EP0569410A1 - Procede d'auto-tannage, de pre-tannage et de co-tannage de cuirs et de peaux, et de retannage de cuirs et de peaux. - Google Patents
Procede d'auto-tannage, de pre-tannage et de co-tannage de cuirs et de peaux, et de retannage de cuirs et de peaux.Info
- Publication number
- EP0569410A1 EP0569410A1 EP92903337A EP92903337A EP0569410A1 EP 0569410 A1 EP0569410 A1 EP 0569410A1 EP 92903337 A EP92903337 A EP 92903337A EP 92903337 A EP92903337 A EP 92903337A EP 0569410 A1 EP0569410 A1 EP 0569410A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tanning
- groups
- carbonyl compounds
- case
- leather
- 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
- 238000000034 method Methods 0.000 title claims abstract description 22
- 239000010985 leather Substances 0.000 title claims description 27
- 150000001728 carbonyl compounds Chemical class 0.000 claims abstract description 19
- 150000001241 acetals Chemical class 0.000 claims abstract description 10
- 125000004209 (C1-C8) alkyl group Chemical group 0.000 claims abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 7
- 239000001257 hydrogen Substances 0.000 claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 6
- 125000004178 (C1-C4) alkyl group Chemical group 0.000 claims abstract description 5
- 125000004432 carbon atom Chemical group C* 0.000 claims abstract description 5
- 125000004433 nitrogen atom Chemical group N* 0.000 claims abstract description 5
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims abstract description 5
- 125000003884 phenylalkyl group Chemical group 0.000 claims abstract description 4
- 125000003277 amino group Chemical group 0.000 claims abstract description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims abstract description 3
- 125000005843 halogen group Chemical group 0.000 claims abstract description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 3
- 125000000020 sulfo group Chemical group O=S(=O)([*])O[H] 0.000 claims abstract description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 150000002431 hydrogen Chemical class 0.000 claims description 3
- 125000004437 phosphorous atom Chemical group 0.000 claims description 2
- 125000000229 (C1-C4)alkoxy group Chemical group 0.000 abstract 1
- 125000004429 atom Chemical group 0.000 abstract 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229910052698 phosphorus Inorganic materials 0.000 abstract 1
- 239000003795 chemical substances by application Substances 0.000 description 22
- -1 phenyl radicals Chemical class 0.000 description 16
- 150000003254 radicals Chemical class 0.000 description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 6
- 150000001299 aldehydes Chemical class 0.000 description 5
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 239000000395 magnesium oxide Substances 0.000 description 4
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 4
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 4
- 229920001864 tannin Polymers 0.000 description 4
- 239000001648 tannin Substances 0.000 description 4
- 235000018553 tannin Nutrition 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 2
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 210000000988 bone and bone Anatomy 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 2
- 125000005842 heteroatom Chemical group 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 125000004108 n-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 125000004123 n-propyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])* 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000002639 sodium chloride Nutrition 0.000 description 2
- 235000013311 vegetables Nutrition 0.000 description 2
- VDFVNEFVBPFDSB-UHFFFAOYSA-N 1,3-dioxane Chemical compound C1COCOC1 VDFVNEFVBPFDSB-UHFFFAOYSA-N 0.000 description 1
- WNXJIVFYUVYPPR-UHFFFAOYSA-N 1,3-dioxolane Chemical compound C1COCO1 WNXJIVFYUVYPPR-UHFFFAOYSA-N 0.000 description 1
- ICOZHMGZBBNHMH-UHFFFAOYSA-N 1-(2-oxopropoxy)propan-2-one Chemical compound CC(=O)COCC(C)=O ICOZHMGZBBNHMH-UHFFFAOYSA-N 0.000 description 1
- 125000006282 2-chlorobenzyl group Chemical group [H]C1=C([H])C(Cl)=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000004182 2-chlorophenyl group Chemical group [H]C1=C([H])C(Cl)=C(*)C([H])=C1[H] 0.000 description 1
- 125000006290 2-hydroxybenzyl group Chemical group [H]OC1=C(C([H])=C([H])C([H])=C1[H])C([H])([H])* 0.000 description 1
- 125000000094 2-phenylethyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000006186 3,5-dimethyl benzyl group Chemical group [H]C1=C(C([H])=C(C([H])=C1C([H])([H])[H])C([H])([H])*)C([H])([H])[H] 0.000 description 1
