EP 04763684 A EP04763684 A EP 04763684A EP 1651782 A1 EP1651782 A1 EP 1651782A1
Authority
EP
European Patent Office
Prior art keywords
leather
cationic
treatment agent
amphoteric
dyes
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP04763684A
Other languages
German (de)
English (en)
French (fr)
Inventor
Gerhard Wolf
Stephan Hüffer
Oliver Reese
Jürgen DECKER
Georg Igl
Stefan Schroeder
Günter Scherr
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BASF SE filed Critical BASF SE
Publication of EP1651782A1 publication Critical patent/EP1651782A1/de
Withdrawn legal-status Critical Current

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
    • C14C11/00—Surface finishing of leather
    • C14C11/003—Surface finishing of leather using macromolecular compounds
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/44—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders
    • D06P1/60—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed using insoluble pigments or auxiliary substances, e.g. binders using compositions containing polyethers
    • D06P1/607—Nitrogen-containing polyethers or their quaternary derivatives
    • D06P1/6076—Nitrogen-containing polyethers or their quaternary derivatives addition products of amines and alkylene oxides or oxiranes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/02—Material containing basic nitrogen
    • D06P3/04—Material containing basic nitrogen containing amide groups
    • D06P3/32—Material containing basic nitrogen containing amide groups leather skins

