EP2956558A1 - Verfahren zur herstellung von leder - Google Patents
Verfahren zur herstellung von lederInfo
- Publication number
- EP2956558A1 EP2956558A1 EP14703867.3A EP14703867A EP2956558A1 EP 2956558 A1 EP2956558 A1 EP 2956558A1 EP 14703867 A EP14703867 A EP 14703867A EP 2956558 A1 EP2956558 A1 EP 2956558A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- leather
- acid
- methanesulfonic acid
- weight
- tanning
- 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
- 239000010985 leather Substances 0.000 title claims abstract description 59
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 claims abstract description 113
- 229940098779 methanesulfonic acid Drugs 0.000 claims abstract description 55
- 239000000203 mixture Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 26
- 239000002253 acid Substances 0.000 claims description 22
- 239000007864 aqueous solution Substances 0.000 claims description 18
- 150000003839 salts Chemical class 0.000 claims description 17
- 150000007513 acids Chemical class 0.000 claims description 11
- 238000004043 dyeing Methods 0.000 claims description 5
- 238000005554 pickling Methods 0.000 claims description 5
- 235000002639 sodium chloride Nutrition 0.000 description 20
- 239000003795 chemical substances by application Substances 0.000 description 14
- 210000003491 skin Anatomy 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 12
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 12
- 150000007524 organic acids Chemical class 0.000 description 12
- 235000005985 organic acids Nutrition 0.000 description 12
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 12
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 11
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 11
- 235000011130 ammonium sulphate Nutrition 0.000 description 11
- 238000007792 addition Methods 0.000 description 10
- 229940079827 sodium hydrogen sulfite Drugs 0.000 description 10
- 241001465754 Metazoa Species 0.000 description 9
- 229920001864 tannin Polymers 0.000 description 7
- 239000001648 tannin Substances 0.000 description 7
- 235000018553 tannin Nutrition 0.000 description 7
- 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 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 6
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 6
- 229910001424 calcium ion Inorganic materials 0.000 description 6
- 235000019253 formic acid Nutrition 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 150000007522 mineralic acids Chemical class 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 206010000496 acne Diseases 0.000 description 4
- -1 alkaline earth metal salts Chemical class 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 150000001991 dicarboxylic acids Chemical class 0.000 description 4
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical class OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical class OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 3
- 150000003863 ammonium salts Chemical class 0.000 description 3
- 235000015278 beef Nutrition 0.000 description 3
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 3
- 239000004327 boric acid Substances 0.000 description 3
- 235000010338 boric acid Nutrition 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 3
- 230000035617 depilation Effects 0.000 description 3
- 239000000975 dye Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 239000011780 sodium chloride Substances 0.000 description 3
- 235000013311 vegetables Nutrition 0.000 description 3
- 241000251468 Actinopterygii Species 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 2
- SXRSQZLOMIGNAQ-UHFFFAOYSA-N Glutaraldehyde Chemical compound O=CCCCC=O SXRSQZLOMIGNAQ-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 235000011054 acetic acid Nutrition 0.000 description 2
- WNLRTRBMVRJNCN-UHFFFAOYSA-N adipic acid Chemical compound OC(=O)CCCCC(O)=O WNLRTRBMVRJNCN-UHFFFAOYSA-N 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 150000001340 alkali metals Chemical class 0.000 description 2
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- 239000000292 calcium oxide Substances 0.000 description 2
- 235000012255 calcium oxide Nutrition 0.000 description 2
- 150000001733 carboxylic acid esters Chemical class 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000011651 chromium Substances 0.000 description 2
- XBDQKXXYIPTUBI-UHFFFAOYSA-N dimethylselenoniopropionate Chemical class CCC(O)=O XBDQKXXYIPTUBI-UHFFFAOYSA-N 0.000 description 2
- 235000021323 fish oil Nutrition 0.000 description 2
- 238000009472 formulation Methods 0.000 description 2
- 235000011087 fumaric acid Nutrition 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000004310 lactic acid Substances 0.000 description 2
- 235000014655 lactic acid Nutrition 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000010755 mineral Nutrition 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 150000002763 monocarboxylic acids Chemical class 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 229910017604 nitric acid Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 235000019198 oils Nutrition 0.000 description 2
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 230000002940 repellent Effects 0.000 description 2
- 239000005871 repellent Substances 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 2
