US2139209A - Method for producing dehaired hides with the aid of mold tryptases in alkaline solution - Google Patents
Method for producing dehaired hides with the aid of mold tryptases in alkaline solution Download PDFInfo
- Publication number
- US2139209A US2139209A US104147A US10414736A US2139209A US 2139209 A US2139209 A US 2139209A US 104147 A US104147 A US 104147A US 10414736 A US10414736 A US 10414736A US 2139209 A US2139209 A US 2139209A
- Authority
- US
- United States
- Prior art keywords
- mold
- hides
- sodium
- alkaline
- tryptase
- 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
- 102000001400 Tryptase Human genes 0.000 title description 18
- 108060005989 Tryptase Proteins 0.000 title description 18
- 239000012670 alkaline solution Substances 0.000 title description 5
- 238000004519 manufacturing process Methods 0.000 title 1
- 239000000243 solution Substances 0.000 description 13
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 12
- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 8
- 235000010267 sodium hydrogen sulphite Nutrition 0.000 description 8
- 239000004289 sodium hydrogen sulphite Substances 0.000 description 8
- 239000003513 alkali Substances 0.000 description 7
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 6
- 206010042674 Swelling Diseases 0.000 description 6
- 235000010265 sodium sulphite Nutrition 0.000 description 6
- 230000008961 swelling Effects 0.000 description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 4
- 150000003863 ammonium salts Chemical class 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 4
- 235000011121 sodium hydroxide Nutrition 0.000 description 4
- 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 3
- 235000019687 Lamb Nutrition 0.000 description 3
- 239000004133 Sodium thiosulphate Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 3
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 3
- 239000001166 ammonium sulphate Substances 0.000 description 3
- 235000011130 ammonium sulphate Nutrition 0.000 description 3
- 210000004209 hair Anatomy 0.000 description 3
- 230000007935 neutral effect Effects 0.000 description 3
- 239000011734 sodium Substances 0.000 description 3
- 229910052708 sodium Inorganic materials 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 3
- 235000019345 sodium thiosulphate Nutrition 0.000 description 3
- 210000002268 wool Anatomy 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 2
- 108090000790 Enzymes Proteins 0.000 description 2
- 239000001099 ammonium carbonate Substances 0.000 description 2
- 235000012501 ammonium carbonate Nutrition 0.000 description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 description 2
- 241000228212 Aspergillus Species 0.000 description 1
- 241000283707 Capra Species 0.000 description 1
- 241001494479 Pecora Species 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- -1 ammonium sulphate Chemical class 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000002951 depilatory effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000008234 soft water Substances 0.000 description 1
- 239000000126 substance Substances 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
- C14C1/06—Facilitating unhairing, e.g. by painting, by liming
- C14C1/065—Enzymatic unhairing
Definitions
- the procedure may be such that the hides are pretreated as in my prior application,
- alkaline reacting salts such as sodium bicarbonate or soda.
- the mold tryptase be made to act on the hide with a relatively small amount of water.
- the alkali swelled hides may be kneaded in a vat for one hour with the requisite amount of mold tryptase and the necessary addition agents while using 60 liters of water for each 100 kgs. weight of soft hide, or the alkali
- the procedure is ef- 5 fected with mold tryptase and sodium sulphite in such alkaline or ammoniacal reaction that no swelling occurs.
- the alkaline or ammoniacal treatment may also be separate from the treatment with mold tryptase inasmuch as it may pre- 10 cede or follow the same.
- a preferred method is one wherein the hides or skins are coated with a solution of mold tryptase, sodium sulphite and ammonium sulphate and after being stored for one day and subsequently treated with a .5-1.5% 15,
- ammonium salts or ammonia is suitable for preventing the occurrence of decay phenomena during the subsequent treatment with soda solution.
- hair and wool are particularly saved from damage.
- Mold tryptase F k 1 Sodium bisulphife 1 1 ka- 1 Water s" 35 and are kneaded for one hour in a vat. Next morning they may be depilated free from basic hair. The dehaired hides are then worked up further without subsequent bating.
- the hides After being allowed to lie for 24 hours the hides arelmmersed for 1-2 days in a solution of Water liters 40o Calcined soda kgs 5 After depilating, the dehaired hides are worked ,up as usual, that is, are defieshed, washed out,
- the bating procedure may be prolonged over night. The next morning the dehaired hides are worked up as usual, i. e. defleshed, smoothed, rinsed and finished.
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 |
|---|---|---|---|
| DE2139209X | 1935-10-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US2139209A true US2139209A (en) | 1938-12-06 |
Family
ID=7986801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US104147A Expired - Lifetime US2139209A (en) | 1935-10-19 | 1936-10-05 | Method for producing dehaired hides with the aid of mold tryptases in alkaline solution |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2139209A (instruction) |
| BE (1) | BE412988A (instruction) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100192400A1 (en) * | 1999-03-08 | 2010-08-05 | Storrer Ernest J | Moisture removal system |
-
1935
- 1935-12-26 BE BE412988A patent/BE412988A/fr unknown
-
1936
- 1936-10-05 US US104147A patent/US2139209A/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100192400A1 (en) * | 1999-03-08 | 2010-08-05 | Storrer Ernest J | Moisture removal system |
Also Published As
| Publication number | Publication date |
|---|---|
| BE412988A (instruction) | 1936-02-29 |
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