EP0326059A3 - Liming process for obtaining hair - Google Patents

Liming process for obtaining hair Download PDF

Info

Publication number
EP0326059A3
EP0326059A3 EP19890101120 EP89101120A EP0326059A3 EP 0326059 A3 EP0326059 A3 EP 0326059A3 EP 19890101120 EP19890101120 EP 19890101120 EP 89101120 A EP89101120 A EP 89101120A EP 0326059 A3 EP0326059 A3 EP 0326059A3
Authority
EP
European Patent Office
Prior art keywords
hides
skins
liquor
hair
liming
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.)
Granted
Application number
EP19890101120
Other languages
German (de)
French (fr)
Other versions
EP0326059B1 (en
EP0326059A2 (en
Inventor
Jürgen Dr. Christner
Ernst Pfleiderer
Tilman Dr. Taeger
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 GmbH Darmstadt
Original Assignee
Roehm GmbH Darmstadt
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 GmbH Darmstadt filed Critical Roehm GmbH Darmstadt
Publication of EP0326059A2 publication Critical patent/EP0326059A2/en
Publication of EP0326059A3 publication Critical patent/EP0326059A3/en
Application granted granted Critical
Publication of EP0326059B1 publication Critical patent/EP0326059B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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

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)
  • Cosmetics (AREA)
  • Medicines Containing Material From Animals Or Micro-Organisms (AREA)
  • Enzymes And Modification Thereof (AREA)

Abstract

The invention relates to a process for liming hides and skins with hair preservation and hair removal, wherein a) the skins and hides are treated for 4-48 hours in a soak comprising an aqueous liquor of pH 7-10.5 and containing at least one surfactant, then b) the soaked skins and hides are treated in an incubation step with an aqueous liquor containing an unhairing agent which is based on reductive organic sulphur compounds and is essentially free of inorganic sulphide and on hydrotropes, for 30 to 180, preferably 45 to 90, minutes, at pH 9-11, and then c) in an immunisation phase the skins and hides are subjected for 1 to 12 hours to the action, with agitation, of the liquor which has been adjusted to pH 10-14 by the addition of bases, and then d) in a hair loosening step the skins and hides are subjected for 30-180 minutes to the action, at pH 10-14, of the liquor to which inorganic sulphide has been added in amounts corresponding to 0.5 to 3% by weight, based on the salt or fresh weight of the skins and hides, and e) hair and hide are separated from one another and f) in a liming step the pelts thus obtained are thoroughly limed in the presence of water, alkali and liming aids in the lime wheel, with the proviso that the liquor at each stage amounts to 50-500% by weight of the hide or skin material used.
EP89101120A 1988-01-29 1989-01-23 Liming process for obtaining hair Expired - Lifetime EP0326059B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3802640 1988-01-29
DE3802640A DE3802640A1 (en) 1988-01-29 1988-01-29 HAIR-RESERVED AASIS PROCEDURE

Publications (3)

Publication Number Publication Date
EP0326059A2 EP0326059A2 (en) 1989-08-02
EP0326059A3 true EP0326059A3 (en) 1991-03-27
EP0326059B1 EP0326059B1 (en) 1994-09-28

Family

ID=6346234

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101120A Expired - Lifetime EP0326059B1 (en) 1988-01-29 1989-01-23 Liming process for obtaining hair

Country Status (6)

