GB475996A - Manufacture of polyazo-dyestuffs - Google Patents
Manufacture of polyazo-dyestuffsInfo
- Publication number
- GB475996A GB475996A GB793/37A GB79337A GB475996A GB 475996 A GB475996 A GB 475996A GB 793/37 A GB793/37 A GB 793/37A GB 79337 A GB79337 A GB 79337A GB 475996 A GB475996 A GB 475996A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- sulphonic
- mol
- methyl
- used instead
- 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
- C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
Polyazo dyes are made by causing to act on resorcinol in any order, 1 mol. of a diazotized sulphonic acid of the thiazole series and 1 mol. of a diazotized p-aminoazo dyestuff of the general formula R1-N=N-R2-NH2, in which R2 is the residue of a middle component and R1 is the residue of an intermediate product from 1 mol. of a tetrazo compound of the diphenyl series and 1 mol. of a yellow component, that is, a mononuclear aromatic oxy-compound, such as phenol, the cresols or xylenols and their carboxylic and sulphonic acids, or compounds which contain a methylene group capable of coupling, such as 1-phenyl-3-methyl-5-pyrazolone, acetoacetic anilide, dioxyquinoline or their sulphonic acids. They have a better affinity for vegetable fibre than the dyestuffs made according to Specification 267,162, [Class 2 (iii)], and yield brown shades on cotton and leather. The following dyestuffs are described in examples: (1) salicylic acid --> benzidine \sM 1-naphthylamine-6- or 7-sulphonic acid --> resorcinol \sM primuline; salicylic acid may be replaced by a cresotinic acid, p-cresol or xylenol, primuline by dehydrothiotoluidine monosulphonic acid and benzidine by tolidine; (2) 1-amino-2-methoxy-5-methyl-benzene is used instead of 1-naphthylamine-6-or 7-sulphonic acid in (1) and salicylic acid may be replaced by 1-(4<1>-sulphophenyl)-3-methyl-5-pyrazolone; (3) 1-(4<1>-sulphophenyl)-3-methyl-5-pyrazolone is used instead of salicylic acid in (1); dehydrothiotoluidine monosulphonic acid, tolidine, 4 : 4<1>-diamino-3 : 3<1>-dichlorodiphenyl and a sulphonic acid of acetoacetic anilide may also be used; (4) the thiazole obtained by condensing J acid with m-nitrobenzaldehyde and sodium polysulphide is used instead of primuline in (1); tolidine, dianisidine and 3 : 3<1>-dichlorobenzidine may be used instead of benzidine. p - Aminophenylnaphthothiazole sulphonic acid (cf. German Specification 165,126) is also specified. British Specification 469,646 also is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH475996X | 1936-01-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB475996A true GB475996A (en) | 1937-11-30 |
Family
ID=4516156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB793/37A Expired GB475996A (en) | 1936-01-09 | 1937-01-11 | Manufacture of polyazo-dyestuffs |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB475996A (en) |
-
1937
- 1937-01-11 GB GB793/37A patent/GB475996A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB475996A (en) | Manufacture of polyazo-dyestuffs | |
| GB517335A (en) | Process for the manufacture of polyazodyestuffs | |
| US2059903A (en) | Water insoluble azo dyestuffs and their production | |
| GB454470A (en) | A process for the manufacture of azodyestuffs | |
| US2158407A (en) | Azo dyestuffs and their manufacture | |
| US2112405A (en) | Polyazo-dyestuffs | |
| GB870698A (en) | Improvements in the production of green trisazo dyestuffs | |
| US2057063A (en) | Azo dyes and their production | |
| GB785101A (en) | Improvements in the production of green trisazo dyestuffs | |
| GB430596A (en) | The manufacture of substantive dyestuffs | |
| GB536159A (en) | Manufacture of brown polyazo dyestuffs, especially suitable for dyeing leather | |
| US2214337A (en) | Manufacture of disazo dyes | |
| US2047910A (en) | Mordant-dyeing monoazo dye and its production | |
| US2128188A (en) | Azo dyestuffs and their manufacture | |
| GB500415A (en) | Manufacture of black trisazo dyestuffs | |
| GB432122A (en) | Azo dyestuffs and their manufacture | |
| GB423237A (en) | New azo dyestuffs | |
| GB450128A (en) | The manufacture of nitro-azo-dyestuffs containing metal | |
| GB519644A (en) | Process for the manufacture of substantive green polyazodyestuffs | |
| GB456768A (en) | Process for the manufacture of polyazo dyestuffs | |
| GB427241A (en) | The manufacture of dyestuffs | |
| GB489562A (en) | Manufacture of disaxo-dyestuffs | |
| GB448601A (en) | Manufacture of monoazo-dyestuffs | |
| DE1008432B (en) | Process for the production of green trisazo dyes | |
| GB443841A (en) | Process for the manufacture of azodyestuffs |