GB1047813A - Method of dehairing hides or skins - Google Patents
Method of dehairing hides or skinsInfo
- Publication number
- GB1047813A GB1047813A GB1428864A GB1428864A GB1047813A GB 1047813 A GB1047813 A GB 1047813A GB 1428864 A GB1428864 A GB 1428864A GB 1428864 A GB1428864 A GB 1428864A GB 1047813 A GB1047813 A GB 1047813A
- Authority
- GB
- United Kingdom
- Prior art keywords
- solution
- skins
- hides
- tanned
- soaked
- 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
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
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Enzymes And Modification Thereof (AREA)
Abstract
In depilating fleshed hides or skins before they are pickled, chrome-tanned, re-tanned and fat-liquored, they are soaked for 10 to 50 hours, e.g. in an intermittently rotating drum, in an aqueous alkaline solution having an initial pH between 10 and 12 and a temperature between 15 and 40 DEG C. The weight ratio of hides or skins to solution is between 1:50 and 1:4. The solution contains sufficient proteolytic enzyme, e.g. derived from the treatment of keratinaceous material with Streptomyces fradiae I.M. strain No. 3739, to provide a keratinase activity between 119,000 and 476,000 keratinase units per pound of hides or skins. The solution may be a solution of calcium hydroxide containing between 0.5 and 2.0%, preferably between 1.0 and 1.5%, of calcium hydroxide, and between 2 and 25%, preferably between 3.0 and 5.0%, of water, based on the soaked weight of the hides or skins. The solution may contain also 3.0% of borax and 0.2% of a bactericide. The hides or skins are then removed from the solution and hair is removed mechanically, as by scudding with a beam knife. An aqueous solution of sodium chloride, calcium formate and sulphuric acid may be used in the subsequent pickling.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27521663A | 1963-04-24 | 1963-04-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1047813A true GB1047813A (en) | 1966-11-09 |
Family
ID=23051345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1428864A Expired GB1047813A (en) | 1963-04-24 | 1964-04-07 | Method of dehairing hides or skins |
Country Status (4)
| Country | Link |
|---|---|
| BE (1) | BE647059A (en) |
| DK (1) | DK108175C (en) |
| GB (1) | GB1047813A (en) |
| NL (1) | NL6404417A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2174986A1 (en) * | 1972-03-06 | 1973-10-19 | Viskase Ltd | |
| CN105018382A (en) * | 2015-07-27 | 2015-11-04 | 湖南省微生物研究院 | Keratinase-producing streptomyces rutgersensis LT-2 and application method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3224881A1 (en) * | 1982-07-03 | 1984-03-01 | Röhm GmbH, 6100 Darmstadt | METHOD FOR THE PRODUCTION OF HAIRY, STORAGE SKIN MATERIAL |
-
1964
- 1964-04-07 GB GB1428864A patent/GB1047813A/en not_active Expired
- 1964-04-22 NL NL6404417A patent/NL6404417A/xx unknown
- 1964-04-23 DK DK204064A patent/DK108175C/en active
- 1964-04-24 BE BE647059D patent/BE647059A/xx unknown
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2174986A1 (en) * | 1972-03-06 | 1973-10-19 | Viskase Ltd | |
| CN105018382A (en) * | 2015-07-27 | 2015-11-04 | 湖南省微生物研究院 | Keratinase-producing streptomyces rutgersensis LT-2 and application method thereof |
| CN105018382B (en) * | 2015-07-27 | 2018-04-03 | 湖南省微生物研究院 | The Lu Te of one plant of production keratinase is situated between this streptomycete LT 2 and its application process |
Also Published As
| Publication number | Publication date |
|---|---|
| NL6404417A (en) | 1964-10-26 |
| BE647059A (en) | 1964-10-26 |
| DK108175C (en) | 1967-10-02 |
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