- RTBFRGCFXZNCOE-UHFFFAOYSA-N 1-methylsulfonylpiperidin-4-one Chemical compound CS(=O)(=O)N1CCC(=O)CC1 RTBFRGCFXZNCOE-UHFFFAOYSA-N 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- 208000032544 Cicatrix Diseases 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- 241000289581 Macropus sp. Species 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 229920000388 Polyphosphate Polymers 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- 241000272534 Struthio camelus Species 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Chemical class OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 241000396377 Tranes Species 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000001361 adipic acid Substances 0.000 description 1
- 235000011037 adipic acid Nutrition 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- JFCQEDHGNNZCLN-UHFFFAOYSA-N anhydrous glutaric acid Natural products OC(=O)CCCC(O)=O JFCQEDHGNNZCLN-UHFFFAOYSA-N 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 238000001479 atomic absorption spectroscopy Methods 0.000 description 1
- 238000001636 atomic emission spectroscopy Methods 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000001680 brushing effect Effects 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical class O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 238000004040 coloring Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 210000002808 connective tissue Anatomy 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000002951 depilatory effect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 210000002615 epidermis Anatomy 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003925 fat Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 150000002238 fumaric acids Chemical class 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 159000000014 iron salts Chemical class 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 150000002689 maleic acids Chemical class 0.000 description 1
- 235000013372 meat Nutrition 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 150000002898 organic sulfur compounds Chemical class 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 235000011007 phosphoric acid Nutrition 0.000 description 1
- 150000003022 phthalic acids Chemical class 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000001205 polyphosphate Substances 0.000 description 1
- 235000011176 polyphosphates Nutrition 0.000 description 1
- 235000015277 pork Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical class O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
- 231100000241 scar Toxicity 0.000 description 1
- 230000037387 scars Effects 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 238000007920 subcutaneous administration Methods 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000010414 supernatant solution Substances 0.000 description 1
- 230000003655 tactile properties Effects 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 150000003504 terephthalic acids Chemical class 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 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
- C14C1/00—Chemical treatment prior to tanning
- C14C1/08—Deliming; Bating; Pickling; Degreasing
-
- 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
- C14C3/06—Mineral tanning using chromium compounds
-
- 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
- C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
- C14C9/02—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes using fatty or oily materials, e.g. fat liquoring
Definitions
- the present invention relates to a process for producing leather comprising a plurality of steps, characterized in that methanesulfonic acid is used in at least one step.
- Processes for making leather typically involve a variety of steps. Many steps of leather production are carried out in aqueous medium at a certain pH. The adjustment of the optimum pH is of great importance and influences the properties of the produced leather.
- the choice of a suitable acid to neutralize the leather has a significant influence on the quality of the leather produced. This is the case, for example, in the deliming step.
- too much acid can negatively affect the optical and physical properties of the leather, possibly because the raw hides swell too much. If one chooses a too weak acid, this can mean that the adjustment of the pH is slow or the acid or other substances needed for the production of the leather do not completely penetrate the rawhide. In addition to the pH, the properties of the leather are often influenced by the materials used and the manufacturing process in a way that is not always predictable.
- conventional leather production methods in the deliming step remove the lime residues adhering to the liming, for example with about 1% lactic acid, dilute acetic acid, formic acid or other organic acids.
- suitable acids are, for example, ammonium salts such as ammonium sulfate or ammonium chloride, boric acid, phosphoric acid or carbonic acid. Also possible is the use of hydrochloric acid or sulfuric acid.
- EP 563,139 describes the use of methanesulfonic acid for pimpling leather.
- the object of the present invention was to provide a process for producing leather which does not have the disadvantages of the prior art which gives soft and attractive leather and is efficient to perform.
- the object has been achieved by a process for producing leather comprising a plurality of steps, characterized in that methanesulfonic acid is used in at least one step.
- Animal skins are the skins of any dead animals such as beef, veal, pork, goat, sheep, kangaroo, fish, ostrich or game. It is irrelevant to the present invention whether the animals whose hides one wishes to treat were slaughtered, were huntmännisch killed or have died from natural causes.