- 125000003852 3-chlorobenzyl group Chemical group [H]C1=C([H])C(=C([H])C(Cl)=C1[H])C([H])([H])* 0.000 description 1
- 125000004179 3-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C(Cl)=C1[H] 0.000 description 1
- 125000006291 3-hydroxybenzyl group Chemical group [H]OC1=C([H])C([H])=C([H])C(=C1[H])C([H])([H])* 0.000 description 1
- 125000006180 3-methyl benzyl group Chemical group [H]C1=C([H])C(=C([H])C(=C1[H])C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000006201 3-phenylpropyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 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 1
- 125000006283 4-chlorobenzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1Cl)C([H])([H])* 0.000 description 1
- 125000003143 4-hydroxybenzyl group Chemical group [H]C([*])([H])C1=C([H])C([H])=C(O[H])C([H])=C1[H] 0.000 description 1
- 125000004172 4-methoxyphenyl group Chemical group [H]C1=C([H])C(OC([H])([H])[H])=C([H])C([H])=C1* 0.000 description 1
- 125000006181 4-methyl benzyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1C([H])([H])[H])C([H])([H])* 0.000 description 1
- UQRONKZLYKUEMO-UHFFFAOYSA-N 4-methyl-1-(2,4,6-trimethylphenyl)pent-4-en-2-one Chemical group CC(=C)CC(=O)Cc1c(C)cc(C)cc1C UQRONKZLYKUEMO-UHFFFAOYSA-N 0.000 description 1
- QDCJIPFNVBDLRH-UHFFFAOYSA-N 5,5-dimethyl-1,3-dioxane Chemical compound CC1(C)COCOC1 QDCJIPFNVBDLRH-UHFFFAOYSA-N 0.000 description 1
- FGWHNGDOJHDLEI-UHFFFAOYSA-N 5-butyl-5-ethyl-1,3-dioxane Chemical group CCCCC1(CC)COCOC1 FGWHNGDOJHDLEI-UHFFFAOYSA-N 0.000 description 1
- 241000283690 Bos taurus Species 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000004280 Sodium formate Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- CIUQDSCDWFSTQR-UHFFFAOYSA-N [C]1=CC=CC=C1 Chemical compound [C]1=CC=CC=C1 CIUQDSCDWFSTQR-UHFFFAOYSA-N 0.000 description 1
- 125000003172 aldehyde group Chemical group 0.000 description 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 1
- 125000001797 benzyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C([H])([H])* 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- BFGKITSFLPAWGI-UHFFFAOYSA-N chromium(3+) Chemical class [Cr+3] BFGKITSFLPAWGI-UHFFFAOYSA-N 0.000 description 1
- 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 1
- 229910000356 chromium(III) sulfate Inorganic materials 0.000 description 1
- 239000011696 chromium(III) sulphate Substances 0.000 description 1
- 235000015217 chromium(III) sulphate Nutrition 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- UKJLNMAFNRKWGR-UHFFFAOYSA-N cyclohexatrienamine Chemical group NC1=CC=C=C[CH]1 UKJLNMAFNRKWGR-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 125000000959 isobutyl group Chemical group [H]C([H])([H])C([H])(C([H])([H])[H])C([H])([H])* 0.000 description 1
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000000468 ketone group Chemical group 0.000 description 1
- 239000000991 leather dye Substances 0.000 description 1
- 125000000040 m-tolyl group Chemical group [H]C1=C([H])C(*)=C([H])C(=C1[H])C([H])([H])[H] 0.000 description 1
- 238000004519 manufacturing process 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
- 239000000203 mixture Substances 0.000 description 1
- 125000001280 n-hexyl group Chemical group C(CCCCC)* 0.000 description 1
- 125000000740 n-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])* 0.000 description 1
- 125000003261 o-tolyl group Chemical group [H]C1=C([H])C(*)=C(C([H])=C1[H])C([H])([H])[H] 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- AUONHKJOIZSQGR-UHFFFAOYSA-N oxophosphane Chemical compound P=O AUONHKJOIZSQGR-UHFFFAOYSA-N 0.000 description 1
- 125000003854 p-chlorophenyl group Chemical group [H]C1=C([H])C(*)=C([H])C([H])=C1Cl 0.000 description 1
- 125000001037 p-tolyl group Chemical group [H]C1=C([H])C(=C([H])C([H])=C1*)C([H])([H])[H] 0.000 description 1
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000011780 sodium chloride Substances 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
- 239000000126 substance Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 150000003751 zinc Chemical class 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 150000003754 zirconium Chemical class 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
- C14C3/08—Chemical tanning by organic agents
- C14C3/16—Chemical tanning by organic agents using aliphatic aldehydes
Definitions
- the present invention relates to an improved method for sole tanning, pretanning and tanning of pelts and pelts and for retanning leather and hide.
