GB393873A - Manufacture of azo-dyestuffs - Google Patents

Manufacture of azo-dyestuffs

Info

Publication number
GB393873A
GB393873A GB34823/32A GB3482332A GB393873A GB 393873 A GB393873 A GB 393873A GB 34823/32 A GB34823/32 A GB 34823/32A GB 3482332 A GB3482332 A GB 3482332A GB 393873 A GB393873 A GB 393873A
Authority
GB
United Kingdom
Prior art keywords
dyestuffs
dyestuff
acetic anhydride
acylating
coupling
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
GB34823/32A
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.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
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 Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Gesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB393873A publication Critical patent/GB393873A/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
    • 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)
  • Coloring (AREA)

Abstract

Monoazo dyes suitable for dyeing cellulose esters and ethers, natural or artificial resins, lacquers or varnishes, are made by coupling an aromatic diazo-compound which contains no hydroxyl group in o-position to the diazo group with a 1-amino-3-oxybenzene having free 4- and 6-positions so that coupling occurs in 4-position and acylating the dyestuffs thus obtained. Greenish-yellow to orange non-phototropic shades are obtained. The dyestuffs may be made into pastes or dry preparations with suitable dispersing agents. Suitable acylating agents are formic acid, acetic anhydride or acetylchloride, propionic anhydride, ethyl- or methylester of chlorformic acid, or a cyanate. In examples (1) and (2) aniline or p-anisidine --> (neutral) m-aminophenol is treated with acetic anhydride, (3) the dyestuff in (2) is dissolved in finished nitro-cellulose lacquer, (4) acetate silk yarn is dyed with a dispersion of the dyestuff of (2).
GB34823/32A 1931-12-21 1932-12-08 Manufacture of azo-dyestuffs Expired GB393873A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH393873X 1931-12-21

Publications (1)

Publication Number Publication Date
GB393873A true GB393873A (en) 1933-06-15

Family

ID=4514023

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34823/32A Expired GB393873A (en) 1931-12-21 1932-12-08 Manufacture of azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB393873A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759103A1 (en) * 1977-12-30 1979-07-12 Bayer Ag AZO DYES

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2759103A1 (en) * 1977-12-30 1979-07-12 Bayer Ag AZO DYES

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