http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0976727-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_44ff3005508304394801e265e503b811 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C07C323-25 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-775 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-3876 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-77 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-38 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C07C323-25 |
| filingDate | 1999-07-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_730785d204cc5b1cbda8dcce382e2a01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6fba93b9ff4f6a48c433d75677a344a4 |
| publicationDate | 2000-02-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0976727-A1 |
| titleOfInvention | Polyisocyanate compound, process for producing the same and optical resin materials using the same |
| abstract | Provided are novel polyisocyanate compounds of the generalnformula (I) (wherein Z represents a direct bond or -CH 2 -)n nwhich are useful as starting compounds for optical resinnmaterials having excellent optical characteristics such asna high refractive index and a low dispersion, and a processnfor producing this compound at good efficiency. n Further provided is a process for producing the desirednpolyisocyanate compounds through a tricarboxylic acid esternand a tricarbonyl hydrazide using a dihalogeno-aliphaticncarboxylic acid lower alkyl ester and a thioglycolic acidnlower alkyl ester as starting materials. n According to a second process the compounds (I) wherein Znis -CH 2 - are prepared through a tricarboxylic acid esternand a tricarbonyl hydrazide using a propiolic acid lowernalkyl ester and a thioglycolic acid lower alkyl ester asnstarting materials. |
| priorityDate | 1998-07-28-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
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