http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-1214311-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_7503f2fa81a73988d9219717e7c7aee1 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07D311-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B5-23 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B7-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-96 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07D311-94 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B5-23 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K9-02 |
| filingDate | 2000-09-15-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6ec404ac04e99780bc836b0ba5d28102 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d9ad64754792b3b7b376b7b67c3352b8 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_38eccf920d917cdfa18b65ee714e2b2d http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_e391ede08c851def1bc51494a8562e03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_3308fefc7acb32f33e01c606879a0338 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_127bba895c06090d4fe43eceb8154e07 |
| publicationDate | 2002-06-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-1214311-A1 |
| titleOfInvention | Novel indeno-fused photochromic naphthopyrans |
| abstract | Described are novel photochromic indeno-fused naphthopyran compounds, examples of which include naphthopyran compounds having a substituted or unsubstituted indeno group, the 2,1 positions of which are fused to the naphtho portion of the naphthopyran. Also present on the naphthopyran are moderate to strong electron donor substituents at the number 6- and 7-positions and optionally at the 8-position of the pyran ring or a cyclic group fused to the h side of the naphtho portion and weak to moderate electron donor substituents at the 3-position of the pyran ring. Certain substituents may also be present at the number 5, 8, 9, 10, 11, 12, or 13 carbon atoms of the compounds. These compounds have a rating of at least 80 in the Relative DELTA OD at Saturation Test and may be represented by graphic formula (I): Also described are polymeric organic host materials that contain or that are coated with such compounds. Optically clear articles such as ophthalmic lenses or other plastic transparencies that incorporate the novel naphthopyran compounds or combinations thereof with complementary photochromic compounds, e.g., certain other naphthopyrans, benzopyrans, and spiro(indoline) type compounds, are also described. |
| priorityDate | 1999-09-17-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
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