http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0561686-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b73bb5b611ad02b686a7967bc6ca3412 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D209-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B57-007 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-14 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B23-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B57-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-82 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D209-88 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D401-06 |
| filingDate | 1993-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_06bb147705c37e5ab60187c2559efb98 |
| publicationDate | 1993-09-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0561686-A1 |
| titleOfInvention | 2-Methyl-4, 4A-dihydro-3H-carbazolium salts and dyes derived therefrom |
| abstract | 2-Methyl-4,4a-dihydro-3 H -carbazolium salts that are useful as dye precursors and dyes derived from those precursors are disclosed. The salts are described by the formulan n wherein R¹ represents an alkyl, aryl, sulfoalkyl, carboxyalkyl, sulfatoalkyl, alkoxyalkyl, acyloxyalkyl, dialkylaminoalkylene, cycloaminoalkylene, acyl, or alkenyl group having from 1 to 18 carbon atoms; R² represents an alkyl group having up to 18 carbon atoms; R³ represents hydrogen or an alkyl group having from 1 to 18 carbon atoms; R⁴ represents hydrogen or an alkyl group having from 1 to 18 carbon atoms; R⁵ represents hydrogen, nitro, carboxyl, sulfo, hydroxy, halogen, phospho, or an alkoxy, thioalkoxy, oxyalkyl, acyl, alkyl, aryl, or amino group having up to 18 carbon atoms; wherein any two groups R⁵ , or R⁴ and a group R⁵ , or R¹ and R⁴ may together form a substituted or unsubstituted aryl, heteroaryl, aliphatic, or heteroaliphatic ring; X represents an anion; and a and b represent positive integers such that a equals b . n The salts have a partially saturated ring system that rigidifies the chromophore in the precursor and in dyes derived from it. The rigidified chromophores have narrowed absorption bands relative to corresponding non-rigid chromophores. Dyes prepared from the dye precursors of the invention typically have good solubility in non-polar solvents. |
| priorityDate | 1992-03-16-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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