GB231885A - - Google Patents
Info
- Publication number
- GB231885A GB231885A GB8942/25A GB894225A GB231885A GB 231885 A GB231885 A GB 231885A GB 8942/25 A GB8942/25 A GB 8942/25A GB 894225 A GB894225 A GB 894225A GB 231885 A GB231885 A GB 231885A
- Authority
- GB
- United Kingdom
- Prior art keywords
- acid
- salicylic
- acids
- naphthol
- diazotized
- 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
- C09B35/04—Disazo dyes characterised by the tetrazo component the tetrazo component being a benzene derivative
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Color Printing (AREA)
Abstract
Disazo dyes are produced by coupling diazotized m-aminobenzene-azo-salicylic acid or homologues or derivatives thereof with 1-acidylamino8-naphtholsulphonic acids; they are especially useful for printing red shades on cotton with chromium acetate. The m-aminobenzene-azosalicylic acids are produced by coupling diazotized m-nitranilines or acidyl-m-phenylenediamines with salicylic acids and reducing or saponifying. Components specified are m-phenylene-and m-toluylene-diamines and their sulphonic acids, salicylic and cresotinic acids, salicylic sulphonic acid, 1-acetylamino-8-naphthol-4-sulphonic acid and -4 : 6-disulphonic acid, 1-acetyl- or -benzoyl-amino-8-naphthol-3 : 6-disulphonic acid. The following examples are given:-(1) diazotized m-aminobenzene-azo-salicylic acid is coupled with 1-acetylamino-8-naphthol-4 : 6- or -3 : 6-disulphonic acid; (2) diazotized oxalyl-2 : 4-toluylenediamine-5-sulphonic acid is coupled with salicylic acid and the monoazo dye saponified, rediazotized, and coupled with 1-acetylamino-8-naphthol-3 : 6-disulphonic acid: the reduction of the dyestuffs with zinc and hydrochloric acid is also mentioned.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE231885X | 1924-04-04 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB231885A true GB231885A (en) | 1925-10-01 |
Family
ID=5878061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8942/25A Expired GB231885A (en) | 1924-04-04 | 1925-04-03 |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB231885A (en) |
-
1925
- 1925-04-03 GB GB8942/25A patent/GB231885A/en not_active Expired
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