| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c805bcfcfd0590564dfd409ea39fbba0 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3336 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3335
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3375
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3275
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09B11-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D493-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-1455 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-30 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-337
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-333
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-24
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C229-52 |
| filingDate |
1986-11-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b4e4853fe66fd2b1d4a7b8a6036379de
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1abcdcd443e8abd5e5e4f0635f5f920b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5e5473c21e15e168575e318f9daa5c72
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2b9d13b16493e29fa1d6eb404345de7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_97d57e109903fa7c8a59c7c381751f8b
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_526920471c05860fc6d3fcc9c0d09a9c |
| publicationDate |
1987-07-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
JP-S62161750-A |
| titleOfInvention |
Benzoic acid derivative |
| abstract |
NEW MATERIAL:A compound shown by formula I (R is methyl or ethyl). EXAMPLE:o-(4-N-n-Propylmethylamino-2-hydroxybenzoyl) benzoic acid. USE:A raw material for a fluoran compound useful as coloring dye for coloring recording material such as heat-sensitive recording paper or pressure-sensitive copying paper, etc. For example, a compound shown by formula II useful as coloring dye can be obtained by reacting a compound shown by formula I with 4-ethoxy-2-methyldiphenylamine. PREPARATION:1 mol m-aminophnol derivative shown by formula III is reacted with approximately 1 mol phthalic anhydride to give a compound shown by formula I. The reaction is advantageously advanced in a solvent (e.g., toluene, perchloroethylene) under heating at the reflux temperature of the solvent. |
| priorityDate |
1982-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |