US3826610A - Pulverulent mixture for tanning raw animal hides and leather - Google Patents
Pulverulent mixture for tanning raw animal hides and leather Download PDFInfo
- Publication number
- US3826610A US3826610A US00263076A US26307672A US3826610A US 3826610 A US3826610 A US 3826610A US 00263076 A US00263076 A US 00263076A US 26307672 A US26307672 A US 26307672A US 3826610 A US3826610 A US 3826610A
- Authority
- US
- United States
- Prior art keywords
- tanning
- parts
- mixture
- leather
- content
- 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.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title abstract description 46
- 239000010985 leather Substances 0.000 title description 13
- 241001465754 Metazoa Species 0.000 title description 4
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract description 13
- 239000000839 emulsion Substances 0.000 abstract description 12
- 239000000460 chlorine Substances 0.000 abstract description 11
- 239000003795 chemical substances by application Substances 0.000 abstract description 10
- 229910052801 chlorine Inorganic materials 0.000 abstract description 10
- 239000012188 paraffin wax Substances 0.000 abstract description 8
- 150000002191 fatty alcohols Chemical class 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 229930195733 hydrocarbon Natural products 0.000 abstract description 5
- 150000002430 hydrocarbons Chemical class 0.000 abstract description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract 1
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 abstract 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 9
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 8
- 238000005660 chlorination reaction Methods 0.000 description 6
- 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 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 229910000356 chromium(III) sulfate Inorganic materials 0.000 description 5
- 235000015217 chromium(III) sulphate Nutrition 0.000 description 5
- 239000011696 chromium(III) sulphate Substances 0.000 description 5
- 239000003995 emulsifying agent Substances 0.000 description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 3
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical group OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 3
- 238000004043 dyeing Methods 0.000 description 3
- ALSTYHKOOCGGFT-KTKRTIGZSA-N (9Z)-octadecen-1-ol Chemical compound CCCCCCCC\C=C/CCCCCCCCO ALSTYHKOOCGGFT-KTKRTIGZSA-N 0.000 description 2
- IJFYMXHTVPNBRP-UHFFFAOYSA-N 2,3-bis(2-phenylethyl)phenol Chemical compound C=1C=CC=CC=1CCC=1C(O)=CC=CC=1CCC1=CC=CC=C1 IJFYMXHTVPNBRP-UHFFFAOYSA-N 0.000 description 2
- 241000283690 Bos taurus Species 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 125000000129 anionic group Chemical group 0.000 description 2
- 244000309466 calf Species 0.000 description 2
- 239000000975 dye Substances 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 125000006178 methyl benzyl group Chemical group 0.000 description 2
- GLDOVTGHNKAZLK-UHFFFAOYSA-N octadecan-1-ol Chemical compound CCCCCCCCCCCCCCCCCCO GLDOVTGHNKAZLK-UHFFFAOYSA-N 0.000 description 2
- 229940055577 oleyl alcohol Drugs 0.000 description 2
- XMLQWXUVTXCDDL-UHFFFAOYSA-N oleyl alcohol Natural products CCCCCCC=CCCCCCCCCCCO XMLQWXUVTXCDDL-UHFFFAOYSA-N 0.000 description 2
- 235000021110 pickles Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- PGEBXGLGFFYYFX-UHFFFAOYSA-N 2,3-dibenzylphenol Chemical compound C=1C=CC=CC=1CC=1C(O)=CC=CC=1CC1=CC=CC=C1 PGEBXGLGFFYYFX-UHFFFAOYSA-N 0.000 description 1
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 description 1
- CYEJMVLDXAUOPN-UHFFFAOYSA-N 2-dodecylphenol Chemical compound CCCCCCCCCCCCC1=CC=CC=C1O CYEJMVLDXAUOPN-UHFFFAOYSA-N 0.000 description 1
- HMWIHOZPGQRZLR-UHFFFAOYSA-N 2-hexadecylphenol Chemical compound CCCCCCCCCCCCCCCCC1=CC=CC=C1O HMWIHOZPGQRZLR-UHFFFAOYSA-N 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
- 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 1
- IGFHQQFPSIBGKE-UHFFFAOYSA-N Nonylphenol Natural products CCCCCCCCCC1=CC=C(O)C=C1 IGFHQQFPSIBGKE-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 1
- 239000012874 anionic emulsifier Substances 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
- LLEMOWNGBBNAJR-UHFFFAOYSA-N biphenyl-2-ol Chemical group OC1=CC=CC=C1C1=CC=CC=C1 LLEMOWNGBBNAJR-UHFFFAOYSA-N 0.000 description 1
- YXVFYQXJAXKLAK-UHFFFAOYSA-N biphenyl-4-ol Chemical group C1=CC(O)=CC=C1C1=CC=CC=C1 YXVFYQXJAXKLAK-UHFFFAOYSA-N 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 150000008280 chlorinated hydrocarbons Chemical class 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 125000006182 dimethyl benzyl group Chemical group 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 description 1
