ES2045762T3 - SKIN TANNING PROCEDURE. - Google Patents

SKIN TANNING PROCEDURE.

Info

Publication number
ES2045762T3
ES2045762T3 ES90201637T ES90201637T ES2045762T3 ES 2045762 T3 ES2045762 T3 ES 2045762T3 ES 90201637 T ES90201637 T ES 90201637T ES 90201637 T ES90201637 T ES 90201637T ES 2045762 T3 ES2045762 T3 ES 2045762T3
Authority
ES
Spain
Prior art keywords
hides
bath
tanning
water
tanning agent
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 - Lifetime
Application number
ES90201637T
Other languages
Spanish (es)
Inventor
Francoise Silvestre
Christine Godawa
Michel Delmas
Antoine Gaset
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.)
CHAMBRE SYNDICALE de l IND DU
CHAMBRE SYNDICALE DES PATRONS
GACHES CHIMIE SA
Institut National Polytechnique de Toulouse INPT
Original Assignee
CHAMBRE SYNDICALE de l IND DU
CHAMBRE SYNDICALE DES PATRONS
GACHES CHIMIE SA
Institut National Polytechnique de Toulouse INPT
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 CHAMBRE SYNDICALE de l IND DU, CHAMBRE SYNDICALE DES PATRONS, GACHES CHIMIE SA, Institut National Polytechnique de Toulouse INPT filed Critical CHAMBRE SYNDICALE de l IND DU
Application granted granted Critical
Publication of ES2045762T3 publication Critical patent/ES2045762T3/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C9/00Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/04Fixing tanning agents in the leather
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00Tanning; Compositions for tanning
    • C14C3/02Chemical tanning
    • C14C3/04Mineral tanning
    • C14C3/06Mineral tanning using chromium compounds
    • CCHEMISTRY; METALLURGY
    • C14SKINS; HIDES; PELTS; LEATHER
    • C14CCHEMICAL TREATMENT OF HIDES, SKINS OR LEATHER, e.g. TANNING, IMPREGNATING, FINISHING; APPARATUS THEREFOR; COMPOSITIONS FOR TANNING
    • C14C3/00Tanning; Compositions for tanning
    • C14C3/02Chemical tanning
    • C14C3/04Mineral tanning

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)
  • Macromonomer-Based Addition Polymer (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The invention relates to a process for tanning acidified wet raw hides. This process consists (a) in preparing a water-insoluble organic liquid bath, (b) in suspending in this bath an inorganic tanning agent based on a metal compound, especially a chromium salt or complex, (c) in adjusting the degree of hydration of the hides above a minimum threshold of 200% (weight of water added to the dry weight of hides) and below a maximum threshold corresponding to the limit of retention of water in the hide, (d) in bringing the hides thus hydrated into contact in the organic bath containing the tanning agent for a period of at least 4 hours and in slowly introducing a base into the bath so as gradually to raise the pH of the water retained in the hides to a final value of between a minimum threshold of 3.9 in the case of a chrome tanning agent, and a maximum threshold of 4.4 in the case of this chrome agent, and (e) in removing the hides from the bath and leaving them to rest for at least 24 hours. The process of the invention makes it possible to obtain at the same time a complete exhaustion of the tanning bath, an absence of release of tanning agent in the subsequent finishing operations and a leather of good quality.
ES90201637T 1989-07-10 1990-06-22 SKIN TANNING PROCEDURE. Expired - Lifetime ES2045762T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR8909655A FR2649413B1 (en) 1989-07-10 1989-07-10 SKIN TANNING PROCESS

Publications (1)

Publication Number Publication Date
ES2045762T3 true ES2045762T3 (en) 1994-01-16

Family

ID=9383885

Family Applications (1)

Application Number Title Priority Date Filing Date
ES90201637T Expired - Lifetime ES2045762T3 (en) 1989-07-10 1990-06-22 SKIN TANNING PROCEDURE.

Country Status (16)

Country Link
EP (1) EP0408097B1 (en)
JP (1) JPH03129000A (en)
KR (1) KR910003119A (en)
CN (1) CN1049526A (en)
AT (1) ATE93898T1 (en)
BR (1) BR9003194A (en)
CA (1) CA2020548A1 (en)
CS (1) CS276444B6 (en)
DD (1) DD296506A5 (en)
DE (1) DE69003040D1 (en)
ES (1) ES2045762T3 (en)
FR (1) FR2649413B1 (en)
MA (1) MA21899A1 (en)
PT (1) PT94631B (en)
TR (1) TR25083A (en)
YU (1) YU131890A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IN2014DE00085A (en) * 2014-01-13 2015-07-17 Council Scient Ind Res
CN105525047B (en) * 2016-02-19 2017-12-26 北京泛博化学股份有限公司 A kind of aluminium oil process for tanning of mustrat
CN106435053B (en) * 2016-12-12 2018-10-19 温州大学 It is a kind of to be used for complexing agent and its preparation method and application of the leather without chrome tanning tanning processes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AR212025A1 (en) * 1975-07-19 1978-04-28 Boehme Chem Fab Kg LEATHER AND LEATHER PREPARATION PROCEDURE
SU821489A1 (en) * 1978-11-28 1981-04-15 Восточно-Сибирский Технологическийинститут Hide tanning composition

Also Published As

Publication number Publication date
EP0408097B1 (en) 1993-09-01
PT94631A (en) 1991-03-20
EP0408097A1 (en) 1991-01-16
FR2649413B1 (en) 1993-05-28
YU131890A (en) 1992-07-20
MA21899A1 (en) 1991-04-01
FR2649413A1 (en) 1991-01-11
JPH03129000A (en) 1991-05-31
CS276444B6 (en) 1992-05-13
PT94631B (en) 1996-01-31
KR910003119A (en) 1991-02-26
CA2020548A1 (en) 1991-01-11
DE69003040D1 (en) 1993-10-07
ATE93898T1 (en) 1993-09-15
TR25083A (en) 1992-11-01
BR9003194A (en) 1991-08-27
DD296506A5 (en) 1991-12-05
CN1049526A (en) 1991-02-27

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