- Processes for making leather typically involve a variety of steps.
- the hair is removed from the animal skin.
- This step is also referred to as a shearing step.
- the animal skin is usually treated with basic substances such as lime. Frequently, sodium hydroxide, sodium carbonate, sulfides or organic sulfur compounds are also added.
- the deboning step for example, meat remnants and subcutaneous connective tissue are mechanically removed from the animal skin.
- the deliming step also: descaling, English: deliming
- the basic components from the depilatory step are partially or completely neutralized.
- the animal skin is loosened and prepared for the absorption of tannin and thus on the actual tanning.
- a step of stroking is performed, in which the stroking of the skins, for example, by means of chisel on the tanner tree.
- the actual tanning steps are done with the addition of a tanning agent.
- Suitable tanning methods include the use of mineral salts (chromium-ill, aluminum, zirconium or iron salts), vegetable tanning with vegetable tannins (tannins in leaves, barks, woods and fruits), tanning (synonymously tanning) with fish and marine oils ( Trane) or with fats of the brain, synthetic tanning with synthetically produced tanning substances (syntans, resin tannins, polymer tanning agents, polyphosphates, paraffinsulfochloride), aldehyde tannin (formerly formaldehyde, today mainly glutaraldehyde). It is also possible to combine different tanning procedures.
- the leather After tanning, the leather is usually mechanically dehydrated (withering) and brought to a uniform thickness with folding machines.
- the final leather Shadows such as softness, color, fullness, structure, elasticity, water absorption etc. are determined by the wet finish.
- the coloring is often done with dyes that form a chemical bond with the leather fiber.
- Advantageous dyes are distinguished not only by the good dyeing properties (for example, tacking properties on the leather, combinability, large color palette) and fastness properties, but also by low environmental impact.
- the natural leather color depends, among other things, on the tanning agent used. Chrome tannins often give a light, greyish-green intrinsic color, vegetable oils can, for example, yellow-brown - reddish brown. Aluminum salts and synthetic tannins often yield white to light beige leather. Glutaraldehyde and fatty tanning agents usually color the leathers yellowish.
- a pH of 4 to 6.5 is usually set, preferably from 4.5 to 6.
- a more acidic pH is set to ensure uniform fixation of the fatliquoring agent through the leather cross section to reach.
- a pH of from 2 to 6, preferably from 2.5 to 5, particularly preferably from 3 to 4 and especially preferably from 3.2 to 3.5 is set towards the end of the fatliquoring step.
- processes for producing leather may include other steps in addition to the aforementioned steps.
- methanesulfonic acid is used in at least one of the steps for the production of leather.
- Methanesulfonic acid serves primarily to adjust the pH.
- Methanesulfonic acid is preferably added to the animal skin at the beginning of the actual working step.
- the operation consists essentially of the neutralization of basic components with acids, which according to the invention methanesulfonic acid include.
- the use of methanesulfonic acid in a particular step is also understood to mean the addition of methanesulfonic acid before the actual working step or after the preceding working step, if this serves to prepare the actual working step.
- Methanesulfonic acid is preferably used in at least one of the following steps: deliming, pickling, pickling, brushing, tanning, retanning, dyeing, fatliquoring.
- Methanesulfonic acid is particularly preferably used at least in the case of deliming and / or pickling and / or pickling and / or fatliquoring.
- methanesulfonic acid is used at least in the decarburization step. In another preferred embodiment, methanesulfonic acid is used at least in the fatliquoring step.
- Methanesulfonic acid is used according to the invention usually as an aqueous solution.
- methanesulfonic acid is used as 0.05 to 0.5% strength by weight aqueous solution, preferably 0.07 to 0.2% by weight and particularly preferably 0.08 to 0.15% by weight.
- methanesulfonic acid is used together with salts and / or other acids and / or acid derivatives.
- Suitable acid derivatives are, for example, esters or acid anhydrides.
- methanesulfonic acid is used with salts of methanesulfonic acid.
- Suitable salts of methanesulfonic acid include, for example, alkali metal or alkaline earth metal salts such as sodium, potassium, magnesium or calcium salts of methanesulfonic acid.
- methanesulfonic acid is used together with inorganic salts.