- Aldehydes and especially dialdehydes such as glutardialdehyde are often described in the literature as leather tanning agents and are frequently used in practice. For example, the
- DE-A-17 69059 describes a process for the production of leather by treating tannable material with zinc salts, water-soluble sulfates and substances which release aldehydes or aldehydes and aftertreatment with dulling agents.
- Toxicity or potential health risks of the aldehydes used make the tanning process problematic because protective measures have to be taken and a relatively high amount of tanning agent is required.
- R 1 denotes hydrogen, C 1 -C 8 -alkyl groups, phenylalkyl groups with a total of up to 12 C atoms or phenyl groups, phenyl radicals present being represented by 1 or 2
- C 1 -C 4 alkyl groups, C 1 -C 4 alkoxy groups, hydroxyl groups, amino groups, carboxyl groups, sulfo groups or halogen atoms may be substituted, n represents 1, 2, 3 or 4 and
- R 2 stands for C 1 -C 4 alkyl
- R 1 radicals are:
- C 1 -C 8 alkyl groups for example methyl, ethyl, n-propyl,
- phenylalkyl groups optionally substituted on the phenyl radical with a total of up to 12 C atoms, preferably up to 10 C atoms, e.g.
- R 1 radicals are present, these may be the same or different.
- R 1 is preferably hydrogen and C 1 -C 8 -alkyl groups, in particular hydrogen alone.
- the divalent bridge members O, S, SO, SO 2 and NH and the tertiary N atom are particularly preferred. Of these, O and S are particularly preferred.
- acetals if one or more aldehyde groups are present
- ketals if one or more keto groups are present
- the radicals customary for this are usually used as acetal or ketal radicals, for example C 1 -C 8 -alkyl groups, preferably C 1 -C 4 -alkyl groups, such as methyl, ethyl, n-propyl, n-butyl or 2-ethylhexyl.
- the two acetal or ketal residues can be different or preferably the same.
- these two radicals can form a five- or six-membered ring, for example a 1,3-dioxolane, 1,3-dioxane, 5,5-dimethyl-1,3-dioxane or
- Typical representatives of the compounds I which can be used as tanning agents are 3-oxaglutardialdehyde and its bis-dimethyl and bis-diethyl acetal, 3-thiaglutardialdehyde and its bis-dimethyl and bis-diethyl acetal and diacetonyl ether.
- the compounds I and their acetals or ketals are known in principle, and they are prepared by the relevant methods given in the literature.
- the tanning process according to the invention is outstandingly suitable for tanning alone and pretanning skins and skins in an aqueous liquor.
- the procedure is advantageously such that the pickled pelts, for example cowhide pelts with a gap thickness of 1.5 to 4 mm, or pelts, for example sheepskin pelts, at a pH of 2 to 7, in particular 2.5 to 4, and one Temperature of 15 to 50 °, in particular 25 to 45 ° C, are treated with an aqueous solution or dispersion of the carbonyl compounds I for a period of 3 to 20 hours.
- the treatment takes place, for example, by drumming in a barrel.
- the required amount of carbonyl compounds I is normally 2 to 30% by weight, in particular 5 to 20% by weight, based on the pelt weight.
- the fleet length, i.e. the percentage weight ratio of the treatment liquor to the goods is usually 30 to 200% for the bare and 100 to 2000% for the bare, in each case based on the bare weight.
- the leather or fur is usually adjusted to a pH of 4 to 8, in particular 5 to 7, for which purpose magnesium oxide, sodium carbonate or sodium hydrogen carbonate is used, optionally treated with further tanning agents and, if desired, dyed after the tanning process has ended and greased.
- the tanning process according to the invention is also outstandingly suitable for tanning bare and pelted skin together with the tanning agents of the main tanning process, which can be, for example, chrome or aluminum tanning.
- the working conditions regarding pH, temperature and duration of the treatment are adjusted to the requirements of the main components of the tanning, the same applies to the Treatment apparatus and the length of the liquor as well as for the after-treatment.
- the required amount of carbonyl compounds I is normally 0.1 to 20% by weight, in particular 0.5 to 15% by weight, based on the pelt weight.
- the tanning process according to the invention is also outstandingly suitable for retanning leather and fur which has already been tanned, for example chrome leather, in an aqueous liquor. It is usually carried out in such a way that the pickled pelts and skins, for example cowhide pelts with a gap thickness of 1.5 to 4 mm, are used, for example, with a customary chromium-containing tanning agent such as a chromium (III) salt, e.g.
