http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-979251-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_19aaaa9f91b7bf94ef9bdd9425970c0c |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-02 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-02 |
| filingDate | 1961-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_03765b199f9dea4b42172511c0d85578 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7707a0c663ed134074f53b29c2ca2301 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f7f75f2ed1e18cc9e74633536ee3b248 |
| publicationDate | 1965-01-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-979251-A |
| titleOfInvention | Improvements in or relating to new sensitizing dyes and sensitized photographic emulsions |
| abstract | Benzimidazolium quaternary salts are obtained by mixing 1-ethyl-2-methyl-5-chloro-6-bromo-benzimidazole with ethyl iodide or b -bromoethanol and heating. Specification 955,963 is referred to.ALSO:Cyanine and merocyanine dyes are described which contain a 5-chloro-6-bromo-benzimidazole nucleus. Carbocyanine dyes are prepared by reacting a 5-chloro-6-bromo-benzimidazolium salt with ethyl ortho-formate to give a symmetrical dye or with a benzoxazole or benzthiazole having a reactive 2-(b -phenyliminoethylidene) group or a thiazolinium salt having a reactive 2-(b -anilinovinyl) group (in the presence of acetic anhydride) to give an unsymmetrical dye. A monomethine or merocyanine dye is prepared by reacting 1,3-diethyl - 2 - methyl - 5 - chloro - 6 - bromobenzimidazolium iodide with 1,3-dimethyl-2-methylmercapto - 5,6 - dichloro - benzimidazolium methyl sulphate or with 3-ethyl-5-acetanilido-methylene rhodanine respectively. The 1-position of the 5-chloro-6-bromo-benzimidazole nucleus may have a b -acetoxyethyl substituent. Specification 955,963 is referred to. |
| priorityDate | 1961-03-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 41.