US2111800A - Process of tanning - Google Patents
Process of tanning Download PDFInfo
- Publication number
- US2111800A US2111800A US732624A US73262434A US2111800A US 2111800 A US2111800 A US 2111800A US 732624 A US732624 A US 732624A US 73262434 A US73262434 A US 73262434A US 2111800 A US2111800 A US 2111800A
- Authority
- US
- United States
- Prior art keywords
- leather
- tanning
- acidity
- magnesium carbonate
- solution
- 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
- 238000000034 method Methods 0.000 title description 14
- 239000010985 leather Substances 0.000 description 18
- 239000002253 acid Substances 0.000 description 11
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 description 8
- 239000001095 magnesium carbonate Substances 0.000 description 8
- 229910000021 magnesium carbonate Inorganic materials 0.000 description 8
- CSNNHWWHGAXBCP-UHFFFAOYSA-L Magnesium sulfate Chemical class [Mg+2].[O-][S+2]([O-])([O-])[O-] CSNNHWWHGAXBCP-UHFFFAOYSA-L 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 150000007513 acids Chemical class 0.000 description 4
- 235000013311 vegetables Nutrition 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 3
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910021653 sulphate ion Inorganic materials 0.000 description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- AYJRCSIUFZENHW-UHFFFAOYSA-L barium carbonate Chemical compound [Ba+2].[O-]C([O-])=O AYJRCSIUFZENHW-UHFFFAOYSA-L 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 235000019341 magnesium sulphate Nutrition 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 235000017550 sodium carbonate Nutrition 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 239000005995 Aluminium silicate Substances 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
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004061 bleaching Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 229910021538 borax Inorganic materials 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 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
- 235000013379 molasses Nutrition 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004328 sodium tetraborate Substances 0.000 description 1
- 235000010339 sodium tetraborate 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
- C14C3/08—Chemical tanning by organic agents
- C14C3/10—Vegetable tanning
Definitions
- This invention relates to the treatment of hides leather Without destroying the beneficial effect and leather. It isan object of this invention to of the other ingredients. produce a leather with an improved quality and Another typical method is to use a desired durability. It is a further object to provide a amount of magnesium carbonate in the oil wheel 5 process which will control the acid content of during the process of adding oil, sugar or Epsom the leather and thereby increase its length of salts to the leather. life and serviceability. It is a further object to In any case the amount of magnesium carproduce a leather which will be of a uniform bonate to be added to the solutions will depend quality with a minimum of expense and difficulty.
- the process of tanning which comprises 40 they produce an acidity in the finished leather treating the hides with a vegetable tanning solumay be substantially neutralized by the use of tion and subsequently neutralizing the acidity magnesium carbonate in solution either in. the with magnesium carbonate. presence of the tanning materials or after the 2.
- the process of tanning which comprises last acid bath without in any manner destroytreating the hides with magnesium carbonate in 45 ing or counteracting the essential purposes of the conjunction with vegetable acid materials to contanning acids in the formation of the leather. trol the acidity of the finished hide.
- a typical method oi'using it will be to make up 3.
- the process of treating leather which cona mixture of the following approximate proporsists in subjecting vegetable tanned hides to the tions, 50% powdered tanning or filling extract, action of magnesium carbonate in solution. to 50 l 8% oxalic acid, 1% borax, 10% Glauber salts, limit the final acidity. 8% magnesium carbonate, 5% kaolin, 1% sodium 4.
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)
Description
Patented Mar. 22, 1938 2,111,800
u rs srAss PAT PROCESS OF. TANNING Theodore F. Oberlander, Elkland, Pa.
