http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S57195687-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/C09B11-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-327 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B41M5-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B11-28 |
| 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-S57195687-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 1-8 C alkyl; R<2> is 3-8 C alkyl; R<3> is 2-8 C alkenyl or a phenylalkyl which may be subst. by methyl or halogen on the benzene ring) (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. EFFECT:Storage stability and color-forming property are enhanced. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-S62294647-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-H0248538-B2 |
| 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: 25.