GB922271A - Improvements in or relating to the dehairing of hides and skins - Google Patents

Improvements in or relating to the dehairing of hides and skins

Info

Publication number
GB922271A
GB922271A GB2200260A GB2200260A GB922271A GB 922271 A GB922271 A GB 922271A GB 2200260 A GB2200260 A GB 2200260A GB 2200260 A GB2200260 A GB 2200260A GB 922271 A GB922271 A GB 922271A
Authority
GB
United Kingdom
Prior art keywords
added
skins
hides
sulphur
dehaired
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
Application number
GB2200260A
Inventor
Otto Grimm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Roehm and Haas GmbH
Original Assignee
Roehm and Haas GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Roehm and Haas GmbH filed Critical Roehm and Haas GmbH
Priority to GB2200260A priority Critical patent/GB922271A/en
Publication of GB922271A publication Critical patent/GB922271A/en
Expired legal-status Critical Current

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

Abstract

922,271. Dehairing hides and skins. ROHM & HAAS G.m.b.H. June 23, 1960, No. 22002/60. Class 76. Hides and skins are dehaired by successive treatment with water and pulverulent or pasty proteolytic enzyme products and then with sulphur-containing compounds having a reducing action. The enzyme may be proteases formed by micro-organisms and bacteria, or pancreatic tryptase, and #-glucosidase may also be added. The sulphur compounds may be sulphites, bisulphites, thiosulphates, dithionites, and thioglycollates, of which the sodium salts are preferred; or sodium sulphide or sodium hydrosulphide. They are preferably used in the presence of 30-50% of water. When a painting process is used a thickening agent such as kaolin may also be added. Cationic or non-ionic wetting agents such as ethylene oxide condensation products having 6-16 oxide units may be added to the enzymes, and non-ionic or anionic wetting agents may be added to the sulphur compounds. In examples, goat, kid and calf skins and cow hides are dehaired and in some of the solutions ammonium sulphate is also added. Specification 776,323 is referred to.
GB2200260A 1960-06-23 1960-06-23 Improvements in or relating to the dehairing of hides and skins Expired GB922271A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2200260A GB922271A (en) 1960-06-23 1960-06-23 Improvements in or relating to the dehairing of hides and skins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2200260A GB922271A (en) 1960-06-23 1960-06-23 Improvements in or relating to the dehairing of hides and skins

Publications (1)

Publication Number Publication Date
GB922271A true GB922271A (en) 1963-03-27

Family

ID=10172364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2200260A Expired GB922271A (en) 1960-06-23 1960-06-23 Improvements in or relating to the dehairing of hides and skins

Country Status (1)

Country Link
GB (1) GB922271A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457324A1 (en) * 1979-05-22 1980-12-19 Union Chimique Indle Sarl Depilating hides before tanning - using non polluting bath contg. sulphur reducing salt and lipotropic agent
FR2501717A1 (en) * 1981-03-12 1982-09-17 Boer Mueboer Cipoeipari Kut METHOD OF PROTECTING THE ENVIRONMENT FOR LIMITING RAW SKINS
EP0326059A2 (en) * 1988-01-29 1989-08-02 Röhm GmbH Liming process for obtaining hair
CN102952907A (en) * 2011-08-26 2013-03-06 约泰实业股份有限公司 Method for depilating animal skin

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2457324A1 (en) * 1979-05-22 1980-12-19 Union Chimique Indle Sarl Depilating hides before tanning - using non polluting bath contg. sulphur reducing salt and lipotropic agent
FR2501717A1 (en) * 1981-03-12 1982-09-17 Boer Mueboer Cipoeipari Kut METHOD OF PROTECTING THE ENVIRONMENT FOR LIMITING RAW SKINS
EP0326059A2 (en) * 1988-01-29 1989-08-02 Röhm GmbH Liming process for obtaining hair
EP0326059A3 (en) * 1988-01-29 1991-03-27 Röhm GmbH Liming process for obtaining hair
CN102952907A (en) * 2011-08-26 2013-03-06 约泰实业股份有限公司 Method for depilating animal skin
CN102952907B (en) * 2011-08-26 2015-05-13 约泰实业股份有限公司 Method for depilating animal skin

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