Country Link
US (1) US4960428A (en)
EP (1) EP0326059B1 (en)
AT (1) ATE112322T1 (en)
BR (1) BR8900352A (en)
DE (2) DE3802640A1 (en)
ES (1) ES2061743T3 (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5525509A (en) * 1991-03-26 1996-06-11 Rohm Gmbh Method for the enzymatic liming of skins and hides
PT101031B (en) * 1991-11-05 2002-07-31 Transkaryotic Therapies Inc PROCESS FOR THE SUPPLY OF PROTEINS BY GENETIC THERAPY
US6063630A (en) * 1991-11-05 2000-05-16 Transkaryotic Therapies, Inc. Targeted introduction of DNA into primary or secondary cells and their use for gene therapy
DE4220838A1 (en) * 1992-06-25 1994-01-05 Roehm Gmbh Process for the ashing of hides and skins
DK113692D0 (en) * 1992-09-16 1992-09-16 Novo Nordisk As
US5435808A (en) * 1993-09-03 1995-07-25 Birko Corporation Hide raceway treatment and improved method of curing hides
DE4332785A1 (en) * 1993-09-27 1995-03-30 Roehm Gmbh Improved enzyme-assisted liming process
WO1996019590A1 (en) * 1994-12-21 1996-06-27 Novo Nordisk A/S Method for dehairing of hides or skins by means of enzymes
RU2174151C1 (en) * 2001-02-08 2001-09-27 Государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности Rawstock liming-depilation process
RU2174150C1 (en) * 2001-02-08 2001-09-27 Государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности Rawstock treatment process
RU2198932C1 (en) * 2002-04-26 2003-02-20 Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности Rawstock unhairing method
RU2206620C1 (en) * 2002-07-25 2003-06-20 Зурабян Карапет Мхитарович Corium of genuine leather and fur semifinished product and methods for manufacture thereof
US6708531B1 (en) * 2002-10-30 2004-03-23 Council Of Scientific And Industrial Research Ecofriendly bio-process for leather processing
US7013838B2 (en) * 2002-12-20 2006-03-21 Frank Jay Hague Bleached expanded pigskin and products
RU2225451C1 (en) * 2003-03-31 2004-03-10 ФГУП "Центральный научно-исследовательский институт кожевенно-обувной промышленности" Method of manufacturing natural pile leather
RU2222601C1 (en) * 2003-04-28 2004-01-27 Московский государственный университет дизайна и технологии Rawstock treatment method
RU2233337C1 (en) * 2003-09-29 2004-07-27 Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности Method of treating raw hide
RU2233336C1 (en) * 2003-09-29 2004-07-27 Федеральное государственное унитарное предприятие Центральный научно-исследовательский институт кожевенно-обувной промышленности Method of soaking raw hide
US6957554B2 (en) * 2003-11-18 2005-10-25 Council Of Scientific And Industrial Research Dehairing and fiber opening process for complete elimination of lime and sodium sulfide
US7670762B2 (en) * 2006-01-17 2010-03-02 Brennen Medical, Llc Biocompatible tissue graft material for implant and method of making
RU2408736C1 (en) * 2009-10-09 2011-01-10 Государственное научное учреждение Всероссийский научно-исследовательский институт пантового оленеводства Сибирского отделения Российской академии сельскохозяйственных наук (ГНУ ВНИИПО СО Россельхозакадемии) Method to dehair siberian stag antlers
CN102505057B (en) * 2011-10-21 2013-10-16 中国皮革和制鞋工业研究院 Cyclic utilization method of chrome tanning waste liquid
CN103343172B (en) * 2013-07-19 2015-04-08 四川大学 Method for removing crocodile skin scales by low-sulfur enzyme method
CN105603133B (en) * 2015-12-23 2018-06-29 四川达威科技股份有限公司 A kind of raw material skin depilating method
EP3425069B1 (en) * 2017-07-06 2020-04-15 Stahl International B.V. A deliming process
CN109593898B (en) * 2019-01-18 2021-07-16 陕西科技大学 Biomass-based reactive amphoteric retanning agent and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922271A (en) * 1960-06-23 1963-03-27 Roehm & Haas Gmbh Improvements in or relating to the dehairing of hides and skins
DE2053016A1 (en) * 1970-10-29 1972-05-31 Röhm GmbH, 6100 Darmstadt Process for liming animal hides or skins
DE3617448A1 (en) * 1986-05-23 1987-11-26 Roehm Gmbh Continuous unhairing of animal hides

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES421535A1 (en) * 1973-01-13 1976-06-16 Roehm Gmbh Method for preparing tannable pelts from animal skins and hides
DE2917376C2 (en) * 1979-04-28 1987-03-26 Röhm GmbH, 6100 Darmstadt Enzymatic process for hair extraction and simultaneous skin disintegration
DE2929844A1 (en) * 1979-07-23 1981-02-26 Roehm Gmbh SOFT METHOD
DE2944461A1 (en) * 1979-11-03 1981-05-14 Röhm GmbH, 6100 Darmstadt METHOD FOR SOFTENING SKINS AND SKIN
DE3612791C2 (en) * 1986-04-16 1997-01-16 Roehm Gmbh Polymethacrylate molding composition with high heat resistance and high thermal stability, process for their preparation and their use for the production of moldings

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB922271A (en) * 1960-06-23 1963-03-27 Roehm & Haas Gmbh Improvements in or relating to the dehairing of hides and skins
DE2053016A1 (en) * 1970-10-29 1972-05-31 Röhm GmbH, 6100 Darmstadt Process for liming animal hides or skins
DE3617448A1 (en) * 1986-05-23 1987-11-26 Roehm Gmbh Continuous unhairing of animal hides

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
LEDER, Band 35, Nr. 4, April 1984, Seiten 55-59, Darmstadt, DE; R.W. CRANSTON et al.: "Further report on the new CSIRO unhairing process" *

Also Published As

Publication number Publication date
DE58908425D1 (en) 1994-11-03
EP0326059B1 (en) 1994-09-28
BR8900352A (en) 1989-09-19
ATE112322T1 (en) 1994-10-15
DE3802640A1 (en) 1989-08-03
US4960428A (en) 1990-10-02
ES2061743T3 (en) 1994-12-16
EP0326059A2 (en) 1989-08-02

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