GB212029A - Manufacture of new azo dyestuffs - Google Patents

Manufacture of new azo dyestuffs

Info

Publication number
GB212029A
GB212029A GB122323A GB122323A GB212029A GB 212029 A GB212029 A GB 212029A GB 122323 A GB122323 A GB 122323A GB 122323 A GB122323 A GB 122323A GB 212029 A GB212029 A GB 212029A
Authority
GB
United Kingdom
Prior art keywords
aniline
compounds
dyestuffs
diazo
group
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
GB122323A
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
British Dyestuffs Corp 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 British Dyestuffs Corp Ltd filed Critical British Dyestuffs Corp Ltd
Priority to GB122323A priority Critical patent/GB212029A/en
Publication of GB212029A publication Critical patent/GB212029A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Abstract

Azo dyes are prepared by coupling diazo or tetrazo compounds with the alkyl-o -sulphonic acids derived from secondary amines, for example those obtained from aldehyde bisulphites and methyl- or ethyl-aniline. Those products which contain a nitro group in the para position to the azo group may be reduced with sodium sulphide to azo compounds containing a free amino group in addition to the alkylamino-o -sulphonic group. According to examples sodium ethylmethylaniline-o -sulphonate is coupled with the diazo compounds from p- and m-nitraniline and dinitro-aniline to yield dyestuffs giving red-orange, yellow, and bluish-red shades respectively on acetyl silk; they also behave as acid dyestuffs to animal fibres. Specifications 11343/99 and 200,873 are referred to.ALSO:Acetyl silk is dyed from slightly alkaline, acid, or neutral baths containing azo dyes derived from diazo or tetrazo compounds and the alkyl-o -sulphonic acids obtainable from aldehyde bisulphites and secondary amines such as ethyl- or methyl-aniline. The dyestuffs from p- or m-nitraniline, or dinitraniline, and sodium ethylmethylaniline-o -sulphonate are described. Specifications 11343/99, [Class 2, Acids and salts, Organic &c.], and 200,873 are referred to.
GB122323A 1923-01-13 1923-01-13 Manufacture of new azo dyestuffs Expired GB212029A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB122323A GB212029A (en) 1923-01-13 1923-01-13 Manufacture of new azo dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB122323A GB212029A (en) 1923-01-13 1923-01-13 Manufacture of new azo dyestuffs

Publications (1)

Publication Number Publication Date
GB212029A true GB212029A (en) 1924-03-06

Family

ID=9718248

Family Applications (1)

Application Number Title Priority Date Filing Date
GB122323A Expired GB212029A (en) 1923-01-13 1923-01-13 Manufacture of new azo dyestuffs

Country Status (1)

Country Link
GB (1) GB212029A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544108A (en) * 1983-09-30 1985-10-01 Hydrel Ag Method for winding a thread on a bobbin and electro-hydraulic traverse motion device for carrying out the method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4544108A (en) * 1983-09-30 1985-10-01 Hydrel Ag Method for winding a thread on a bobbin and electro-hydraulic traverse motion device for carrying out the method

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