GB630181A - Manufacture of azo dyestuffs - Google Patents

Manufacture of azo dyestuffs

Info

Publication number
GB630181A
GB630181A GB28979/47A GB2897947A GB630181A GB 630181 A GB630181 A GB 630181A GB 28979/47 A GB28979/47 A GB 28979/47A GB 2897947 A GB2897947 A GB 2897947A GB 630181 A GB630181 A GB 630181A
Authority
GB
United Kingdom
Prior art keywords
acid
disulphonic
sulphonic acid
phenylenediamine
aminobenzoyl
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
GB28979/47A
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.)
Novartis AG
Original Assignee
JR Geigy AG
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 JR Geigy AG filed Critical JR Geigy AG
Publication of GB630181A publication Critical patent/GB630181A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09BORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B43/00Preparation of azo dyes from other azo compounds
    • C09B43/12Preparation of azo dyes from other azo compounds by acylation of amino groups
    • C09B43/136Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
    • C09B43/14Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents with phosgene or thiophosgene

Landscapes

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

Abstract

Azo dyestuffs are manufactured by treating two molecular proportions of an aminoazo dyestuff of the general formula R1-N=N-R2-NH2, wherein R1 represents the radical of an O-acyl (e.g. acetyl or especially p-toluenesulphonyl) 1 : 8-aminonaphthol-3 : 6- or 4 : 6-disulphonic acid, and R2 represents the radical of a primary aromatic amine coupling in p-position to the amino group, together with one molecular proportion of a mono- or polynuclear aromatic compound containing two primary amino groups, not in o-position to one another, and, if desired, further substituents, particularly water-solubilizing groups, with phosgene until the primary amino groups are completely converted, and subsequently splitting off the acyl radical from the O-acyl group. The products dye cellulose fibres in red tints. Examples and a table illustrate the use of the following components: p-coupling amines: 1 - amino - 3 - methyl - 6 - methoxybenzene, m - anisidine, m - toluidine, 2 - amino - 4-methylphenoxyacetic acid; diamines: 4 : 41-diaminostilbene - 2 : 21 - disulphonic acid and its mono- (m- and p-aminobenzoyl)- and di-(p-aminobenzoyl)-derivatives, benzidine and its 3-sulphonic acid, 2 : 21- and 3 : 31-disulphonic acids and 3 : 31-dicarboxylic acid, m- and p-phenylenediamine, p - phenylenediamine - carboxylic and sulphonic acid, 1 : 3-phenylenediamine - 4 - sulphonic acid, 4 : 41 - diaminodiphenylurea - 3 : 31 - disulphonic acid, 4-(41 - aminobenzoylamino) - 1 - aminobenzene-2 - sulphonic acid, 1 - methyl - 2 : 6 - diaminobenzene - 4 - sulphonic acid, 4 : 41 - diaminodiphenyl sulphide and its 2 : 21-disulphonic acid, 4 : 41 - diaminodiphenylamine - 2 - sulphonic acid, 41 - aminobenzoyl - p - phenylenediamine, o - dianisidine, o - tolidine and 4 : 41-diaminodiphenylmethane. Additional diamines specified are 4 : 41-diaminodiphenylurea-2 : 21-disulphonic acid, 4-(31-aminocinnamoylamino)-1-aminobenzene-2-sulphonic acid and 1 : 5-diaminonaphthalene-3 : 7-disulphonic acid.
GB28979/47A 1946-10-31 1947-10-30 Manufacture of azo dyestuffs Expired GB630181A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH630181X 1946-10-31

Publications (1)

Publication Number Publication Date
GB630181A true GB630181A (en) 1949-10-06

Family

ID=4524693

Family Applications (1)

Application Number Title Priority Date Filing Date
GB28979/47A Expired GB630181A (en) 1946-10-31 1947-10-30 Manufacture of azo dyestuffs

Country Status (1)

Country Link
GB (1) GB630181A (en)

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