GB974309A - Compositions containing hydrosulfite and their applications in chemical reductions - Google Patents

Compositions containing hydrosulfite and their applications in chemical reductions

Info

Publication number
GB974309A
GB974309A GB4403761A GB4403761A GB974309A GB 974309 A GB974309 A GB 974309A GB 4403761 A GB4403761 A GB 4403761A GB 4403761 A GB4403761 A GB 4403761A GB 974309 A GB974309 A GB 974309A
Authority
GB
United Kingdom
Prior art keywords
medium
reducing
hydrosulphite
vat
dyeing
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
GB4403761A
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.)
Southern Bleachery and Print Works Inc
Original Assignee
Southern Bleachery and Print Works Inc
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 Southern Bleachery and Print Works Inc filed Critical Southern Bleachery and Print Works Inc
Publication of GB974309A publication Critical patent/GB974309A/en
Expired legal-status Critical Current

Links

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
    • D06P1/22—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 using vat dyestuffs including indigo
    • D06P1/221—Reducing systems; Reducing catalysts
    • 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
    • D06P5/00—Other features in dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form
    • D06P5/13—Fugitive dyeing or stripping dyes
    • D06P5/138—Fugitive dyeing or stripping dyes fugitive dyeing

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Coloring (AREA)

Abstract

The surfaces of iron, stainless steel and lead are cleaned by reducing metal salts and oxides thereon with a medium containing an alkali metal or ammonium hydrosulphite and an alkali metal borohydride.ALSO:Vat dyes are reduced under conditions of aerial oxidation with a medium containing hydrosulphite ions and an alkali metal borohydride. The medium may be an aqueous solution which may also contain NH4OH or NaOH, the pH being 9.5-13. The preferred constituents are sodium or ammonium hydrosulphite and sodium borohydride. The vat dyes may be applied conventionally from a bath, continuously or as the acid leuco form using a reducing bath containing NH4OH or no alkali at all, subsequently converting to the alkali leuco form before the final oxidation and finishing. The materials to be dyed may be of natural or regenerated cellulose, cellulose acetate and triacetate, polyamide, aromatic polyester or of acrylic polymers. When dyeing hydrophobic fibres carriers may be employed. Vat and azoic dyeings may be stripped with a reducing medium as above which may also contain sodium lignin sulphonate and/or polyvinyl pyrrolidone. The reducing medium may also be employed to bleach textiles and wood pulp. Examples of vat dyeing, stripping and bleaching are given; the stripping and bleaching being applied only to cotton fabrics, the dyeing to all the materials herein before listed.
GB4403761A 1961-03-16 1961-12-08 Compositions containing hydrosulfite and their applications in chemical reductions Expired GB974309A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9611561A 1961-03-16 1961-03-16
US10827161A 1961-05-08 1961-05-08

Publications (1)

Publication Number Publication Date
GB974309A true GB974309A (en) 1964-11-04

Family

ID=26791135

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4403761A Expired GB974309A (en) 1961-03-16 1961-12-08 Compositions containing hydrosulfite and their applications in chemical reductions

Country Status (2)

Country Link
CH (1) CH414533A (en)
GB (1) GB974309A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215350A (en) * 1988-03-16 1989-09-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215350A (en) * 1988-03-16 1989-09-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp
GB2215350B (en) * 1988-03-16 1992-05-20 Thiokol Morton Inc Process for bleaching mechanical wood pulp
US5129987A (en) * 1988-03-16 1992-07-14 Morton Thiokol, Inc. Process for bleaching mechanical wood pulp with sodium hydrosulfite and sodium hydroxide in a refiner

Also Published As

Publication number Publication date
CH414533A (en) 1965-11-15

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