GB823446A - Improved dyeing process - Google Patents

Improved dyeing process

Info

Publication number
GB823446A
GB823446A GB837457A GB837457A GB823446A GB 823446 A GB823446 A GB 823446A GB 837457 A GB837457 A GB 837457A GB 837457 A GB837457 A GB 837457A GB 823446 A GB823446 A GB 823446A
Authority
GB
United Kingdom
Prior art keywords
coupling
bath
dye
treated
acetate
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
GB837457A
Inventor
John George Kennedy
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.)
Fisons Industrial Chemicals Ltd
Original Assignee
Whiffen and Sons Ltd
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 Whiffen and Sons Ltd filed Critical Whiffen and Sons Ltd
Priority to GB837457A priority Critical patent/GB823446A/en
Publication of GB823446A publication Critical patent/GB823446A/en
Priority to CY20660A priority patent/CY206A/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
    • D06P1/02—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 azo dyes
    • D06P1/12—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 azo dyes prepared in situ
    • 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
    • D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
    • D06P3/34—Material containing ester groups
    • D06P3/40—Cellulose acetate
    • D06P3/44—Preparing azo dyes on the material

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Coloring (AREA)

Abstract

Textile fabrics composed of fibres which will dye with a diazotizable dispersed acetate dye, are treated with a diazotizable dye, diazotized, water-washed, and then treated with a buffer solution comprising a weak organic acid and a salt of a p weak organic acid, either immediately prior to, or in conjunction with, coupling the diazotized dye with phloroglucinol, and any part-coupling treatment is effected in the coupling bath. Fabrics of cellulose acetate and triacetate and polyamides may be treated in this way, and diazotizable cellulose acetate disperse dyes are preferred. The buffer solution may comprise acetic acid and sodium acetate. The coupling bath may contain conventional additives, e.g. sodium sulphate and dispersing agents, and part-coupling treatment, effected in the coupling bath, may include soaping off. In an example, an acetate fabric is dyed with Dispersol Diazo Black 2BS (C.I. Disperse Black 2), diazotized, water-washed and then treated for 5 minutes at 20 DEG C. in a bath containing 60 gms. sodium acetate and 60 mls. 30% by weight acetic acid in 60 litres of water. Coupling was effected by adding 10 gms. phloroglucinol and heating to 30 DEG C. After 15-30 mins. the temperature was raised to 50 DEG C. The bath was then neutralized with ammonia, 20 gms. soap added and the temperature held at 50-70 DEG C. for 15 mins., after which the fabric was rinsed and dried. A black dyed fabric of good penetration and fastness was obtained.
GB837457A 1957-03-14 1957-03-14 Improved dyeing process Expired GB823446A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB837457A GB823446A (en) 1957-03-14 1957-03-14 Improved dyeing process
CY20660A CY206A (en) 1957-03-14 1960-10-25 Improved dyeing process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB837457A GB823446A (en) 1957-03-14 1957-03-14 Improved dyeing process

Publications (1)

Publication Number Publication Date
GB823446A true GB823446A (en) 1959-11-11

Family

ID=9851308

Family Applications (1)

Application Number Title Priority Date Filing Date
GB837457A Expired GB823446A (en) 1957-03-14 1957-03-14 Improved dyeing process

Country Status (2)

Country Link
CY (1) CY206A (en)
GB (1) GB823446A (en)

Also Published As

Publication number Publication date
CY206A (en) 1960-10-25

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