GB743957A - Tetrakisazo dyestuffs - Google Patents
Tetrakisazo dyestuffsInfo
- Publication number
- GB743957A GB743957A GB31911/53A GB3191153A GB743957A GB 743957 A GB743957 A GB 743957A GB 31911/53 A GB31911/53 A GB 31911/53A GB 3191153 A GB3191153 A GB 3191153A GB 743957 A GB743957 A GB 743957A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sulphonic acid
- amino
- hydroxynaphthalene
- residue
- dyes
- 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
- C09B35/50—Tetrazo dyes
- C09B35/56—Tetrazo dyes of the type
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises dyes of the formula:-<FORM:0743957/IV(c)/1> wherein one R1 means H, and the other SO3H, one R2 means H, the other H, alkyl, alkoxy, carboxy, or sulpho, R3 means H or hydroxyalkyl, and R4 means H, alkyl, or alkoxy. They and other dyes are made by coupling tetrazo compounds of disazo dyes of the formula:- <FORM:0743957/IV(c)/2> (where A means the residue of a 4.41-diamino-diphenylamine-2-sulphonic acid which may contain further substituents in the benzene nuclei, B1 is the residue of 1-amino -5- hydroxynaphthalene -7- sulphonic acid. B2 is the residue of the same or another amino - hydroxy - naphthalene-sulphonic acid capable of coupling and diazotizing) with 2 moles of a 1.3-diamine of the benzene series, which contains no solubilizing groups. In examples the disazo dyes from 1 mol 4.41-diamino-diphenylamine-2-sulphonic acid and (1) 2 mols 1-amino -5- hydroxynaphthalene -7- sulphonic acid, (2) a mixture of 2-amino-8 -hydroxynaphthalene-6-sulphonic acid and 1- amino -5- hydroxynaphthalene -7- sulphonic acid and (3) successively 1-amino-5-hydroxynaphthalene -7- sulphonic acid and 1 - amino -8- hydroxynaphthalene-4-sulphonic acid, are each tetrazotized and coupled with 2 mols. 1.3-diaminobenzene. Other reactants are specified. The products dye cellulose fibres black shades. Specifications 470,407 and 703,446 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE743957X | 1952-11-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB743957A true GB743957A (en) | 1956-01-25 |
Family
ID=6647637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB31911/53A Expired GB743957A (en) | 1952-11-28 | 1953-11-17 | Tetrakisazo dyestuffs |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB743957A (en) |
-
1953
- 1953-11-17 GB GB31911/53A patent/GB743957A/en not_active Expired
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