- suitable inorganic salts are, for example, salts of sulfuric acid, hydrohalic acids, phosphoric acid, boric acid, carbonic acid, nitric acid.
- suitable inorganic salts are, for example, ammonium sulfate, sodium sulfate, sodium chloride, ammonium chloride.
- methanesulfonic acid is used together with salts of organic acids.
- Suitable salts of organic acids are, for example, ammonium, alkali metal or alkaline earth metal salts of organic acids, such as ammonium, sodium, potassium or magnesium salts of organic acids.
- Suitable salts of organic acids are, for example, salts of monocarboxylic acids or dicarboxylic acids. Examples of suitable salts of organic acids are, for example, salts of formic acid, acetic acid, propionic acid, oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, tartaric acid, lactic acid, phthalic acid, terephthalic acid, maleic acid, fumaric acid.
- methanesulfonic acid is used together with other acids.
- Suitable other acids may be inorganic acids or organic acids.
- Suitable inorganic acids are, for example, sulfuric acid, hydrochloric acid, boric acid, carbonic acid, phosphoric acid.
- Suitable organic acids are, for example, monocarboxylic acids or dicarboxylic acids. Examples of suitable organic acids are formic, acetic, lactic, formic, propionic, oxalic, malonic, succinic, glutaric, adipic, tartaric, lactic, phthalic, terephthalic, maleic and fumaric acids.
- methanesulfonic acid is used in combination with ammonium sulfate.
- methanesulfonic acid is used in combination with formic acid.
- methanesulfonic acid is used in combination with one or more ammonium salts of dicarboxylic acids.
- methanesulfonic acid is used in combination with one or more aliphatic dicarboxylic acids.
- methanesulfonic acid is used in combination with one or more carboxylic acid esters.
- the amount of salts, other acids or acid derivatives can vary widely.
- an aqueous solution containing 0.05 to 0.2% by weight of methanesulfonic acid and 0.5 to 2% by weight of ammonium sulfate is used.
- a pH of 4 to 9, preferably 6 to 8.5 and particularly preferably 7.5 to 8.5 is set.
- the deliming step lasts from 30 minutes to 4 hours, in exceptional cases shorter or longer.
- the deliming step is completed in 45 to 90 minutes.
- Processes according to the invention are characterized in that they are simple to carry out and permit an efficient and rapid adjustment of the pH in the individual process steps.
- inventive methods allow the production of leather, which are characterized by advantageous optical and haptic properties.
- they are characterized by pleasant softness and do not swell so much, do not swell so much as leather, which are produced by conventional methods.
- the leathers produced according to the invention are characterized by a good softness and have a pleasant, appealing, fine and clean grain. In addition, they have good dyeing properties such as high uniformity and color brilliance.
- the physical properties such as tensile strength, tensile strength at break, elongation at break or curvature of the leather produced by the process according to the invention are comparable or better than those of leather, which have been prepared according to the prior art.
- leather produced according to the invention which has been prepared by using methanesulfonic acid in the deliming step, is distinguished, in addition to the advantages described above, by the fact that calcium ions can be removed from the leather very efficiently. As a result, in particular the softness and tear strength of the leather is advantageously influenced.
- Another object of the present invention is leather, which has been produced by the process according to the invention.
- Decalta 'RN Acid-reacting mixture of ammonium salts of inorganic acids and organic dicarboxylic acids
- Decalta 'Pic S Mixture of weak, water-soluble aliphatic dicarboxylic acids
- Decalta 'ESN liquid mixture of carboxylic acid esters Examples 1.1 to I.6
- a rawhide of beef was depilated and fleshed. The depilation took place with the addition of quick lime and sodium sulfide.
- the leathers were treated with decalcifier according to example 1.1 to I.6 in order to set a pH of 8. The skins were first treated at room temperature for 20 minutes with a mixture A and then for 60 minutes with a mixture B. Subsequently, the skins were subjected to tanning and retanning with identical chromium-tanning formulations.
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% by weight of ammonium sulfate.
- Mixture B aqueous solution containing 0.1 wt% sodium bisulfite, 0.14 wt% methanesulfonic acid (70 wt% in water) and 1, 5 wt% of an acid-reacting mixture of Decalta) RN.
