| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_6ef38145f92d6f66da613a292760fb93 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D487-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D471-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-685 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D471-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D487-10 |
| filingDate |
1982-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_30d06956cc40e17b563cff5c295b4490
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3c7f9b8f85a3d9e1d539d5e5c4af90af
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a33225c9dcdcd3342c56c96aedbfd578 |
| publicationDate |
1983-12-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-3220257-A1 |
| titleOfInvention |
PHOTOCHROME SPIRO (1.8 A TETRAHYDROINDOLIZINE), METHOD FOR THE PRODUCTION AND THEIR USE IN RADIATION-SENSITIVE MATERIALS |
| abstract |
Novel photochromic compounds of the general formula <IMAGE> in which one of the dashed bonds is a single bond, and in which R<3> preferably denotes a radical for completing a dibenzocyclopentadiene ring, R<1> and R<2> are electron-withdrawing groups and Y is preferably a group CH or CR<8> where R<8> = methyl, phenyl or thiophene. Z can be CH or N. Apart from the radicals shown, the C atoms on the ends of the single bond each carry a hydrogen atom. The compounds change colour reversibly on irradiation with the formation of strong shades. They are suitable for radiation-sensitive materials, for example for measurement, recording and storage purposes. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4931220-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5698020-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4983324-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-8807702-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-2016067069-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-3521432-A1 |
| priorityDate |
1982-05-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |