GB1057065A - Disazo dyes, their production and application - Google Patents
Disazo dyes, their production and applicationInfo
- Publication number
- GB1057065A GB1057065A GB4086263A GB4086263A GB1057065A GB 1057065 A GB1057065 A GB 1057065A GB 4086263 A GB4086263 A GB 4086263A GB 4086263 A GB4086263 A GB 4086263A GB 1057065 A GB1057065 A GB 1057065A
- Authority
- GB
- United Kingdom
- Prior art keywords
- alkyl
- formula
- coupling
- disazo dyes
- acetoacetylamino
- 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
- C09B35/02—Disazo dyes
- C09B35/039—Disazo dyes characterised by the tetrazo component
- C09B35/08—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl
- C09B35/10—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type
- C09B35/105—Disazo dyes characterised by the tetrazo component the tetrazo component being a derivative of biphenyl from two coupling components of the same type from two coupling components with reactive methylene groups
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C255/00—Carboxylic acid nitriles
- C07C255/49—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton
- C07C255/58—Carboxylic acid nitriles having cyano groups bound to carbon atoms of six-membered aromatic rings of a carbon skeleton containing cyano groups and singly-bound nitrogen atoms, not being further bound to other hetero atoms, bound to the carbon skeleton
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
Abstract
The invention comprises the disazo dyes produced by coupling a tetrazotized 4,41-diaminodiphenyl which may be further substituted, e.g. by Cl, Br or NO2 with compounds of formula <FORM:1057065/C4-C5/1> wherein R and "alkyl" each represet C1-C4 alkyl radicals. The dyes are water-insoluble and may be used as pigments in the colouring of paper, natural and synthetic resins, rubber and cellulose lacquers (see Division C3) in yellow, orange or brown shades.ALSO:Compounds of formula <FORM:1057065/C2/1> wherein R and "alkyl" are C1-C4 alkyl groups are prepared by brominating the corresponding 1 - acylacetylamino - 2,5 - dialkoxy - benzenes. Thus 1 - acetoacetylamino - 2,5 - dimethoxy benzene is reacted with bromine in glacial acetic acid solution to give 1-acetoacetylamino-2,5-dimethoxy-4-bromobenzene.ALSO:In examples polyvinyl chloride films and nitrocellulose lacquers are coloured in yellow and brown shades by the incorporation of disazo dyes obtained by coupling tetrazotized 4,41-diaminodiphenyls with coupling components of formula <FORM:1057065/C3/1> wherein R and "alkyl" are C1-C4 alkyl groups.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1257462A CH400419A (en) | 1962-10-29 | 1962-10-29 | Process for the preparation of disazo dyes |
| CH1501262A CH416662A (en) | 1962-12-21 | 1962-12-21 | Process for the preparation of 1-acylacetylamino-2,5-dialkoxy-4-bromobenzenes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1057065A true GB1057065A (en) | 1967-02-01 |
Family
ID=25710557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4086263A Expired GB1057065A (en) | 1962-10-29 | 1963-10-16 | Disazo dyes, their production and application |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB1057065A (en) |
-
1963
- 1963-10-16 GB GB4086263A patent/GB1057065A/en not_active Expired
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