EP0182693A1 - Oxidierende, in saurem Milieu durchgeführte Bleichprozesse - Google Patents

Oxidierende, in saurem Milieu durchgeführte Bleichprozesse Download PDF

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Publication number
EP0182693A1
EP0182693A1 EP85402091A EP85402091A EP0182693A1 EP 0182693 A1 EP0182693 A1 EP 0182693A1 EP 85402091 A EP85402091 A EP 85402091A EP 85402091 A EP85402091 A EP 85402091A EP 0182693 A1 EP0182693 A1 EP 0182693A1
Authority
EP
European Patent Office
Prior art keywords
vanadate
bleaching
bath
chlorite
hydrogen peroxide
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
EP85402091A
Other languages
English (en)
French (fr)
Other versions
EP0182693B1 (de
Inventor
Jean Balland
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.)
Manufacture de Produits Chimiques Protex SARL
Original Assignee
Manufacture de Produits Chimiques Protex SARL
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 Manufacture de Produits Chimiques Protex SARL filed Critical Manufacture de Produits Chimiques Protex SARL
Publication of EP0182693A1 publication Critical patent/EP0182693A1/de
Application granted granted Critical
Publication of EP0182693B1 publication Critical patent/EP0182693B1/de
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
    • D06P1/00—General processes of dyeing or printing textiles, or general processes of dyeing leather, furs, or solid macromolecular substances in any form, classified according to the dyes, pigments, or auxiliary substances employed
    • D06P1/0024—Dyeing and bleaching in one process
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3902—Organic or inorganic per-compounds combined with specific additives
    • C11D3/3905—Bleach activators or bleach catalysts
    • C11D3/3932—Inorganic compounds or complexes
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06L—DRY-CLEANING, WASHING OR BLEACHING FIBRES, FILAMENTS, THREADS, YARNS, FABRICS, FEATHERS OR MADE-UP FIBROUS GOODS; BLEACHING LEATHER OR FURS
    • D06L4/00—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs
    • D06L4/10—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen
    • D06L4/12—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen combined with specific additives

Definitions

  • the present invention relates to an improvement made to the oxidative bleaching processes carried out in an acid medium, by the action of hydrogen peroxide.
  • bleaching in an alkaline medium is not suitable for certain fibers, such as synthetic fibers.
  • other desiderata can rule out the use of an alkaline medium even with fibers, such as cellulosic fibers, which are not altered in such a medium. For example, we may want to keep the natural fats of fibers of vegetable or animal origin, fats which would be saponified in an alkaline medium.
  • the Applicant has therefore looked into the problem of industrial improvement of bleaching in an acid medium, by the action of hydrogen peroxide.
  • the Applicant has experimentally found that the introduction of a chlorite and a small amount of a vanadate into an aqueous and acid dilution of hydrogen peroxide makes it possible to greatly increase the whitening activity of the acid oxidizing solution and of industrially carry out bleaching under good pH and temperature conditions.
  • the present invention therefore relates to a process for bleaching fibers, using hydrogen peroxide in acid dilution, which is characterized in that the hydrogen peroxide is activated by the simultaneous presence of a chlorite and d 'an alkaline vanadate, in the bleaching bath.
  • the acid pH range of the bath can be between 3 and 6 and the temperatures between 30 and 130 ° C, preferably between 60 and 90 ° C.
  • the vanadate can be chosen from the family comprising vanadates of alkali metals and ammonium vanadate. Preference will be given among chlorites, to the use of sodium chlorite.
  • the necessary quantities of hydrogen peroxide will depend on the particularities of the bleaching process; these quantities could therefore be very variable and be, for example, between 1 and 100 g / l of a 35% hydrogen peroxide solution.
  • the necessary amounts of sodium chlorite will be between 0.1 and 10 g of chlorite per liter of the bath and preferably between 1 and 4 g / l.
  • the amounts of vanadate will be between 0.01 and 1 g per liter of bleaching bath and, preferably, between 0.1 and 0.4 g / 1.
  • sample bleached in bath c has a significantly higher whiteness level than that of samples from other baths with, in addition, good elimination of the shells of the fiber.
  • the temperature of the baths is brought to 80 ° C., this temperature is maintained for 20 minutes, then the temperature is brought to 110 ° C.
  • the sample from bath b has a weaker and duller coloration, the cellulosic fiber is not bleached and is heavily soiled by the dispersed dye.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Organic Chemistry (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Paper (AREA)
  • Coloring (AREA)
  • Treatment Of Fiber Materials (AREA)
EP85402091A 1984-10-31 1985-10-30 Oxidierende, in saurem Milieu durchgeführte Bleichprozesse Expired EP0182693B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8416682A FR2572430B1 (fr) 1984-10-31 1984-10-31 Perfectionnement aux procedes de blanchiment oxydant realises en milieu acide.
FR8416682 1984-10-31

Publications (2)

Publication Number Publication Date
EP0182693A1 true EP0182693A1 (de) 1986-05-28
EP0182693B1 EP0182693B1 (de) 1988-08-31

Family

ID=9309188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85402091A Expired EP0182693B1 (de) 1984-10-31 1985-10-30 Oxidierende, in saurem Milieu durchgeführte Bleichprozesse

Country Status (5)

Country Link
EP (1) EP0182693B1 (de)
JP (1) JPS61502265A (de)
DE (1) DE3564713D1 (de)
FR (1) FR2572430B1 (de)
WO (1) WO1986002674A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19530786A1 (de) * 1995-08-22 1997-02-27 Hoechst Ag Bleichmittelzusammensetzung enthaltend Polyoxometallate als Bleichkatalysator
DE19942224A1 (de) * 1999-09-03 2001-03-08 Henkel Kgaa Verwendung von Übergangsmetallkomplexverbindungen zur Verstärkung der Bleichwirkung von Persauerstoffverbindungen in sauren Systemen

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471437A1 (fr) * 1979-12-14 1981-06-19 Protex Manuf Prod Chimiq Procede de blanchiment oxydant de materiaux fibreux

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2471437A1 (fr) * 1979-12-14 1981-06-19 Protex Manuf Prod Chimiq Procede de blanchiment oxydant de materiaux fibreux

Also Published As

Publication number Publication date
FR2572430A1 (fr) 1986-05-02
DE3564713D1 (en) 1988-10-06
EP0182693B1 (de) 1988-08-31
WO1986002674A1 (fr) 1986-05-09
JPS61502265A (ja) 1986-10-09
FR2572430B1 (fr) 1987-01-23
JPS6339704B2 (de) 1988-08-08

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