GB1477161A - Disazo dye derived from j-acid urea - Google Patents

Disazo dye derived from j-acid urea

Info

Publication number
GB1477161A
GB1477161A GB62474A GB62474A GB1477161A GB 1477161 A GB1477161 A GB 1477161A GB 62474 A GB62474 A GB 62474A GB 62474 A GB62474 A GB 62474A GB 1477161 A GB1477161 A GB 1477161A
Authority
GB
United Kingdom
Prior art keywords
urea
dye
acid
diazotized
disazo
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
GB62474A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB62474A priority Critical patent/GB1477161A/en
Publication of GB1477161A publication Critical patent/GB1477161A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/28—Colorants ; Pigments or opacifying agents
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B33/00—Disazo and polyazo dyes of the types A->K<-B, A->B->K<-C, or the like, prepared by diazotising and coupling
    • C09B33/02—Disazo dyes
    • C09B33/04—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound
    • C09B33/056—Disazo dyes in which the coupling component is a dihydroxy or polyhydroxy compound the coupling component being a bis-(naphthol-urea)
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B41/00—Special methods of performing the coupling reaction
    • C09B41/001—Special methods of performing the coupling reaction characterised by the coupling medium
    • C09B41/004—Special methods of performing the coupling reaction characterised by the coupling medium containing a reaction assistant, e.g. urea

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Paper (AREA)
  • Coloring (AREA)

Abstract

1477161 A disazo dye derived from J-acid urea IMPERIAL CHEMICAL INDUSTRIES Ltd 9 Dec 1974 [7 Jan 1974] 00624/74 Heading C4P The novel disazo dyestuff of the formula is obtained in admixture with minor amounts of the two symmetrical disazo dyestuffs by coupling 1 mol of diazotized 2-naphthylamine-6- sulphonic acid and 1 mol of diazotized 4-amino- 3-methylbenzene sulphonic acid with one mole of J-acid urea. The 2 diazotized amines may be coupled simultaneously with the J-acid urea or consecutively in either order. The coupling solution may be used as such without isolating the dye since the dye has high aqueous solubility, and this solubility may be made even greater by adding known solubility improvers such as urea or substituted ureas. Particularly useful aqueous solutions may be obtained by coupling in the presence of triethanolamine so that the product is at least partly in the form of a triethanolamine salt. In one example an alkali metal hydroxide or ammonia is used in place of the triethanolamine, and the dye is isolated by the addition of 5-30% of an alkali metal chloride or ammonium chloride and the paste redissolved in aqueous urea or substituted urea. The novel dyestuff gives yellowishscarlet shades on cellulosic materials, e.g. cotton, but is particularly useful for dyeing paper.
GB62474A 1974-12-09 1974-12-09 Disazo dye derived from j-acid urea Expired GB1477161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB62474A GB1477161A (en) 1974-12-09 1974-12-09 Disazo dye derived from j-acid urea

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB62474A GB1477161A (en) 1974-12-09 1974-12-09 Disazo dye derived from j-acid urea

Publications (1)

Publication Number Publication Date
GB1477161A true GB1477161A (en) 1977-06-22

Family

ID=9707623

Family Applications (1)

Application Number Title Priority Date Filing Date
GB62474A Expired GB1477161A (en) 1974-12-09 1974-12-09 Disazo dye derived from j-acid urea

Country Status (1)

Country Link
GB (1) GB1477161A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936422A (en) * 2012-08-03 2013-02-20 上海色如丹染料化工有限公司 Production method for synthesizing red direct dye through non-phosgene method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102936422A (en) * 2012-08-03 2013-02-20 上海色如丹染料化工有限公司 Production method for synthesizing red direct dye through non-phosgene method

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee