http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57195685-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_24aca9ded2638ea793d05360dde7a4a0 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B41M5-3275 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 |
| filingDate | 1981-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4015d155f5bfb945e37cf8689706073c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a3ceb565d56660e6cf9d3801ccb1849b |
| publicationDate | 1982-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-S57195685-A |
| titleOfInvention | Recording paper |
| abstract | PURPOSE:To provide a heat-sensitive recording paper which forms a color with a black color tone when in contact with an acidic substance and provides a recorded image having excellent resistance to light and water, by providing a specified derivative of fluoran on a base as an electron-donative color former. CONSTITUTION:A derivative of fluoran of formulaI(where R<1> is alkenyl; R<2> is 2-8 C alkenyl, 1-8 C alkyl, cycloalkyl, phenylalkyl or the like; R<3> is 1-8 C alkyl, cycloalkyl, 3-10 C alkoxyalkyl, phenylalkyl, carbamidoethyl or the like) (e.g., a compound of formula II) is provided on a base as an electron-donative color former together with a film-forming agent or the like to obtain the objective recording paper. The compound of formulaIis obtained, for example, by bringing a compound of formula III and a derivative of phenol of formula IV (where R is H, 1-4 C alkyl) into reaction by using a dehydrating-condensing agent at a temperature of -5-90 deg.C, followed by pouring the reaction product into water and treating with an alkali to crystallize the objective compound. |
| priorityDate | 1981-05-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 20.