Definitions

  • the present invention relates to a method for treating leather and the use of water-soluble, cationic or amphoteric auxiliaries for surface finishing of leather.
  • the aim of tanning is to convert the fur or skin into a stable, non-spoiling material. This is calibrated by converting collagen fibers in the fur or in the skin into a stable product that is not rotting.
  • tanning improves a number of properties of the skin or skin, such as dimensional stability, abrasion resistance, resistance to chemicals and heat, improved suppleness and the ability to withstand repeated cycles of getting wet and drying.
  • Retanning is the post-treatment of pre-tanned leather in order to optimize color, levelness, softness, fullness and the behavior against water (hydrophobicity) and to fix tannins.
  • the generally anionic aftertreatment agents are fixed by cationic polymers.
  • tanning, retanning and dyeing are usually carried out in so-called tanning barrels using aqueous tanning agent / retanning agent solutions or dispersions or dye solutions.
  • Much of the Tanning agents and tanning agents are added to the tanning drums (liquors) as a powdery solid and / or solution.
  • a disadvantage of such post-treatment methods in tanning drums is that, for example, the dye or the fat is not fixed homogeneously on the leather, so that no targeted modification of the leather is possible.
  • a barrel treatment makes no differentiation between the meat and crust top of the leather possible.
  • strong, but not targeted or desired irregularities are sometimes formed.
  • large amounts of dye are necessary, especially when dyeing leather.
  • the leather treated in this way also generally has a very low level of authenticity.
  • the object of the present invention is therefore to provide a method for treating leather which avoids the disadvantages of the methods of the prior art.
  • This problem is solved by a method for treating leather.
  • the method for treating leather is characterized by the following process steps: (a) applying at least one cationic or amphoteric aqueous treatment agent to leather by means of RoUcoating and / or roller application and / or spray application and subsequently (b) treating the leather with an anionic leather treatment agent in the barrel.
  • the leather is optionally dried between process steps (a) and (b) and after process step (b). Drying can be carried out using customary processes known to the person skilled in the art, for example hanging drying, vacuum drying or tenter drying. Depending on the working conditions, the temperatures can be between 40 and 90 ° C.
  • Another object of the present invention is a method for treating leather in a second embodiment, which is characterized by the following process steps: (a) applying at least one cationic or amphoteric aqueous treatment agent to leather by means of RoUcoating and / or roller application and / or spray application with simultaneous application Use of organic and / or inorganic pigments and or anionic leather treatment agents, (b) optionally drying the leather treated in this way.
  • the cationic or amphoteric aqueous treatment agent used in the process according to the invention preferably comprises an epichlorohydrinamine polymer.
  • the polymer used in the inventive process preferably has a molecular weight of consistssmitt- sized 1 - 10 bis 2 • 10 g / mol, preferably 1 - 10 to nation 1 • 10 g / mol, particularly preferably 4 • 10 3 to 5 • 10 4 g / mol, on.
  • the concentration of the polymer in water is preferably 5 to 50% by weight, particularly preferably 10 to 35% by weight, in particular 18 to 25% by weight, in each case based on water.
  • the cationic or amphoteric aqueous treatment agent is composed of amine units and epichlorohydrin units.
  • the ratio of amine units to epichlorohydrin units is preferably 0.8: 1.2 to 1.2: 0.8, preferably 0.9: 1.1 to 1.1: 0.9, particularly preferably 0.92: 1, 08 to 1.08: 0.92.
  • the amine units can be formed from a single amine or from several, for example 2 or 3, different amines.
  • the epichlorohydrinamine polymer comprises amine units which consist of 0.5 to 0.8, preferably 0.6 to 0.7, proportions of dimethylaminopropylamine and 0.2 to 0.5, preferably 0.3 to 0 , 4, parts of benzylamine are composed.
  • the cationic auxiliary preferably has at least two general structural units (I) and (II) where R 1 , R 2 , R 3 , R 4 and R 5 have the following meaning:
  • R 'and R 2 - (CH 2 ) 3 N (CH 3 ) 2 , -CH 2 C 6 H 5 , - (CH 2 ) 2 NH 2 , - (CH 2 ) 2 OH, - (CH 2 ) 2 NH (CH 2 ) 2 NH 2 R 3 : H or alkyl,
  • R 4 and R 5 H or OH.
  • the general structural units (I) and (II) are present randomly, alternately or as blocks in the epichlorohydrinamine polymer.
  • the anionic leather treatment agent used after the treatment with the cationic or amphoteric aqueous treatment agent is preferably selected from the group consisting of dyes, fatliquoring agents and retanning agents.
  • the anionic leather treatment agent can have several of the aforementioned properties (dyeing, greasing, retanning) at the same time.
  • Suitable dyes are the leather dyes usually used, for example natural dyes, and also synthetic dyes, such as.
  • E. Heidemann also describes suitable dyes in "Fundamentals of Leather Manufacture", Eduard Roether KG, pages 432 to 448.
  • fatliquors The usual agents used for fatliquoring leather can be considered as fatliquors. It is preferably a) fatliquor based on animal fats, eg fish oil, claw oil, wool fat or lard oil, b) fatliquor based on vegetable fats, e.g. B. castor oil, coconut oil or olive oil, c) synthetic fatliquors, such as. B. chlorination and sulfochlorination products of paraffin hydrocarbons, synthetic fatty acid esters and ester oils, d) mineral oils and other petrochemical products.
  • animal fats e.g fish oil, claw oil, wool fat or lard oil
  • vegetable fats e.g. B. castor oil, coconut oil or olive oil
  • synthetic fatliquors such as. B. chlorination and sulfochlorination products of paraffin hydrocarbons, synthetic fatty acid esters and ester oils, d) mineral oils and other petro
