GB778806A - Manufacture of water-insoluble azo-dyestuff pigments - Google Patents
Manufacture of water-insoluble azo-dyestuff pigmentsInfo
- Publication number
- GB778806A GB778806A GB34628/53A GB3462853A GB778806A GB 778806 A GB778806 A GB 778806A GB 34628/53 A GB34628/53 A GB 34628/53A GB 3462853 A GB3462853 A GB 3462853A GB 778806 A GB778806 A GB 778806A
- Authority
- GB
- United Kingdom
- Prior art keywords
- oil
- acid
- alkyl
- aqueous emulsion
- pyrazolone
- 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
- C09B41/00—Special methods of performing the coupling reaction
- C09B41/001—Special methods of performing the coupling reaction characterised by the coupling medium
Abstract
Alkyl - sulphonamido - alkyl carboxylic acids containing at least 8 carbon atoms in the first alkyl group are obtained by reacting with ammonia the sulphochlorination products of aliphatic hydrocarbons, e.g. a fraction obtained by the Fischer-Tropsch synthesis, and reacting the sulphonamides obtained with halogen-carboxylic acids, e.g. chloracetic acid.ALSO:Water-insoluble azo - dyestuff pigments having a soft grain are obtained by adding to the aqueous liquid in which the pigment is formed or worked up at any stage during the coupling operation (i.e. during coupling or immediately after) an aqueous emulsion of an oil containing an alkyl-sulphonamidoalkylcarboxylic acid as emulsifying agent containing at least 8 carbon atoms in the first alkyl group (see Group IV(b)) or a salt of such acid with an inorganic or organic base or a mixture of an oil with such an emulsifying agent, the ratio of the oil to pigment being so chosen that the finished pigment powder contains at least 10 per cent oil based on the weight of pigment, preferably 10-25 per cent. The mixture of oil and agent may first be clarified by addition of water, a fatty acid such as oleic acid, an alcohol such as butanol or acetic acid. Oils specified are peanut, linseed and maize grain oils, also mineral or synthetic oils. In examples (1) an aqueous emulsion of mineral oil containing a sodium alkyl - sulphonamide - acetate is added to a coupling solution containing 1 - phenyl - 3 - methyl - 5 - pyrazolone and 1 - phenyl 3 - carbethoxy - 5 - pyrazolone to which is added tetrazotized 3, 31 - dichloro - 4, 41 - diamino - diphenyl; (2) an aqueous emulsion of the same sodium alkyl - sulphonamido - acetate with spindle oil is added to a coupling solution containing 1 - phenyl - 3 - carbethoxy - 5 - pyrazolone or 1 - tolyl - 3 - methyl - 5 - pyrazolone, followed by the addition of tetrazotized 3, 31 - dichloro - 4, 41 - diaminodiphenyl; (3) an aqueous emulsion as under (2) is heated with a coupling solution prepared from diazotized 1 - amino - 3 - methyl - 4 - chlorobenzene - 6 - sulphonic acid and b - naphthol; (4) an aqueous emulsion as under (2) is heated with a coupling solution of the dye aniline -->a - naphthylamine --> acetonyl - 1, 8-naphthylene diamine or a coupling solution of the dye 2 - chloro - 4 - nitranline--> b - naphthol.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE778806X | 1952-12-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB778806A true GB778806A (en) | 1957-07-10 |
Family
ID=6687048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB34628/53A Expired GB778806A (en) | 1952-12-12 | 1953-12-11 | Manufacture of water-insoluble azo-dyestuff pigments |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB778806A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028464A1 (en) * | 1979-10-26 | 1981-05-13 | Imperial Chemical Industries Plc | Azo dyestuff preparation by phase transfer catalysed coupling in a two-phase medium |
| WO2008052996A1 (en) * | 2006-10-30 | 2008-05-08 | Shell Internationale Research Maatschappij B.V. | Fuel compositions |
-
1953
- 1953-12-11 GB GB34628/53A patent/GB778806A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0028464A1 (en) * | 1979-10-26 | 1981-05-13 | Imperial Chemical Industries Plc | Azo dyestuff preparation by phase transfer catalysed coupling in a two-phase medium |
| WO2008052996A1 (en) * | 2006-10-30 | 2008-05-08 | Shell Internationale Research Maatschappij B.V. | Fuel compositions |
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