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- GOQYKNQRPGWPLP-UHFFFAOYSA-N n-heptadecyl alcohol Natural products CCCCCCCCCCCCCCCCCO GOQYKNQRPGWPLP-UHFFFAOYSA-N 0.000 description 1
- SNQQPOLDUKLAAF-UHFFFAOYSA-N nonylphenol Chemical compound CCCCCCCCCC1=CC=CC=C1O SNQQPOLDUKLAAF-UHFFFAOYSA-N 0.000 description 1
- 125000001117 oleyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])/C([H])=C([H])\C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000000286 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
- 238000005554 pickling Methods 0.000 description 1
- 239000011369 resultant mixture Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14C—CHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
- C14C3/00—Tanning; Compositions for tanning
- C14C3/02—Chemical tanning
- C14C3/04—Mineral tanning
- C14C3/06—Mineral tanning using chromium compounds
Definitions
- a pulverulent mixture for tanning hides and leather comprising (a) a chrome tanning agent, (b) a product of the chlorination of paraffin hydrocarbons of about 8-24 carbon atoms and having a chlorine content of about 20- 50% by weight, and (c) an adduct of about 20 to 70 moles of ethylene oxide to one mole of an alkylphenol, arylalkylphenyl or fatty alcohol.
- the mixture dispersesreadily in water to form stable tanning emulsions which yield leathers characterized by softness, smoothness and superior grain characteristics.
- the present invention relates to a new tanning mixture for animal hides and leather, to its production, and to its use.
- Chlorinated parafiins in the form of aqueous emulsions have already been used in chrome tanning.
- the aqueous emulsion of the chlorinated hydrocarbons was first manufactured and was added to the tanning bath separately from the tanning material,
- a further object of the invention is to provide a composition which can readily be formed into a tanning emulsion giving leathers characterized by softness and smoothness.
- a pulverulent mixture for tanning animal hides and leather comprising (a) a chrome tanning agent; (b) a chlorination product of parafiin hydrocarbons of about 8-24 carbon atoms and having a chlorine content of about 20-50% by weight; and (c) an adduct of about 20 to 70 moles of ethylene oxide 'with an alkylphenol, aralkylphenol or fatty alcohol.
- the mixture comprises preferably (a) 100 parts by weight of the chrome tanning agent; (b) 5-25 parts by weight, optionally 10-20 parts by weight of the said chlorination product; and (0) 1-15 parts by weight, optionally 2-5 parts by weight of the said adduct.
- the invention also provides an advantageous method of producing the tanning mixture of the invention comprising mixing the chlorination product and the-adduct to form an intermediate mixture, and then admixing the chrome tanning agent with the said intermediate mixture.
- chrome tanning agents used in the mixtures accordnonylphenol-polyglycol-ether, warmed to 3,826,610 Patented July 30, 1974 'As component (0) of the-mixtures according tothe invention" there may especially be mentioned the adducts of about 20 to moles of ethylene oxide to higher (O -C alkylphenols such'as nonylphenol, dodecylphenoland hexadecylphenol, to aralkylphenols, such as phenol, C -C -alkylphenols, oand p-hydroxydiphenyl substitutedby benzyl, methylbenzyl, dimethylbenzyl, methylbenzyl or p-phenylethyl radicals, e.g.
- di-benzylphenol or the reaction product of o-hydroxydiphenyl with 1-3 moles of styrene or higher (C C2 fatty alcohols, such as lauryl alcohol, stearyl alcohol and oleyl alcohol.
- C C2 fatty alcohols such as lauryl alcohol, stearyl alcohol and oleyl alcohol.
- ethylene oxide say up to about 5% by weight, can be replaced by propylene oxide.
- these adducts function as non-ionic emulsifiers.
- anionic auxiliaries such as paraflinsulfonic acids, especially alkylbenzenesulfonic acids, for example dodecylbenzenesulfonic acid, or their salts
- the ratio of the amounts of anionic auxiliaries to the amounts of non-ionic emulsifiers is appropriately 1:l-10.
- the use of the tanning mixtures according to the invention provides a simplified procedure and results in tanning batches of constant quality being obtained.
- the chrome leathers obtainable by means of' the tanning mixtures according to the invention are distinguished by outstanding properties, especially by very soft handle, excellent smoothness and superior grain characteristics. Furthermore, the chrome leathers manufactures in this way give particularly good evenness during subsequent aniline dyeing. Apart from the tanning, uniform fat liquoring over the entire cross-section of the leather, and optimum distribution of the natural grease of the hides to be tanned is achieved.