- Example I.2 aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% by weight of ammonium sulfate.
- Mixture B aqueous solution containing 0.1 wt% sodium bisulfite, 0.14 wt% methanesulfonic acid (70 wt% in water) and 1, 5 wt% of an acid-reacting mixture of Decalta) RN.
- Example I.2 aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% by weight of ammonium sul
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% by weight of ammonium sulfate.
- Mixture B aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.3% by weight of decaltal ⁇ R > Pic S and 1.5% by weight of ammonium sulfate.
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% of decaltal ⁇ R > RN.
- Mixture B aqueous solution containing 0.1% by weight of sodium hydrogen sulfite, 0.14% by weight of methanesulfonic acid (70% strength by weight in water) and 1.5% of Decalta® RN.
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.5% of decaltal ⁇ R > RN.
- Mixture B aqueous solution containing 0.1 wt% sodium hydrogen sulfite, 0.3 wt% methane sulfonic acid (70 wt% in water) and 1, 5% by weight Decaltal ⁇ R> RN.
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.14% by weight of methanesulfonic acid (70% by weight in water).
- Mixture B aqueous solution containing 0.1 wt% sodium bisulfite, 0.14 wt% methanesulfonic acid (70 wt% in water) and 1, 2% by weight Decaltal ⁇ R> ESN.
- Mixture A aqueous solution containing 0.1% by weight of sodium hydrogen sulfite and 0.25% by weight of Decalta ) Pic S.
- Mixture B aqueous solution containing 0.1% by weight of sodium hydrogen sulfite, 0.25% by weight of decalta ) Pic S and 1.2% by weight of Decaltal ⁇ R > ESN.
- methanesulfonic acid made it possible to adjust the pH in a shorter time and gave clean and flat raw skins which were not so much swollen as skins which were subjected to deliming without methanesulfonic acid.
- the leathers made using methanesulfonic acid in the deleting step are softer than leathers made according to the prior art and have them nice, fine and clean scars.
- the physical properties are comparable to or better than those of leathers made according to the prior art.
- cowhide rawhide Four pieces of cowhide rawhide were depilated and fleshed. The depilation took place with the addition of quick lime and sodium sulfide. For deliming, the skins were first washed at room temperature for 20 minutes with water and then first with a 1, 2 wt% solution of ammonium sulfate and then with a 3.5
- Table 1 pH and calcium ion concentration in ppm in the deliming solution for Examples 11.1 and II.2, Ca 2+ concentration determined by means of atomic emission spectroscopy
- the pH of the deliming solutions for Examples 11.1 and II.2 was between 8.3 and 8.43 in both cases and was very similar.
- the content of free calcium ions in the deliming solution to Example 11.1 and II.2 was significantly higher with the addition of methanesulfonic acid than without the addition of methanesulfonic acid.
- the leathers of Examples 11.1 and II.2 were dried prior to or after completion of the deliming. 0.15 g of leather was placed in a 50 ml Erlenmeyer flask and 4 ml of a mixture of nitric acid and hydrochloric acid (mass ratio 1.3) were added. So- When the mixture was again cooled to room temperature, 1 ml of hydrogen peroxide was added thereto (32% by weight in water). The mixture was heated to 120 ° C for 180 min. The mixture was cooled to room temperature and made up to 50 ml volume with water. The content of calcium ions in the leather was determined by determining the concentration of calcium ions in the solution by atomic absorption spectrometer.
- the leathers of Examples 11.1 and II.2 were washed twice with water for 10 minutes. Subsequently, the skins were subjected to tanning and retanning with identical chromium-tanning formulations.
- Example II.2 (with the addition of methanesulfonic acid) were less swollen and softer than the leathers of Example 11.1 (without methanesulfonic acid).
- Chromium-tanned wet-blue leather (beef) was cut into 1-by-1 cm pieces and 25 g each was placed in a 250-ml glass flask.
- 25 g each was placed in a 250-ml glass flask.
- 5 g of fatliquoring agent according to Table 2 were given and in each case so much fully demineralized (VE) water that the amount of liquid in the flask including fatliquoring agent was 75 ml.
