GB901687A - Improvements in and relating to the bleaching of fibre material - Google Patents

Improvements in and relating to the bleaching of fibre material

Info

Publication number
GB901687A
GB901687A GB37120/58A GB3712058A GB901687A GB 901687 A GB901687 A GB 901687A GB 37120/58 A GB37120/58 A GB 37120/58A GB 3712058 A GB3712058 A GB 3712058A GB 901687 A GB901687 A GB 901687A
Authority
GB
United Kingdom
Prior art keywords
bleaching
bleached
hydrogen peroxide
value
acid
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
Application number
GB37120/58A
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.)
TEXTIL GmbH
Original Assignee
TEXTIL GmbH
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 TEXTIL GmbH filed Critical TEXTIL GmbH
Publication of GB901687A publication Critical patent/GB901687A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C407/00—Preparation of peroxy compounds
    • 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
    • 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
    • D06L4/15—Bleaching fibres, filaments, threads, yarns, fabrics, feathers or made-up fibrous goods; Bleaching leather or furs using agents which develop oxygen using organic agents

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Paper (AREA)
  • Detergent Compositions (AREA)

Abstract

Aqueous solutions of monoperacetic acid suitable for use in the bleaching of fibrous materials are prepared by reacting hydrogen peroxide with acetic acid in the presence of ammonia or a primary, secondary or tertiary organic nitrogenous base, e.g. monoethanolamine, triethanolamine or pyridine, at a pH value of less than 6. At least 65% of the hydrogen peroxide used may be reacted to form peracetic acid. Phosphates, e.g. sodium pyrophosphate, may be added to adjust or buffer the optimum pH value in the solution. Specification 561,180 is referred to.ALSO:Fibrous materials, e.g. cotton, linen, acetate rayon, regenerated cellulose, cellulose pulp and polyamide, polyester and polyacrylonitrile fibres, are bleached by treating them with an aqueous solution of monoperacetic acid prepared by reacting hydrogen peroxide with acetic anhydride in the presence of ammonia or a primary, secondary or tertiary organic nitrogenous base, e.g. monoethanolamine, triethanolamine and pyridine, at a pH value of less than 6. Solutions in which at least 65% of the hydrogen peroxide used is reacted to form peracetic acid are preferably used. Phosphates, e.g. sodium pyrophosphate, may be added to the solutions to avoid undesirable catalytic effects and contamination of the material to be bleached or of the process water with iron, manganese and copper and to adjust or buffer the optimum pH value in the solution. Bleaching is preferably effected at 60 DEG -90 DEG C. in closed vessels. The material to be bleached may be precleaned or desized prior to bleaching and may be subjected to a pretreatment with strong caustic alkali. Before or after bleaching with the monoperacetic acid solution the fibrous materials may be given a weak treatment with other bleaching agents, e.g. sodium hypochlorite. Materials which have been dyed with vat or naphthol dyestuffs may be bleached without causing changes in the hue or fastness of the dyestuffs. Specification 561,180 is referred to.
GB37120/58A 1957-11-25 1958-11-18 Improvements in and relating to the bleaching of fibre material Expired GB901687A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT359157 1957-11-25

Publications (1)

Publication Number Publication Date
GB901687A true GB901687A (en) 1962-07-25

Family

ID=3552625

Family Applications (1)

Application Number Title Priority Date Filing Date
GB37120/58A Expired GB901687A (en) 1957-11-25 1958-11-18 Improvements in and relating to the bleaching of fibre material

Country Status (2)

Country Link
DE (1) DE1158956B (en)
GB (1) GB901687A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416879A (en) * 1965-06-30 1968-12-17 Union Carbide Corp High temperature bleaching with peracetic acid
US3457023A (en) * 1965-07-07 1969-07-22 Union Carbide Corp Room-temperature bleaching of textiles with peracetic acid
WO1994018297A1 (en) * 1993-02-08 1994-08-18 Warwick International Group Limited Oxidising agents
WO1995021283A1 (en) * 1994-02-07 1995-08-10 Warwick International Group Limited Process for bleaching textiles
EP0989224A1 (en) * 1998-09-21 2000-03-29 Warwick International Group Limited Lyocell bleaching process

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3432546A (en) * 1964-11-03 1969-03-11 Fmc Corp Manufacture of peracetic acid
DE3418450A1 (en) * 1984-05-18 1985-11-28 Degussa Ag, 6000 Frankfurt METHOD FOR PRODUCING WATER-INSOLUBLE PEROXYCARBONIC ACIDS

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL102493C (en) * 1940-07-08

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3416879A (en) * 1965-06-30 1968-12-17 Union Carbide Corp High temperature bleaching with peracetic acid
US3457023A (en) * 1965-07-07 1969-07-22 Union Carbide Corp Room-temperature bleaching of textiles with peracetic acid
WO1994018297A1 (en) * 1993-02-08 1994-08-18 Warwick International Group Limited Oxidising agents
WO1995021283A1 (en) * 1994-02-07 1995-08-10 Warwick International Group Limited Process for bleaching textiles
EP0989224A1 (en) * 1998-09-21 2000-03-29 Warwick International Group Limited Lyocell bleaching process

Also Published As

Publication number Publication date
DE1158956B (en) 1963-12-12

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