GB622272A - Improvements in or relating to dyes and particularly photographic sensitising dyes - Google Patents
Improvements in or relating to dyes and particularly photographic sensitising dyesInfo
- Publication number
- GB622272A GB622272A GB24238/48A GB2423848A GB622272A GB 622272 A GB622272 A GB 622272A GB 24238/48 A GB24238/48 A GB 24238/48A GB 2423848 A GB2423848 A GB 2423848A GB 622272 A GB622272 A GB 622272A
- Authority
- GB
- United Kingdom
- Prior art keywords
- dibromide
- hexamethylene
- bis
- nuclei
- methylbenzthiazole
- 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
- C09B23/00—Methine or polymethine dyes, e.g. cyanine dyes
- C09B23/14—Styryl dyes
- C09B23/141—Bis styryl dyes containing two radicals C6H5-CH=CH-
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Indole Compounds (AREA)
- Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
Abstract
Styryl dyes are prepared by condensing a p-tertiary amino aromatic aldehyde containing a single aldehyde group with an alkyl bis quaternary salt of a heterocyclic nitrogen compound having a reactive methyl group in the a -or g -position to each heterocyclic nitrogen atom. The condensation may be effected in the presence of an acid binding substance, especially an organic amine having a dissociation constant greater than pyridine, e.g. ethylamine, diethylamine, piperidine, and diethylcyclohexylamine. The heterocyclic nuclei may be thiazole, oxazole, selenazole, iminazole, indolenine, dialkylindolenine, or pyridine nuclei, or nuclei having fused-on carbocyclic rings such as benzthiazole or quinoline nuclei, and may be linked by the use of polyfunctional hydrocarbon derivatives such as polyhalogen substituted alkanes, alkyl esters of alkylene or cycloalkylene sulphonic acids, alkyl esters of arylene sulphonic acids, alkyl disulphates, esters of sulphonic acids with polyhydric alcohols, and mixed compounds such as a -bromo-b -ethylsulphonates of ethane, and these derivatives may be substituted by nitro, primary or secondary amino, hydroxy, carbonyl, thiocarbonyl, heterocyclic, or hydrocarbon groups. The aldehyde may be p-dimethylaminobenzaldehyde, o-methyl-p-diethylaminobenzaldehyde, 4 - diethylamino - 1 - naphthaldehyde, 6 - diethylamino - 2 - naphthaldehyde, or p-N-morpholinobenzaldehyde. Hexamethylene - bis - (2 - p - dimethylaminostyrylbenzthiazole)-dibromide is prepared by refluxing together hexamethylene-bis-(2-methylbenzthiazole) dibromide, p-dimethylaminobenzaldehyde, alcohol, and piperidine. Hexamethylene - bis - (2 - methylbenzthiazole) dibromide is prepared by heating together hexamethylene dibromide and 2-methylbenzthiazole. Specifications 334,706, [Class 2 (iii)], and 573,394 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US622272XA | 1941-09-03 | 1941-09-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB622272A true GB622272A (en) | 1949-04-28 |
Family
ID=22041033
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB24238/48A Expired GB622272A (en) | 1941-09-03 | 1946-04-26 | Improvements in or relating to dyes and particularly photographic sensitising dyes |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB622272A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2411219A1 (en) * | 1977-12-07 | 1979-07-06 | Basf Ag | METHINIC COLORANTS, THEIR PREPARATION AND THEIR USES |
-
1946
- 1946-04-26 GB GB24238/48A patent/GB622272A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2411219A1 (en) * | 1977-12-07 | 1979-07-06 | Basf Ag | METHINIC COLORANTS, THEIR PREPARATION AND THEIR USES |
US4256458A (en) | 1977-12-07 | 1981-03-17 | Basf Aktiengesellschaft | Methine dyes for paper and amonically-modified fibers |
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