GB189295A - The manufacture of dyestuffs of the triarylmethane series - Google Patents
The manufacture of dyestuffs of the triarylmethane seriesInfo
- Publication number
- GB189295A GB189295A GB2632421A GB2632421A GB189295A GB 189295 A GB189295 A GB 189295A GB 2632421 A GB2632421 A GB 2632421A GB 2632421 A GB2632421 A GB 2632421A GB 189295 A GB189295 A GB 189295A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ethyl
- dyestuffs
- dibenzylaniline
- sulphonated
- naphthylamine
- 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
- C09B11/00—Diaryl- or thriarylmethane dyes
- C09B11/04—Diaryl- or thriarylmethane dyes derived from triarylmethanes, i.e. central C-atom is substituted by amino, cyano, alkyl
- C09B11/10—Amino derivatives of triarylmethanes
- C09B11/12—Amino derivatives of triarylmethanes without any OH group bound to an aryl nucleus
- C09B11/16—Preparation from diarylketones or diarylcarbinols, e.g. benzhydrol
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Coloring (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Triarylmethane dyestuffs dyeing tannined cotton in reddish-violet to bluish-violet shades, are obtained by condensing 4 : 41 dialkyl-diamino-3 : 31-dimethylbenzophenone with a secondary or tertiary amine using a condensing agent such as phosphorous oxychloride. Such dyestuffs as contain a phenyl, benzyl, or naphthyl group in the amino group may be sulphonated when they dye wool similar shades from an acid bath. According to examples (1) 4 : 41-diethyl-diamino-3 : 31-dimethyl-benzophenone is condensed with ethyl-o-toluidine in toluene in presence of phosphorus oxychloride; the ethyl-o-toluidine may be replaced by ethyl-a -naphthylamine, phenyl-a -naphthylamine, ethylbenzylaniline, or dibenzylaniline: (2) the basic dyestuff from the same ketone and dibenzylaniline or 4-methyl-31-methoxydiphenylamine (Specification 11275/91) is sulphonated with 20 per cent oleum. 4 : 41 - Dialkyldiamino - 3 : 31 - diamethylbenzophenones may be obtained by the hydrolysis of the corresponding thioketones prepared by the method of Specification 20615/14. In an example 4 : 41-diethyldiamino-3 : 31-dimethylbenzo thiophenone is boiled with concentrated hydrochloric acid and the ketone precipitated by caustic soda.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2632421A GB189295A (en) | 1921-10-05 | 1921-10-05 | The manufacture of dyestuffs of the triarylmethane series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2632421A GB189295A (en) | 1921-10-05 | 1921-10-05 | The manufacture of dyestuffs of the triarylmethane series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB189295A true GB189295A (en) | 1922-11-30 |
Family
ID=10241858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2632421A Expired GB189295A (en) | 1921-10-05 | 1921-10-05 | The manufacture of dyestuffs of the triarylmethane series |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB189295A (en) |
-
1921
- 1921-10-05 GB GB2632421A patent/GB189295A/en not_active Expired
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