BR9003194A - PROCESS TO ENJOY ACIDIFIED RAW SKINS - Google Patents

PROCESS TO ENJOY ACIDIFIED RAW SKINS

Info

Publication number
BR9003194A
BR9003194A BR909003194A BR9003194A BR9003194A BR 9003194 A BR9003194 A BR 9003194A BR 909003194 A BR909003194 A BR 909003194A BR 9003194 A BR9003194 A BR 9003194A BR 9003194 A BR9003194 A BR 9003194A
Authority
BR
Brazil
Prior art keywords
hides
bath
tanning
water
tanning agent
Prior art date
Application number
BR909003194A
Other languages
Portuguese (pt)
Inventor
Francoise Silvestre
Christine Godowa
Michel Delmas
Antoine Gaset
Original Assignee
Toulouse Inst Nat Polytech
Gaches Chimie Sa
Chambre Syndicale Des Patrons
Chambre Syndicale De L Ind Du
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 Toulouse Inst Nat Polytech, Gaches Chimie Sa, Chambre Syndicale Des Patrons, Chambre Syndicale De L Ind Du filed Critical Toulouse Inst Nat Polytech
Publication of BR9003194A publication Critical patent/BR9003194A/en

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
    • C14C9/00—Impregnating leather for preserving, waterproofing, making resistant to heat or similar purposes
    • C14C9/04—Fixing tanning agents in the leather
    • 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
    • C14C3/04—Mineral tanning
    • C14C3/06—Mineral tanning using chromium compounds
    • 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
    • C14C3/04—Mineral 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)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Separation By Low-Temperature Treatments (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
  • Macromonomer-Based Addition Polymer (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.
BR909003194A 1989-07-10 1990-07-05 PROCESS TO ENJOY ACIDIFIED RAW SKINS BR9003194A (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
BR9003194A true BR9003194A (en) 1991-08-27

Family

ID=9383885

Family Applications (1)

Application Number Title Priority Date Filing Date
BR909003194A BR9003194A (en) 1989-07-10 1990-07-05 PROCESS TO ENJOY ACIDIFIED RAW SKINS

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
PT94631B (en) 1996-01-31
ES2045762T3 (en) 1994-01-16
EP0408097A1 (en) 1991-01-16
ATE93898T1 (en) 1993-09-15
CA2020548A1 (en) 1991-01-11
MA21899A1 (en) 1991-04-01
FR2649413A1 (en) 1991-01-11
DE69003040D1 (en) 1993-10-07
TR25083A (en) 1992-11-01
PT94631A (en) 1991-03-20
DD296506A5 (en) 1991-12-05
YU131890A (en) 1992-07-20
CN1049526A (en) 1991-02-27
JPH03129000A (en) 1991-05-31
CS276444B6 (en) 1992-05-13
FR2649413B1 (en) 1993-05-28
KR910003119A (en) 1991-02-26

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Legal Events

Date Code Title Description
FD3 Appl. lapsed due to non-payment of renewal fee