http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0349984-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6cfc033f059d282fcd915bc8be2ae53f |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D493-10 |
| filingDate | 1989-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_5cc9d30f1c14514f2efb0086c107dca1 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_62e80887b0f7710e0ce1539d6cbe0ffc http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_07acd45dd1c4cc155e030a761f04a8b7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e264549eb3b191b6e50f06542621aa84 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f3726e76bc2a2f02536de79f8f48da60 |
| publicationDate | 1991-03-04-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-H0349984-A |
| titleOfInvention | Fluorane compound and recording material containing the same compound |
| abstract | PURPOSE: To rapidly form a color at low temp. by using a specific fluoran compound is a recording material as a color forming compound. n CONSTITUTION: A fluoran compound represented by formula (I) is used as a color forming compound. This compound can be prepared by reacting a benzoic acid derivative represented by formula (II) and a diphenylamine derivative represented by formula (III) in the presence of a dehydrating condensation agent, for example, conc. sulfuric acid, fuming sulfuric acid, phosphorus pentoxide or anhydrous aluminum chloride and making the reaction solution alkaline. Dehydrating condensation reaction is usually performed at 0-100°C for several hr - 100hr. The benzoic acid derivative represented by the formula (II) can be prepared by reacting 3-N-n-butyl-N-sec-butylaminophenol and phthalic anhydride in a solventless state or in a solvent such as benzene, toluene or xylene. In the formula (III) representing the diphenylamine derivative, R is a lower alkyl group such as a methyl or ethyl group. n COPYRIGHT: (C)1991,JPO&Japio |
| priorityDate | 1989-07-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 42.