- the flasks were heated to 40 ° C for three hours.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP14703867.3A EP2956558B1 (de) | 2013-02-14 | 2014-02-12 | Verfahren zur herstellung von leder |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP13155256.4A EP2607499A3 (de) | 2013-02-14 | 2013-02-14 | Verfahren zur Herstellung von Leder |
PCT/EP2014/052691 WO2014124951A1 (de) | 2013-02-14 | 2014-02-12 | Verfahren zur herstellung von leder |
EP14703867.3A EP2956558B1 (de) | 2013-02-14 | 2014-02-12 | Verfahren zur herstellung von leder |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2956558A1 true EP2956558A1 (de) | 2015-12-23 |
EP2956558B1 EP2956558B1 (de) | 2016-11-16 |
Family
ID=47720387
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13155256.4A Withdrawn EP2607499A3 (de) | 2013-02-14 | 2013-02-14 | Verfahren zur Herstellung von Leder |
EP14703867.3A Active EP2956558B1 (de) | 2013-02-14 | 2014-02-12 | Verfahren zur herstellung von leder |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13155256.4A Withdrawn EP2607499A3 (de) | 2013-02-14 | 2013-02-14 | Verfahren zur Herstellung von Leder |
Country Status (12)
Country | Link |
---|---|
US (1) | US11001902B2 (de) |
EP (2) | EP2607499A3 (de) |
KR (1) | KR102230317B1 (de) |
CN (1) | CN104981549A (de) |
AR (1) | AR094785A1 (de) |
AU (1) | AU2014218021B2 (de) |
BR (1) | BR112015019537A2 (de) |
ES (1) | ES2616043T3 (de) |
MX (1) | MX2015010584A (de) |
TW (1) | TWI653341B (de) |
WO (1) | WO2014124951A1 (de) |
ZA (1) | ZA201506725B (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022124892A1 (en) | 2020-12-09 | 2022-06-16 | Stahl International B.V. | Process for deliming of hides, skins or pelts |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015154977A1 (en) | 2014-04-11 | 2015-10-15 | Basf Se | Process for acidizing using retarded acid formulations |
CN104313199B (zh) * | 2014-10-28 | 2016-03-09 | 北京泛博化学股份有限公司 | 小液比制备绵羊皮服装毛革的方法 |
US11242574B2 (en) * | 2016-06-14 | 2022-02-08 | Basf Se | Process for producing leather |
CN109485562B (zh) * | 2017-09-13 | 2022-11-25 | 斯塔尔国际有限公司 | 脱灰剂及其用途和脱灰方法 |
WO2020126855A1 (en) * | 2018-12-21 | 2020-06-25 | Basf Se | Mixture comprising methanesulfonic acid and sulfuric acid |
EP3670675A1 (de) * | 2018-12-21 | 2020-06-24 | LANXESS Deutschland GmbH | Lederhilfsmittel für die wasserwerkstatt |
CN113677335A (zh) * | 2019-02-13 | 2021-11-19 | DEBx医疗控股有限公司 | 用于从身体表面损伤和从口腔去除坏死组织或感染组织的组合物 |
IT202000017719A1 (it) * | 2020-07-22 | 2022-01-22 | Beken Italia S R L | Processo a ridotto impatto ambientale per la concia di pelli |
Family Cites Families (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2122125A (en) * | 1937-02-03 | 1938-06-28 | Ig Farbenindustrie Ag | Water-soluble condensation products and a process of producing same |
US2318454A (en) * | 1940-07-13 | 1943-05-04 | American Hyalsol Corp | Washing and deliming composition for limed hides |
CA618725A (en) * | 1957-05-17 | 1961-04-18 | Mauthe Gustav | Process for the filling of leather |
JPS49101535A (de) * | 1973-02-02 | 1974-09-25 | ||
IT1011668B (it) * | 1973-04-28 | 1977-02-10 | Roehm Gmbh | Procedimento di purga delle pelli |
DE2732217A1 (de) * | 1977-07-16 | 1979-02-01 | Henkel Kgaa | Verwendung feinteiliger wasserunloeslicher alkalialuminiumsilikate bei der lederherstellung |
FR2670800B1 (fr) * | 1990-12-19 | 1994-05-20 | Gaches Chimie Sa | Procede de traitement de peaux ou cuirs, agents de tannage et procede de fabrication. |
DE4131202A1 (de) * | 1991-09-19 | 1993-03-25 | Bayer Ag | Verfahren zur herstellung von chromleder |
DE59303282D1 (de) * | 1992-01-28 | 1996-08-29 | Ciba Geigy Ag | Verfahren zum Pickeln von Hautblössen |
DE4215389A1 (de) * | 1992-05-11 | 1993-11-18 | Basf Ag | Verfahren zum Entkälken von Häuten |
DE19516957C2 (de) * | 1995-05-12 | 2000-07-13 | Stockhausen Chem Fab Gmbh | Wasserlösliche Copolymere und Verfahren zu ihrer Herstellung und ihre Verwendung |