No Drawing. Application June 2'7, 1934, Serial No. 732,624
4 Claims. (01. 149-5) This invention relates to the treatment of hides leather Without destroying the beneficial effect and leather. It isan object of this invention to of the other ingredients. produce a leather with an improved quality and Another typical method is to use a desired durability. It is a further object to provide a amount of magnesium carbonate in the oil wheel 5 process which will control the acid content of during the process of adding oil, sugar or Epsom the leather and thereby increase its length of salts to the leather. life and serviceability. It is a further object to In any case the amount of magnesium carproduce a leather which will be of a uniform bonate to be added to the solutions will depend quality with a minimum of expense and difficulty. on the solution used and the character of the It is a further object to devise a process for the leather to be treated and produced, and the most 10 production of leather which will be simple to opdesirable proportion can most readily be detererate and which will be effective and reliable in mined by the results. its results. 7 Leather made in accordance with this process In the treatment of leather the raw hide, after may be kept with a substantially uniform conthe hair and flesh are removed, is treated with a tent, for example, between 0.3% and 0.7% of 5 tanning solution to convert the hide into leather. acidity. It may then be washed and bleached either by the The use of other carbonates than magnesium use of soda ash or other bleaching agent, therecarbonate is not so effective, some of such after it may be tumbled in a. drum with a filler carbonates for example as sodium carbonate solution, molasses, Epsom salts or the like. The when used in appreciable quantity tends. to pre- 20 leather may then, if desired, be again soaked vent the functioning of the tanning process and in a cellulose sulphate or tanning material and other carbonates such as barium carbonate are again treated with fillers, sugar, Epsom salts and. too inert to be of value. oil. For many purposes this second step may Since certain changes may be made in the be omitted. After the leather is treated it may above construction and difierent embodiments of' be conditioned so that it may be compressed by the invention could be made without departing a. press or rolling machine and it may be further from the scope thereof, it is intended that all bleached if desired by dip-ping in a sponge or dipmatter contained in the above description shall FFHQE ping compound. be interpreted as illustrative and not in a limit- The finished leather produced by the above ing sense. 30 process has a serious drawback in that it is apt It is also to be understood that the following to have an unduly high acid content which makes claims are intended to cover all of the, generic it unsuitable for many purposes and which is deand specific features of the invention herein de-' structive of its durability. This acidity may be scribed, and all statements of the scope of the in due to the acids of the tanning solution or it vention which, as a matter of language, might 35 may be due to the acids used in bleaching and be said to fall between said claims. it may run as high as two percent of free mineral Having described my invention, what I claim acid. I as new and desire to secure by Letters Patent In accordance with this invention it has been is:
40 found that the effect of these acids insofar as 1. The process of tanning which comprises 40 they produce an acidity in the finished leather treating the hides with a vegetable tanning solumay be substantially neutralized by the use of tion and subsequently neutralizing the acidity magnesium carbonate in solution either in. the with magnesium carbonate. presence of the tanning materials or after the 2. The process of tanning which comprises last acid bath without in any manner destroytreating the hides with magnesium carbonate in 45 ing or counteracting the essential purposes of the conjunction with vegetable acid materials to contanning acids in the formation of the leather. trol the acidity of the finished hide.
A typical method oi'using it will be to make up 3. The process of treating leather which cona mixture of the following approximate proporsists in subjecting vegetable tanned hides to the tions, 50% powdered tanning or filling extract, action of magnesium carbonate in solution. to 50 l 8% oxalic acid, 1% borax, 10% Glauber salts, limit the final acidity. 8% magnesium carbonate, 5% kaolin, 1% sodium 4. 'Ihe process of treating leather which conacid sulphate or potassium acid sulphate and sists in subjecting it to a vegetable acid tanning 17% sodium chloride. solution in the presence of magnesium carbonate. 5 When used in this manner the magnesium carbonate serves to control the acidity in the finished I T. F. OBERLANDER.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US732624A US2111800A (en) | 1934-06-27 | 1934-06-27 | Process of tanning |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US732624A US2111800A (en) | 1934-06-27 | 1934-06-27 | Process of tanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2111800A true US2111800A (en) | 1938-03-22 |
Family
ID=24944322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US732624A Expired - Lifetime US2111800A (en) | 1934-06-27 | 1934-06-27 | Process of tanning |
Country Status (1)
| Country | Link |
|---|---|
| US (1) | US2111800A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014191862A1 (en) * | 2013-05-27 | 2014-12-04 | Martin Charles Peter | Reduced salt preservation process for skins and hides |
-
1934
- 1934-06-27 US US732624A patent/US2111800A/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014191862A1 (en) * | 2013-05-27 | 2014-12-04 | Martin Charles Peter | Reduced salt preservation process for skins and hides |
| AU2014272742B2 (en) * | 2013-05-27 | 2016-06-09 | Charles Peter MARTIN | Reduced salt preservation process for skins and hides |
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