http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-2816070-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_696ca0ae93d5cf5a686273601361781f |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-04 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-041 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G75-08 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G75-08 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04 |
| filingDate | 2013-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f558582b5d4a9cddca0b9ab9bf8eff0c http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_a2bdefc01295d6f911edd32c7a317da9 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_57c3749001e1f1ee8f1e843bfd1986b7 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d16d87369d2c5015d67bdb693bfe37e4 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d5faf8f8fa80b1bb33e75b7662962c68 |
| publicationDate | 2014-12-24-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-2816070-A1 |
| titleOfInvention | Polymerizable composition for optical material, method for producing same, and method for producing optical material |
| abstract | By using a method for producing a composition for an optical material using (a) sulfur, (b) a compound having two intramolecular episulfide groups, (c) a compound having one or more (preferably two) SH groups, and (d) an amine compound having a specific structure, in which compound (a) and compound (c) are pre-polymerized in the presence of compound (b) using compound (d) as the pre-polymerization catalyst, the present invention provides a polymerizable composition for an optical material in which the viscosity elevation speed during pre-polymerization is slow and the reaction temperature is approximately room temperature, and that has a low viscosity and shows little increase in viscosity. By means of another embodiment of the present invention, it is possible to produce an optical material that has excellent mold release characteristics but has substantially no striae by polymerizing (a) sulfur, (b) a compound having two intramolecular episulfide groups, and (c) a compound having one or more SH groups in the presence of (d) a hindered amine catalyst having a specific structure. |
| priorityDate | 2012-02-14-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 352.