GB894661A - Bis azo dyes - Google Patents
Bis azo dyesInfo
- Publication number
- GB894661A GB894661A GB12758/60A GB1275860A GB894661A GB 894661 A GB894661 A GB 894661A GB 12758/60 A GB12758/60 A GB 12758/60A GB 1275860 A GB1275860 A GB 1275860A GB 894661 A GB894661 A GB 894661A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dyes
- nucleus
- azo dyes
- phenol
- bis azo
- 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
- C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
- C09B31/02—Disazo dyes
- C09B31/06—Disazo dyes from a coupling component "C" containing a directive hydroxyl group
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises water-insoluble dyes of formula <FORM:0894661/IV (c)/1> where Ar is a phenol or naphthol nucleus substituted by a carboxy or carboxylic acid ester group, and optionally by an alkyl group, and when Ar is a phenol nucleus then R is H and R1 Me, whilst when Ar is a naphthol nucleus R is Me and R1 is H. The dyes are made by conventional methods. The dyes are used to colour polyolefinic materials by direct application at the boiling temperature of the dye-bath, Examples are provided of the preparation of brown dyes.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT894661X | 1959-12-15 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB894661A true GB894661A (en) | 1962-04-26 |
Family
ID=11331539
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB12758/60A Expired GB894661A (en) | 1959-12-15 | 1960-04-11 | Bis azo dyes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB894661A (en) |
-
1960
- 1960-04-11 GB GB12758/60A patent/GB894661A/en not_active Expired
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