- EXAMPLE 1 100 parts of pulverulent chromium-III sulfate (Cr O content: 26%; content: 27%; Na SO content: 23%) are. mixed with 20 parts of sodium bicarbonate. This mixture is subsequently treated with a mixture. of 15 parts of n-chlorinated paraffin (C -C -parafiin; chlorine content 35%) and 3 parts .of an adduct of 30 moles of ethylene oxide to 1 mole of nonylphenoh'produced by stirring the 60 C., into the chlorinated parafiin. e
- the resulting mixture is outstandingly suitable for the manufacture of soft side leather (grained upper leather,
- the parts of the tanning mixture described above are added to the pickle.
- the time in the tanning vat is 8 hours, the initial temperature 20 C. and the final temperature 40 C.
- the leathers are subsequently neutralized, dyed and fat liquored in the usual manner, the amount of grease being .reducedby Theitinished-leatherssare very soft and very supple and can be dyed very evenly with aniline dyes.
- EXAMPLE 2 100 parts of pulverulent chromium-(III) sulfate (Cr O content: 26%; S0 content: 27%;Na SO content: 23%) are treated with a mixture of 14 parts of n-chlorinated .parafiln (C -C -paraffin; chlorine content: 42%) and 6 parts of an adduct of 40 moles of ethylene oxide to 1 mole of di-(phenylethyl)-phenol, which was prepared by stirring the di (phenylethyl)-phenol-polyglycol-ether,
- the resulting mixture is outstandingly suitable for the production of napa side leather.
- EXAMPLE 3 100 parts of pulverulent chromium-(III) sulfate (Cr O content: 26%; S0 content: 27%; Na- SO content: 23%) are mixed with 15 parts of sodium sulfite. This mixture is subsequently treated with a mixture of 12 parts of n- ".chlorinated paraflin ,C C -paraifin; chlorine content: 22%) and 4 parts of an adduct'o'f 20 moles of ethylene oxide to 1 mole of dodecylphenol, which was prepared 1 by stirring the dodecylphenol-polyglycol-ether, warmed to 60 G, into the chlorinated paraffin; 1
- the leathers are further processed into suede in the usual manner, with or without intermediate drying before dyeing.
- the resulting leathers are distinguished by a very uniform color and a velvety sheen.
- EXAMPLE 4 parts of pulverulent chromium-(III) sulfate'-(Cr O content: 26%; S0 content: 27%; Na SO content: 23%) are mixed with 15 parts of sodium carbonate in 20 parts of sodium forfnate.
- This mixture is subsequently treated with a mixture of 16 parts of n-chlorinated paraffin (C -C -paratfin; chlorine content: 40%) and 4 parts of an adduct of 60 moles of ethylene oxide to one mole of di-(phenylethyl)-phenol, which was prepared by stirring the di-(phenylethyl)-phenol-polyglycol-ether, warmed to 60 G, into the chlorinated parafiin.
- C -C -paratfin n-chlorinated paraffin
- the resulting mixture is outstandingly suitable for the re-tanning of napa leather.
- 100 parts of side leather which has been chrome-tanned and shaved in the conventional manner are re-tanned in 100 parts of water with 8 parts of the tanning mixture described above, for 1 hour at 40 C. ina tanning vat.
- the leathers are further processed in the usual manner for napa side leather.
- the resulting leathers are very soft and very supple and are dyed very uniformly by aniline dyes.
- a pulverulent mixture for tanning raw hides and leather comprising by weight (a) about 100 parts of a chrome tanning agent; (b) about 5 to'25 parts of a chlorination product of paraffin hydrocarbons of 8-24 carbon atoms and having a chlorine content of about 20-50% by weight; and (0) about 1,to 15 parts of an adduct of about 20-70 moles of ethylene oxide to one mole of an alkylphenol, aralkylphenol or fatty alcohol.
- the improvement which comprises adding said tanning agent to said bath in the form of a pulverulent mixture comprising (a) a chrome tanning agent; (b) a product of the chlorination of paraffin hydrocarbons of 824 carbon atoms and having a chlorine content of about 20-50% by weight, and v(c) an adduct of about 20-70 moles of ethylene oxide with an alkylphenol, aralkylphenol or fatty alcohol, the components (a), (b)) and (c) being employed in a weight ratio of about 10025-25 :1-15.
