EP0994195A3 - Process for waterproofing chromium tanned bovine hides - Google Patents

Process for waterproofing chromium tanned bovine hides Download PDF

Info

Publication number
EP0994195A3
EP0994195A3 EP99118746A EP99118746A EP0994195A3 EP 0994195 A3 EP0994195 A3 EP 0994195A3 EP 99118746 A EP99118746 A EP 99118746A EP 99118746 A EP99118746 A EP 99118746A EP 0994195 A3 EP0994195 A3 EP 0994195A3
Authority
EP
European Patent Office
Prior art keywords
water
densodrin
hides
solution
waterproofing
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.)
Withdrawn
Application number
EP99118746A
Other languages
German (de)
French (fr)
Other versions
EP0994195A2 (en
Inventor
Martin Hack
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.)
IBEJI -Investimentos e Servicos LDA
Original Assignee
IBEJI -Investimentos e Servicos LDA
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 IBEJI -Investimentos e Servicos LDA filed Critical IBEJI -Investimentos e Servicos LDA
Publication of EP0994195A2 publication Critical patent/EP0994195A2/en
Publication of EP0994195A3 publication Critical patent/EP0994195A3/en
Withdrawn legal-status Critical Current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
    • C14C3/00—Tanning; Compositions for tanning
    • C14C3/02—Chemical tanning
    • C14C3/28—Multi-step processes
    • 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
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes

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

The present invention regards a process for making hides waterproof and water repellent, comprising:
  • a first washing step in a solution of water and formic acid;
  • a step for freeing the hides from acid in a solution of water, sodium formate, neutrigan, DENSODRIN LD 6359 and DENSODRIN CD;
  • a re-tanning and greasing step in a solution of water, powdered mimosa tannin, powedered Basyntan SL, Lipoderm Licker SLW, DENSODRIN LD 6359 and DENSODRIN CD and formic acid;
  • a dyeing step in cold water and dye and, finally, a fixing step in water and Chromitan MSN.
The use of a suitable proportion of these compounds permits to make the hides waterproof and water repellent, without, however, altering the hide surface, which then can undergo subsequent finishing treatments.
EP99118746A 1998-10-14 1999-09-23 Process for waterproofing chromium tanned bovine hides Withdrawn EP0994195A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PT10221198 1998-10-14
PT10221198A PT102211B (en) 1998-10-14 1998-10-14 TREATMENT FOR WATERPROOFING SKINS OF BOVINE ANIMALS DESIGNATEDLY BORN WITH CHROMIUM

Publications (2)

Publication Number Publication Date
EP0994195A2 EP0994195A2 (en) 2000-04-19
EP0994195A3 true EP0994195A3 (en) 2001-10-04

Family

ID=20085802

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99118746A Withdrawn EP0994195A3 (en) 1998-10-14 1999-09-23 Process for waterproofing chromium tanned bovine hides

Country Status (3)

Country Link
EP (1) EP0994195A3 (en)
JP (1) JP2000119700A (en)
PT (1) PT102211B (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040037328A (en) * 2002-10-28 2004-05-07 주식회사 성신무역 Fragrance or leather processing method
KR100516118B1 (en) * 2002-11-12 2005-09-21 한영환 Method for producing a combination tanned pig leather and the combination tanned leather produced theirby
JP4689178B2 (en) * 2004-03-05 2011-05-25 協伸株式会社 Method for producing leather dyed by inkjet and leather dyed by the method
JP5172228B2 (en) 2007-06-28 2013-03-27 ミドリホクヨー株式会社 leather
US8062540B2 (en) 2007-12-28 2011-11-22 Midori Hokuyo Co., Ltd Low-VOC leather
JP4833350B1 (en) * 2010-09-21 2011-12-07 株式会社アイランズインク Leather fabric for clothing and manufacturing method thereof, and leather clothing and manufacturing method thereof
CN104479551A (en) * 2014-12-17 2015-04-01 广东菲安妮皮具股份有限公司 Water-proof agent for leathers
CN104611482A (en) * 2015-01-22 2015-05-13 浙江祥隆皮革有限公司 Retanning and dyeing method of sheep skin
ES2632994B1 (en) * 2016-03-16 2018-06-28 Council Of Scientific & Industrial Research An improved chrome tanning procedure

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701269A (en) * 1985-08-21 1987-10-20 Basf Aktiengesellschaft Waterproofing leather and skins
DD254595A1 (en) * 1986-12-11 1988-03-02 Leder Kunstledertech Forsch METHOD OF MAKING SOFT, WHITE LEATHER
DE19612986A1 (en) * 1996-04-01 1997-10-02 Basf Ag Use of copolymers based on ethylenically unsaturated dicarboxylic acids or dicarboxylic acid anhydrides, lower olefins and hydrophobic comonomers for retanning, greasing or hydrophobicizing leather and fur skins

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701269A (en) * 1985-08-21 1987-10-20 Basf Aktiengesellschaft Waterproofing leather and skins
DD254595A1 (en) * 1986-12-11 1988-03-02 Leder Kunstledertech Forsch METHOD OF MAKING SOFT, WHITE LEATHER
DE19612986A1 (en) * 1996-04-01 1997-10-02 Basf Ag Use of copolymers based on ethylenically unsaturated dicarboxylic acids or dicarboxylic acid anhydrides, lower olefins and hydrophobic comonomers for retanning, greasing or hydrophobicizing leather and fur skins

Also Published As

Publication number Publication date
JP2000119700A (en) 2000-04-25
PT102211B (en) 2003-10-31
PT102211A (en) 2000-04-28
EP0994195A2 (en) 2000-04-19

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