  • These fatliquoring agents are preferably modified by sulfation, sulfitation or formation of sulfonic acids, so that they are soluble or emulsifiable in water. It is also possible to use a fatliquor mixture, one part of which has emulsifying properties and thus acts as an emulsifier for the remaining part. Suitable for this are, for. B. sulfated fatty alcohols. These fatliquoring agents are preferably used as aqueous solutions or emulsions.
  • the known chromium, aluminum, iron or zirconium salts are suitable as mineral tanning agents, for example chromium (III) chloride or sulfate, chromium alum, optionally basic aluminum chloride or sulfate, iron (III) chloride or sulfate, zirconium oxychloride and zirconium sulfate ,
  • the polymeric retanning agents are e.g. B. polyacrylates, copolymers containing acrylates, polyurethanes or polybutadienes.
  • synthetic retanning agents can also be used, for example synthetic, anionic, aromatic tanning agents (also called syntans), and their non-condensed precursors or the alkali metal and ammonium salts of these compounds.
  • Suitable precursors are naphthalene, diphenyl, terphenyl, phenols, cresols, 4,4-dihydroxydiphenyl sulfone, ß-naphthol, dihydroxybenzenes, resorcinol, 2,2-bis (hydoxyphenyl) propane and diaryl ethers such as diphenyl ether and ditolyl ether. which are sulfonated to the anionic uncondensed precursors in a manner known per se.
  • Anionic aromatic syntans are those which are obtainable by condensation of the sulfonated precursors alone or together with other, mostly unsulfonated precursors with formaldehyde and / or urea, for example
  • condensation products of types (I) - (III), (V) and (VII) - (X) are e.g. B. from Ullmann's Encyclopedia of Industrial Chemistry Vol. 16, (4), 140 (1979) and can be prepared by the methods described in the references given there.
  • reaction product of type (VI) and its preparation are known from EP-A-0 245 205. These reaction products can be condensed to products of type (V) by methods known per se (cf. for example GB-C-683084).
  • the cationic or amphoteric aqueous treatment agent in process step (a) is only applied to the crust surface of the leather, so that the anionic leather treatment agent is preferably bound on this side of the leather.
  • the present invention furthermore relates to the use of cationic or amphoteric aqueous treatment agents for surface treatment, in particular surface finishing, of semi-finished leather products.
  • a cationic or amphoteric aqueous treatment agent as described above is used.
  • These cationic or amphoteric aqueous treatment agents are preferably used to fix dyes, pigments and / or fats on a leather surface, in particular crust top instead of the meat side, to reduce the use of dyes in full tones, to improve the authenticity of pigment applications, to produce Stain leather, used to create fashionable effects, to create two-color effects by subsequent barrel dyeing and / or to calibrate a higher level of authenticity.
  • the present invention further relates to semi-finished leather products which have been treated by water-soluble, cationic or amphoteric polymers.
  • water-soluble, cationic or amphoteric polymers reference is made to the above statements.
  • An epichlorohydrinamine polymer as described above is preferably suitable as the cationic or amphoteric aqueous treatment agent.
  • the present invention shows a number of advantages over the prior art.
  • the aqueous, cationic or amphoteric auxiliaries are applied to the leather in a controlled manner.
  • a dye or fat is very well fixed on the leather.
  • the method according to the invention thus makes it possible to maintain a high level of authenticity of the treated leather (color fastness) and at the same time to reduce the individual formulation costs.
  • the overall leather quality is improved, especially with regard to levelness, color depth and number of defects.
  • the method according to the invention enables the production of printed or patterned leather. Examples of this are cloud effects or deliberate unevenness on the leather.
  • a commercially available, undyed chrome crust leather, tanned or produced with synthetic, vegetable or mineral tannins, greased with commercially available fatliquoring agents, is sprayed with 50 parts, dissolved in 950 parts of water, of the cationic compound according to the invention, prepared as above, and then treated dried. Then the crust leather treated in this way is soaked in a barrel for 90 minutes at 40 ° C. with 600% water, based on the crust weight. The liquor is drained off and dyed in 200% liquor at 30 ° C. with 4% of a commercially available dye for 90 minutes. After 90 minutes another 300% water is added at 50 ° C and dyeing for a further 30 minutes. Using 2.5% formic acid, added in two portions, the liquor is acidified to a pH of 3.5 within 60 minutes and dried. The dyeing of the leather obtained in this way was considerably more intensive than a comparison test without using the cationic auxiliary.
  • a chrome-containing crust leather was treated once with a solution of 150 parts of a commercially available pigment, 50 parts of the compound according to the invention, prepared as above, and 50 parts of isopropanol in 750 ml of water and briefly dried. There- After the crust leather treated in this way was broached with 1000% water, based on the fold weight (weight of the skin material in the barrel), at 40 ° C. for 10 minutes in the barrel. The liquor is drained off and dyed at 40 ° C. with 3% of two commercially available dyes for 80 minutes. Formic acid, added in two portions, is used to acidify and dry the liquor to a pH of 3.5 within 50 minutes. The color of the leather was considerably more intense than the comparison test without using the compound according to the invention. The levelness of the leather was also significantly increased. In particular, the light fastness was significantly improved compared to the zero test.
  • Buffer solution 40.85 g potassium hydrogen phthalate in 1 1 dist. Weigh in water, add 99.6 g of this solution with 0.4 ml of 0.2 N sodium hydroxide solution and make up to 200 ml with dist. Fill up with water
  • Preussmann reagent 4- (p-nitrobenzyl) pyridine as a 5% solution in acetone
  • Carbonate solution 138.21 g potassium carbonate in 1 1 dist. Dissolve water

