GB523578A - Improvements in or relating to the treatment of hides for tanning - Google Patents
Improvements in or relating to the treatment of hides for tanningInfo
- Publication number
- GB523578A GB523578A GB539/39A GB53939A GB523578A GB 523578 A GB523578 A GB 523578A GB 539/39 A GB539/39 A GB 539/39A GB 53939 A GB53939 A GB 53939A GB 523578 A GB523578 A GB 523578A
- Authority
- GB
- United Kingdom
- Prior art keywords
- deliming
- hides
- acid
- tanning
- relating
- 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
Links
- IIACRCGMVDHOTQ-UHFFFAOYSA-N sulfamic acid Chemical compound NS(O)(=O)=O IIACRCGMVDHOTQ-UHFFFAOYSA-N 0.000 abstract 3
- GEHMBYLTCISYNY-UHFFFAOYSA-N Ammonium sulfamate Chemical compound [NH4+].NS([O-])(=O)=O GEHMBYLTCISYNY-UHFFFAOYSA-N 0.000 abstract 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 abstract 2
- 238000005554 pickling Methods 0.000 abstract 2
- 239000002253 acid Substances 0.000 abstract 1
- 159000000007 calcium salts Chemical class 0.000 abstract 1
- 239000010985 leather Substances 0.000 abstract 1
- 230000008961 swelling Effects 0.000 abstract 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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment And Processing Of Natural Fur Or Leather (AREA)
Abstract
523,578. Making leather. DU PONT DE NEMOURS & CO., E. I. Jan. 6, 1939, No. 539, Convention date, Feb. 1, 1938. [Class 76] Hides are delimed and pickled with a solution of sulphamic acid or ammonium sulphamate. The sulphamic acid produces a soluble calcium salt and causes less swelling than, e.g., hydrochloric acid. When used for both pickling and liming the concentration of acid is higher than when used for deliming only. When ammonium sulphamate is used for deliming sulphamic acid is added after completion of the deliming. The hides may be washed between the deliming and pickling steps.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US188055A US2150961A (en) | 1938-02-01 | 1938-02-01 | Tanning |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB523578A true GB523578A (en) | 1940-07-17 |
Family
ID=22691614
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB539/39A Expired GB523578A (en) | 1938-02-01 | 1939-01-06 | Improvements in or relating to the treatment of hides for tanning |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2150961A (en) |
| GB (1) | GB523578A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2769787A (en) * | 1954-06-04 | 1956-11-06 | Morton Salt Co | Method for regeneration of cation exchangers |
| DE1207037B (en) * | 1960-11-12 | 1965-12-16 | Hoechst Ag | Process for liming ashed hides and pelts |
| US9061275B2 (en) | 2013-03-14 | 2015-06-23 | Steag Energy Services Gmbh | Methods of removing calcium material from a substrate or catalytic converter |
-
1938
- 1938-02-01 US US188055A patent/US2150961A/en not_active Expired - Lifetime
-
1939
- 1939-01-06 GB GB539/39A patent/GB523578A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2150961A (en) | 1939-03-21 |
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