GB630181A - Manufacture of azo dyestuffs - Google Patents
Manufacture of azo dyestuffsInfo
- 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
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
- C09B43/00—Preparation of azo dyes from other azo compounds
- C09B43/12—Preparation of azo dyes from other azo compounds by acylation of amino groups
- C09B43/136—Preparation of azo dyes from other azo compounds by acylation of amino groups with polyfunctional acylating agents
- C09B43/14—Preparation 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.
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) |
-
1947
- 1947-10-30 GB GB28979/47A patent/GB630181A/en not_active Expired
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