- a customary chromium-containing tanning agent such as a chromium (III) salt, e.g.
- Chromium (III) sulfate tanned in a manner known per se, the pretanned skins obtained in this way (with chrome tanning "wet blues") deacidified and at a pH of 2 to 7, in particular 2.5 to 4, and at temperatures of 15 to 50 ° C, in particular 25 to 45 ° C, treated with an aqueous solution or dispersion of the carbonyl compounds I for a period of 1 to 12 hours.
- This treatment takes place, for example, by drumming in a barrel.
- the amount of carbonyl compounds I required, based on the shaved weight of the leather, is normally 2 to 30% by weight, in particular 5 to 20% by weight.
- the liquor length is usually 30 to 200% for bare and 100 to 2000% for bare, each based on the fold weight of the leather.
- the leather or fur is usually adjusted to a pH of 3 to 5, for example using magnesium oxide or an organic acid such as formic acid or its salts, and, if desired, dyed and after the treatment greased.
- the leather or fur retanned according to the invention may also have been treated with other tanning agents, such as polymer tanning agents or syntans, before retanning with the carbonyl compounds I.
- the carbonyl compounds I can also be used simultaneously with such additional tanning agents, for example in main tanning.
- tanning agents As additional or simultaneously used tanning agents, all usual agents with tanning effects on bare or fur bare are considered. A comprehensive treatment of such tannins can be found, for example, in Ullmann's encyclopedia of
- mineral tannins e.g. Chromium, aluminum, zinc and zirconium salts
- synthetic tanning agents such as the polymer tanning agents and syntans already mentioned above
- vegetable (vegetable) tanning agents e.g. Chromium, aluminum, zinc and zirconium salts
- leather and furs are produced which, in comparison to the products obtained with previously known aldehyde tannins such as glutardialdehyde, have not only a full and very soft feel and high shrinking temperatures, but also a significantly improved tear and tensile strength.
- aldehyde tannins such as glutardialdehyde
- the leather and skins tanned according to the invention no longer have a disturbing yellow color.
- Another advantage of the tanning process according to the invention is the low volatility of the carbonyl compounds I used, which has an effect, for example, on the amount of these tanning agents used, which need only be relatively low.
- carbonyl compounds I are universal tanning agents in a sense, since they are common with all other tanning agents
- Tanning agents can be combined and can be used both for sole, pre-and co-tanning.
- sheepskin pelt with 3-oxaglutardialdehyde Solitary tanning of sheepskin pelt with 3-oxaglutardialdehyde
- the usual sheepskin pelt was added to a fleet length of 1500% with 60% by weight of common salt, 12% by weight of common fatliquor and 18% by weight of 3-oxaglutardialdehyde, each based on the dry weight of the pelt and drummed for 4 hours at 35 ° C and a pH of 3.2 in the barrel. Then a pH of 5.5 was set with sodium carbonate.
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)
Abstract
L'invention concerne un procédé d'auto-tannage, de pré-tannage et de co-tannage de cuirs et de peaux, et de retannage de cuirs et de peaux, procédé selon lequel on utilise des composés carbonyle de la formule (I) dans laquelle R1 représente hydrogène, des groupes alkyle C1-C8, des groupes phénylalkyle ayant un total d'atomes de carbone pouvant aller jusqu'à 12 ou des groupes phényle, des restes phényle pouvant être substitués par un ou deux groupes alkyle C1-C4, groupes alcoxy C1-C4, groupes hydroxyle, groupes amino, groupes carboxyle, groupes sulfo ou atomes d'halogène; n vaut 1, 2, 3 ou ; et x représente le reste OH, SH, NH2 ou PH2, si n = 1, un pont O, S, SO, SO2, NH, NR2, PH ou PR2, si n = 2, R2 représentant alkyle C1-C4, un atome tertiaire N ou P ou le groupe trivalent P = 0, si n = 3, et un atome N quaternaire, si n = 4. On peut également utiliser les acétals ou les cétals correspondants des composés carbonyle de la formule (I).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4102545 | 1991-01-29 | ||