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2134070A DE2134070C3 (de) | 1971-07-08 | 1971-07-08 | Pulverförmige Mischungen zum Gerben von tierischen Häuten oder Nachgerben von Leder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3826610A true US3826610A (en) | 1974-07-30 |
Family
ID=5813077
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US00263076A Expired - Lifetime US3826610A (en) | 1971-07-08 | 1972-06-15 | Pulverulent mixture for tanning raw animal hides and leather |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US3826610A (de) |
| BR (1) | BR7204465D0 (de) |
| DE (1) | DE2134070C3 (de) |
| ES (1) | ES404642A1 (de) |
| FR (1) | FR2145338A5 (de) |
| GB (1) | GB1363342A (de) |
| IT (1) | IT960956B (de) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3957426A (en) * | 1973-03-08 | 1976-05-18 | Henkel & Cie G.M.B.H. | Fatty acid ester mixtures liquid at low temperatures and process |
| US3960481A (en) * | 1972-09-27 | 1976-06-01 | Thermanil Chemical Company, Incorporated | Process for tanning leather |
| US3966402A (en) * | 1973-07-07 | 1976-06-29 | Basf Aktiengesellschaft | Process for the manufacture of basic chrome tanning agents soluble in coldwater |
| US4208184A (en) * | 1970-08-21 | 1980-06-17 | Chemische Fabrik Stockhausen & Cie | Dried pulverulent products |
| US4502859A (en) * | 1983-04-11 | 1985-03-05 | Rockmont Industries, Inc. | Hide tanning composition and method of preparing same |
| US4744794A (en) * | 1984-05-24 | 1988-05-17 | Henkel Kommanditgesellschaft Auf Aktien | Leather fatliquoring agents combinable with tanning and retanning compositions |
| WO2015104716A1 (en) * | 2014-01-13 | 2015-07-16 | Council Of Scientific & Industrial Research | A composition for water free, pickle free chrome tanning of hides/skins |
| US9695064B2 (en) | 2012-04-20 | 2017-07-04 | Fluid Equipment Development Company, Llc | Reverse osmosis system with energy recovery devices |
-
1971
- 1971-07-08 DE DE2134070A patent/DE2134070C3/de not_active Expired
-
1972
- 1972-06-15 US US00263076A patent/US3826610A/en not_active Expired - Lifetime
- 1972-07-06 BR BR4465/72A patent/BR7204465D0/pt unknown
- 1972-07-06 IT IT51359/72A patent/IT960956B/it active
- 1972-07-07 FR FR7224795A patent/FR2145338A5/fr not_active Expired
- 1972-07-07 GB GB3188972A patent/GB1363342A/en not_active Expired
- 1972-07-07 ES ES404642A patent/ES404642A1/es not_active Expired
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4208184A (en) * | 1970-08-21 | 1980-06-17 | Chemische Fabrik Stockhausen & Cie | Dried pulverulent products |
| US3960481A (en) * | 1972-09-27 | 1976-06-01 | Thermanil Chemical Company, Incorporated | Process for tanning leather |
| US3957426A (en) * | 1973-03-08 | 1976-05-18 | Henkel & Cie G.M.B.H. | Fatty acid ester mixtures liquid at low temperatures and process |
| US3966402A (en) * | 1973-07-07 | 1976-06-29 | Basf Aktiengesellschaft | Process for the manufacture of basic chrome tanning agents soluble in coldwater |
| US4502859A (en) * | 1983-04-11 | 1985-03-05 | Rockmont Industries, Inc. | Hide tanning composition and method of preparing same |
| US4744794A (en) * | 1984-05-24 | 1988-05-17 | Henkel Kommanditgesellschaft Auf Aktien | Leather fatliquoring agents combinable with tanning and retanning compositions |
| US9695064B2 (en) | 2012-04-20 | 2017-07-04 | Fluid Equipment Development Company, Llc | Reverse osmosis system with energy recovery devices |
| WO2015104716A1 (en) * | 2014-01-13 | 2015-07-16 | Council Of Scientific & Industrial Research | A composition for water free, pickle free chrome tanning of hides/skins |
| CN106414777A (zh) * | 2014-01-13 | 2017-02-15 | 科学与工业研究委员会 | 用于无水、无腌渍铬鞣毛皮/皮的组合物 |
| CN106414777B (zh) * | 2014-01-13 | 2018-04-10 | 科学与工业研究委员会 | 用于无水、无腌渍铬鞣毛皮/皮的组合物 |
Also Published As
| Publication number | Publication date |
|---|---|
| GB1363342A (en) | 1974-08-14 |
| DE2134070C3 (de) | 1975-09-25 |
| IT960956B (it) | 1973-11-30 |
| DE2134070B2 (de) | 1975-02-13 |
| BR7204465D0 (pt) | 1973-05-24 |
| DE2134070A1 (de) | 1973-01-25 |
| FR2145338A5 (de) | 1973-02-16 |
| ES404642A1 (es) | 1975-06-16 |
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