MA21899A1 - SKIN TANNING PROCESS - Google Patents

SKIN TANNING PROCESS

Info

Publication number
MA21899A1
MA21899A1 MA22168A MA22168A MA21899A1 MA 21899 A1 MA21899 A1 MA 21899A1 MA 22168 A MA22168 A MA 22168A MA 22168 A MA22168 A MA 22168A MA 21899 A1 MA21899 A1 MA 21899A1
Authority
MA
Morocco
Prior art keywords
hides
bath
tanning
water
tanning agent
Prior art date
Application number
MA22168A
Other languages
French (fr)
Original Assignee
Gaches Chimie Sa
Toulouse Inst Nat Polytech
Chambre Syndicale De L Ind Du
Chambre Syndicale Des Patrons
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 Gaches Chimie Sa, Toulouse Inst Nat Polytech, Chambre Syndicale De L Ind Du, Chambre Syndicale Des Patrons filed Critical Gaches Chimie Sa
Publication of MA21899A1 publication Critical patent/MA21899A1/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

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.
MA22168A 1989-07-10 1990-07-06 SKIN TANNING PROCESS MA21899A1 (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
MA21899A1 true MA21899A1 (en) 1991-04-01

Family

ID=9383885

Family Applications (1)

Application Number Title Priority Date Filing Date
MA22168A MA21899A1 (en) 1989-07-10 1990-07-06 SKIN TANNING PROCESS

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
ATE93898T1 (en) 1993-09-15
CA2020548A1 (en) 1991-01-11
DD296506A5 (en) 1991-12-05
CS276444B6 (en) 1992-05-13
CN1049526A (en) 1991-02-27
PT94631B (en) 1996-01-31
FR2649413B1 (en) 1993-05-28
EP0408097B1 (en) 1993-09-01
KR910003119A (en) 1991-02-26
ES2045762T3 (en) 1994-01-16
TR25083A (en) 1992-11-01
FR2649413A1 (en) 1991-01-11
YU131890A (en) 1992-07-20
BR9003194A (en) 1991-08-27
DE69003040D1 (en) 1993-10-07
JPH03129000A (en) 1991-05-31
PT94631A (en) 1991-03-20
EP0408097A1 (en) 1991-01-16

Similar Documents

Publication Publication Date Title
US6708531B1 (en) Ecofriendly bio-process for leather processing
EP0326059A3 (en) Liming process for obtaining hair
WO2008093353A1 (en) An improved process for dehairing and fibre opening of hide/skin
FR2649413B1 (en) SKIN TANNING PROCESS
ZA9510648B (en) Aqueous composition for the pretanning of hide pelts or retanning of leather
FR2670800B1 (en) PROCESS FOR THE TREATMENT OF SKINS OR LEATHERS, TANNING AGENTS AND METHOD OF MANUFACTURE.
EP0994195A3 (en) Process for waterproofing chromium tanned bovine hides
ES2006983A6 (en) Process for the treatment of hides.
BR8105134A (en) LIKE PROCESS
US5147693A (en) Biologically stable, untanned wet animal hides
EP1656459B1 (en) A process for leather making using saline water
US38267A (en) Improved liquid composition for bating skins and hides
CA1207107A (en) Method for reversibly preserving hides
DE3669532D1 (en) METHOD FOR GREATING TREATMENT OF LEATHER AND ITS USE FOR DIRECTLY CASTING POLYURETHANE TO LEATHER / POLYURETHANE COMPOUNDS.
SU690075A1 (en) Method of wagging in fresh-dry and dry-salt methods of conservation
ES2000622A6 (en) Prodn. of fish leather by degreasing skin - treatment with keratolytic enzyme or alkali sulphide and slaked lime, and tanning
RU2233335C1 (en) Method of treating raw hide
TH9829A (en) Tanning process
TW221063B (en) Method of making air-permeable and water-proof leather
AU2003280066A1 (en) A lime-sulphide free dehairing and fibre opening process
Niwa et al. Studies on the Recycling of Collected Effluents in Chrome Upper Leather Manufacture(II)-Application of Recycling System of Collected Tannery Effluents in Industrial Scale(Kuromu kokaku seizo niokeru shugo haisui no junkanriyo ni kan suru kenkyu(II)-kojo sukeeru ni yoru ouyoteki kento)
TH9829EX (en) Tanning process
GB1469933A (en) Pretanning process
Miller Rationalization and Environmental Problems of Beamhouse Operations
RU95106110A (en) Method of leather production