http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S575757-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_43000a5cfa837b51a2a690856b95ada2 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-00 |
| filingDate | 1980-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_050bfc4283f474d947ef783be494022e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3c798bb88064ae7a11a7ac5367dad86 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_7605150620bcdd9652ff2fbab0f91181 |
| publicationDate | 1982-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S575757-A |
| titleOfInvention | Fluoran compound |
| abstract | NEW MATERIAL:A fluoran compound shown by the formula I (R 1 and R 2 are methyl or ethyl; R 3 are lower alkyl) having 2-(acylphenyl)amino group. n EXAMPLE: 2-(4-Acetylphenyl)amino-6-diethylamino-fluoran. n USE: A dyestuff precursor useful as (electrically-conductive) heat-sensitive recording chart, pressure-sensitive duplicating paper, etc. Almost no natural coloring of the chart itself, having high coloring concentration, low starting temperature of coloring, and improved starting of coloring. n PROCESS: For example, a diphenylamine compound (e.g., 4-methyoxy-4'-acetyl- diphenylamine, etc.) shown by the formula II (R is H or lower alkyl) is reacted with a benzophenone compound [e.g., 2-(2-hydroxy-4-dimethylamino)benzoyl-benzoic acid, etc.] shown by the formula III in the presence of a condensation agent, e.g., conc. sulfuric acid, etc, at 0W80°C. Water and an alkali are added to the reaction product and it is adjusted to a pH8W10 to give a deposit, which is treated with toluene, etc. and separated. n COPYRIGHT: (C)1982,JPO&Japio |
| priorityDate | 1980-06-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.