DE19624821A1 (de) * | 1996-06-21 | 1998-01-02 | Bayer Ag | Verfahren zur Gerbung von Leder |
US6254644B1 (en) * | 1997-02-26 | 2001-07-03 | Bayer Aktiengesellschaft | Biologically degradable leather |
US6777219B2 (en) * | 2002-03-13 | 2004-08-17 | Council Of Scientific And Industrial Research | Process for the preparation of alkaline protease |
DE10303311A1 (de) * | 2003-01-28 | 2004-07-29 | Basf Ag | Addukte auf Basis cyclischer Verbindungen und ihre Verwendung als Gerbstoffe und Konservierungsmittel |
DE10304959A1 (de) * | 2003-02-06 | 2004-08-19 | Basf Ag | Verfahren zur Herstellung von Leder |
DE10343904A1 (de) * | 2003-09-19 | 2005-04-21 | Basf Ag | Verfahren zur Herstellung von Copolymerisaten |
DE102005008034A1 (de) * | 2005-02-22 | 2006-08-31 | Lanxess Deutschland Gmbh | Säuregruppenhaltige Kondensationsprodukte |
EP2284285A4 (de) * | 2008-05-16 | 2013-03-20 | Midori Hokuyo Co Ltd | Decklack |
US11242574B2 (en) * | 2016-06-14 | 2022-02-08 | Basf Se | Process for producing leather |
-
2013
- 2013-02-14 EP EP13155256.4A patent/EP2607499A3/de not_active Withdrawn
-
2014
- 2014-02-12 CN CN201480008276.2A patent/CN104981549A/zh active Pending
- 2014-02-12 EP EP14703867.3A patent/EP2956558B1/de active Active
- 2014-02-12 AU AU2014218021A patent/AU2014218021B2/en active Active
- 2014-02-12 WO PCT/EP2014/052691 patent/WO2014124951A1/de active Application Filing
- 2014-02-12 KR KR1020157024903A patent/KR102230317B1/ko active IP Right Grant
- 2014-02-12 US US14/767,399 patent/US11001902B2/en active Active
- 2014-02-12 ES ES14703867.3T patent/ES2616043T3/es active Active
- 2014-02-12 BR BR112015019537A patent/BR112015019537A2/pt not_active Application Discontinuation
- 2014-02-12 MX MX2015010584A patent/MX2015010584A/es unknown
- 2014-02-13 AR ARP140100464A patent/AR094785A1/es active IP Right Grant
- 2014-02-13 TW TW103104693A patent/TWI653341B/zh not_active IP Right Cessation
-
2015
- 2015-09-11 ZA ZA2015/06725A patent/ZA201506725B/en unknown
Non-Patent Citations (1)
Title |
---|
See references of WO2014124951A1 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022124892A1 (en) | 2020-12-09 | 2022-06-16 | Stahl International B.V. | Process for deliming of hides, skins or pelts |
NL2027083B1 (en) | 2020-12-09 | 2022-07-07 | Stahl Int B V | Process for deliming of hides, skins or pelts |
Also Published As
Publication number | Publication date |
---|---|
WO2014124951A1 (de) | 2014-08-21 |
US11001902B2 (en) | 2021-05-11 |
NZ710857A (en) | 2020-09-25 |
US20150376726A1 (en) | 2015-12-31 |
KR102230317B1 (ko) | 2021-03-19 |
EP2956558B1 (de) | 2016-11-16 |
TWI653341B (zh) | 2019-03-11 |
EP2607499A2 (de) | 2013-06-26 |
ZA201506725B (en) | 2017-09-27 |
CN104981549A (zh) | 2015-10-14 |
AR094785A1 (es) | 2015-08-26 |
ES2616043T3 (es) | 2017-06-09 |
KR20150119203A (ko) | 2015-10-23 |
EP2607499A3 (de) | 2013-07-10 |
AU2014218021B2 (en) | 2017-03-16 |
MX2015010584A (es) | 2016-05-31 |
AU2014218021A1 (en) | 2015-09-03 |
BR112015019537A2 (pt) | 2017-07-18 |
TW201441374A (zh) | 2014-11-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2956558B1 (de) | Verfahren zur herstellung von leder | |
EP2421995B1 (de) | Verfahren zur gerbung von tierhäuten | |
DE863982C (de) | Verfahren zur Veredelung von ungegerbtem kollagenem Material | |
EP3440227B1 (de) | Zusammensetzung und verfahren zur gerbung basierend auf einem acetal eines aldehydischen gerbstoffes | |
EP1029930B1 (de) | Gerbverfahren | |
DE649047C (de) | Verfahren zur Herstellung von Leder | |
DE1288233B (de) | Verfahren zum Schnellgerben von mittelschweren oder schweren Haeuten | |
DE671712C (de) | Verfahren zum Gerben von Haeuten und Fellen | |
DE1494841C3 (de) | Verfahren zum Schnellgerben von Häuten | |
DE1284028C2 (de) | Verfahren zum schnellgerben von haeuten | |
DE634404C (de) | Verfahren zum Gerben tierischer Haeute und Felle | |