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment And Processing Of Natural Fur Or Leather (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
EP04763684A 2003-08-06 2004-07-30 Oberflächliche anwendung kationischer oder amphoterer polymere auf leder-halbfabrikaten Withdrawn EP1651782A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10336453A DE10336453A1 (de) 2003-08-06 2003-08-06 Oberflächliche Anwendung kationischer oder amphoterer Polymere auf Leder-Halbfabrikaten
PCT/EP2004/008607 WO2005017210A1 (de) 2003-08-06 2004-07-30 Oberflächliche anwendung kationischer oder amphoterer polymere auf leder-halbfabrikaten

Publications (1)

Publication Number Publication Date
EP1651782A1 true EP1651782A1 (de) 2006-05-03

Family

ID=34112049

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04763684A Withdrawn EP1651782A1 (de) 2003-08-06 2004-07-30 Oberflächliche anwendung kationischer oder amphoterer polymere auf leder-halbfabrikaten

Country Status (7)

Country Link
US (1) US20070266501A1 (pt)
EP (1) EP1651782A1 (pt)
CN (1) CN100547084C (pt)
AR (1) AR045214A1 (pt)
BR (1) BRPI0413247A (pt)
DE (1) DE10336453A1 (pt)
WO (1) WO2005017210A1 (pt)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103243587B (zh) * 2013-05-28 2015-09-30 宁夏成丰农业科技开发股份有限公司 一种用于滩羊皮染色的工艺
CN116836616A (zh) * 2022-03-23 2023-10-03 贝内克-长顺汽车内饰材料（张家港）有限公司 一种用于皮革涂层的水性漆和相应皮革材料

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB419941A (en) * 1933-05-13 1934-11-13 Ici Ltd Treatment of leather
US4054542A (en) * 1975-04-14 1977-10-18 Buckman Laboratories, Inc. Amine-epichlorohydrin polymeric compositions
DE3530478A1 (de) * 1985-08-27 1987-03-05 Benckiser Knapsack Gmbh Verfahren zum faerben von ledern sowie dazu geeignete wasserloesliche, kationische polymere und verfahren zu ihrer herstellung
JP3136662B2 (ja) * 1991-07-19 2001-02-19 王子製紙株式会社 染料熱転写受像シート
JP3524200B2 (ja) * 1994-04-15 2004-05-10 キヤノン株式会社 加色用皮革処理方法、該処理がなされた皮革に行う皮革加色方法及び該皮革加色方法によって製造された皮革製品
US5709714A (en) * 1996-03-11 1998-01-20 Rohm And Haas Company Method of treating leather with amphoteric polymers
JP3898953B2 (ja) * 2000-05-16 2007-03-28 サンスター技研株式会社 熱硬化性組成物

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2005017210A1 *

Also Published As

Publication number Publication date
CN100547084C (zh) 2009-10-07
BRPI0413247A (pt) 2006-10-03
WO2005017210A1 (de) 2005-02-24
AR045214A1 (es) 2005-10-19
CN1833036A (zh) 2006-09-13
DE10336453A1 (de) 2005-03-03
US20070266501A1 (en) 2007-11-22

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