GB295716A - Improvements in leuco-compounds of vat dyes - Google Patents
Improvements in leuco-compounds of vat dyesInfo
- Publication number
- GB295716A GB295716A GB22926/28A GB2292628A GB295716A GB 295716 A GB295716 A GB 295716A GB 22926/28 A GB22926/28 A GB 22926/28A GB 2292628 A GB2292628 A GB 2292628A GB 295716 A GB295716 A GB 295716A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leuco
- esters
- alkylolamine
- vat dyes
- acid
- 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
- C09B9/00—Esters or ester-salts of leuco compounds of vat dyestuffs
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Paper (AREA)
- Coloring (AREA)
- Color Printing (AREA)
Abstract
295,716. Du Pont de Nemours & Co., E. I., (Assignees of Kern, J. G.). Aug. 19, 1927, [Convention date]. Leuco compounds of vat dyes, esters of.-The sulphuric esters of leuco compounds of vat dyes are stabilized by treating them with an alkylolamine. The treatment may comprise dissolving the sodium salts of the leucoesters in one or more alkylolamines, or the sodium salts may be treated with an organic acid to liberate the acid esters, which are then converted into the alkylolamine salts. The alkylolamines may contain one or more mono-, di- or poly-oxyalkyl groups. In an example, Soledon Jade Green paste is treated with acetic acid tc, precipitate the free leuco sulphuric acid ester and the latter is filtered and dissolved in diethanolamine, preferably in the absence of oxygen. Mono- or triethanolamine! or methyl-dipropanediolamine may be used instead of diethanolamine, and the process may be applied to other " Indigosol " or " Soledon " colours. The alkylolamine may also be added to a printing paste made up with one of the commercial leuco esters and British gumstarch thickening; cotton, silk or wool is printed with the paste and passed through a bath containing ferric chloride, ammonium persulphate, or sodium nitrite and sulphuric acid. Specifications 186,057, 231,889, 247,787, and 251,491 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US295716XA | 1927-08-19 | 1927-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB295716A true GB295716A (en) | 1929-11-08 |
Family
ID=21849735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22926/28A Expired GB295716A (en) | 1927-08-19 | 1928-08-08 | Improvements in leuco-compounds of vat dyes |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB295716A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2842552A (en) * | 1955-06-24 | 1958-07-08 | Gen Aniline & Film Corp | Procedures for the preparation of the leuco sulfuric esters of vat dyestuffs |
-
1928
- 1928-08-08 GB GB22926/28A patent/GB295716A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2842552A (en) * | 1955-06-24 | 1958-07-08 | Gen Aniline & Film Corp | Procedures for the preparation of the leuco sulfuric esters of vat dyestuffs |
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