| DE4102545A DE4102545A1 (de) | 1991-01-29 | 1991-01-29 | Verfahren zum alleingerben, vorgerben und mitgerben von bloessen und fellbloessen und zum nachgerben von leder und fell |
| PCT/EP1992/000116 WO1992013105A1 (fr) | 1991-01-29 | 1992-01-21 | Procede d'auto-tannage, de pre-tannage et de co-tannage de cuirs et de peaux, et de retannage de cuirs et de peaux |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0569410A1 true EP0569410A1 (fr) | 1993-11-18 |
| EP0569410B1 EP0569410B1 (fr) | 1995-03-29 |
Family
ID=6423909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92903337A Expired - Lifetime EP0569410B1 (fr) | 1991-01-29 | 1992-01-21 | Procede d'auto-tannage, de pre-tannage et de co-tannage de cuirs et de peaux, et de retannage de cuirs et de peaux |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5372609A (fr) |
| EP (1) | EP0569410B1 (fr) |
| JP (1) | JPH06504800A (fr) |
| DE (2) | DE4102545A1 (fr) |
| ES (1) | ES2070632T3 (fr) |
| WO (1) | WO1992013105A1 (fr) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DK0554216T3 (da) * | 1992-01-28 | 1996-08-19 | Ciba Geigy Ag | Fremgangsmåde til pickling og forgarvning af ugarvede læderhuder |
| DE19906190A1 (de) * | 1999-02-15 | 2000-08-17 | Boehme Chem Fab Kg | Gerbverfahren |
| BR9901948B1 (pt) * | 1999-04-30 | 2008-11-18 | processo de curtimento de couros com compostos carbonÍlicos. | |
| ES2640222T3 (es) * | 2007-10-18 | 2017-11-02 | Bobst Group Italia Spa | Conjunto de cuchilla raspadora y método que permite usar diferentes tintas |
| ITUB20152180A1 (it) * | 2015-07-14 | 2017-01-14 | Db Patents Ltd | Metodo migliorato per conciare una pelle animale. |
| DE102016004191A1 (de) * | 2016-04-06 | 2017-10-12 | Tfl Ledertechnik Gmbh | Zusammensetzung und Verfahren zur Gerbung basierend auf einem Acetal eines aldehydischen Gerbstoffes |
| DE102016004192A1 (de) * | 2016-04-06 | 2017-10-12 | Tfl Ledertechnik Gmbh | Zusammensetzung und Verfahren zur Gerbung basierend auf einem Acetal eines aldehydischen Gerbstoffes |
| EP3529382B1 (fr) * | 2016-10-18 | 2020-06-10 | Stahl International B.V. | Procédé de préparation de cuir |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2351338A (en) * | 1943-08-02 | 1944-06-13 | American Cyanamid Co | Tanning with d'-methoxy-d-hydroxymethyl diglycollic aldehyde |
| US2516283A (en) * | 1947-03-20 | 1950-07-25 | Adolph H Winheim | Resin impregnation of a dialdehyde tanned hide |
| BE593301A (fr) * | 1959-07-24 | |||
| DE1769059A1 (de) * | 1968-03-28 | 1971-08-19 | Basf Ag | Verfahren zur Herstellung von Leder |
| DE2137603A1 (de) * | 1971-07-27 | 1973-02-08 | Diamalt Ag | Mittel zum gerben von haeuten und fellen |
| DE2549527C3 (de) * | 1975-11-05 | 1980-03-20 | Basf Ag, 6700 Ludwigshafen | Verfahren zur Herstellung von Leder |
| BR8605597A (pt) * | 1985-11-13 | 1987-08-18 | Cassella Farbwerke Mainkur Ag | Tanino e processo para a sua obtencao e sua utilizacao |
-
1991
- 1991-01-29 DE DE4102545A patent/DE4102545A1/de not_active Withdrawn
-
1992
- 1992-01-21 EP EP92903337A patent/EP0569410B1/fr not_active Expired - Lifetime
- 1992-01-21 ES ES92903337T patent/ES2070632T3/es not_active Expired - Lifetime
- 1992-01-21 DE DE59201788T patent/DE59201788D1/de not_active Expired - Lifetime
- 1992-01-21 US US08/094,026 patent/US5372609A/en not_active Expired - Fee Related
- 1992-01-21 JP JP4503478A patent/JPH06504800A/ja active Pending
- 1992-01-21 WO PCT/EP1992/000116 patent/WO1992013105A1/fr active IP Right Grant
Non-Patent Citations (1)
| Title |
|---|
| See references of WO9213105A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0569410B1 (fr) | 1995-03-29 |
| JPH06504800A (ja) | 1994-06-02 |
| WO1992013105A1 (fr) | 1992-08-06 |
| DE4102545A1 (de) | 1992-07-30 |
| ES2070632T3 (es) | 1995-06-01 |
| DE59201788D1 (de) | 1995-05-04 |
| US5372609A (en) | 1994-12-13 |
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