DE641635C (de) | Verfahren zum Gerben von tierischen Bloessen | |
DE1494839C3 (de) | Verfahren zum Schnellgerben von Ledern | |
DE920324C (de) | Verfahren zum Gerben von tierischen Haeuten und Fellen | |
DE687611C (de) | en | |
DE1494829C2 (de) | Verfahren zum Schnellgerben | |
DE504079C (de) | Verfahren zum Behandeln tierischer Haeute | |
DE747248C (de) | Verfahren zum Gerben von tierischen Haeuten und Fellen mit Chromgerbstoffen | |
DE716747C (de) | Verfahren zum Entkaelken von geaescherten Bloessen | |
DE857424C (de) | Verfahren zum Gerben von Haeuten und Fellen mittels Eisenverbindungen | |
CH296343A (de) | Verfahren zum Behandeln von Leder, ungegerbtem Hautmaterial sowie von Faserleder und zur Herstellung von letzterem bestimmtem Fasermaterial. | |
DE1207037B (de) | Verfahren zur Entkaelkung geaescherter Haeute und Felle | |
DE3306374A1 (de) | Verfahren zum gerben von haeuten mit einem hochbasischen chromgerbstoff | |
NZ710857B2 (en) | Method for producing leather | |
DE1000563B (de) | Gerben von Haeuten und Fellen |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20150914 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: C14C 1/08 20060101AFI20160524BHEP Ipc: C14C 9/02 20060101ALI20160524BHEP Ipc: C14C 3/06 20060101ALI20160524BHEP |
|
INTG | Intention to grant announced |
Effective date: 20160620 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D Free format text: LANGUAGE OF EP DOCUMENT: GERMAN |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: REF Ref document number: 846006 Country of ref document: AT Kind code of ref document: T Effective date: 20161215 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 502014001986 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 4 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170216 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170217 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170316 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2616043 Country of ref document: ES Kind code of ref document: T3 Effective date: 20170609 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: EE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 502014001986 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170216 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
26N | No opposition filed |
Effective date: 20170817 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170228 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170212 |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20170228 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 5 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20170212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20140212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MM01 Ref document number: 846006 Country of ref document: AT Kind code of ref document: T Effective date: 20190212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190212 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20200226 Year of fee payment: 7 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20200225 Year of fee payment: 7 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20161116 Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20170316 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20200429 Year of fee payment: 7 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502014001986 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20210212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210901 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210228 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20210212 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 20240307 Year of fee payment: 11 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20240123 Year of fee payment: 11 Ref country code: IT Payment date: 20240222 Year of fee payment: 11 |