| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_e1badcf0490e77779da53a61df97e4b5 |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K2211-1018
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-1545
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C2202-16
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00442
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2075-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29K2995-0018 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K5-1545
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00865
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00009
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-324
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-6685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00653
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-6651
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D175-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02C7-102
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-44 |
| classificationIPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29K75-00 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-32
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K9-02
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-10
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-66
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29D11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-75
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K5-1545
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D175-04 |
| filingDate |
2018-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2021-03-02^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ebf4a66c4bd5348c6d2d738d3d1fe168
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_6d894fda89b6b71dd03feb610e8868e3 |
| publicationDate |
2021-03-02^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
US-10934480-B2 |
| titleOfInvention |
Optical articles comprising photochromic poly(urea-urethane) |
| abstract |
A process for producing a photochromic eyewear lens. In one embodiment at least a layer of modified photochromic poly(urea-urethane) is formed by combining photochromic material and the reaction product of a polyurethane pre-polymer and a mixture of diethyltoluene diamine and one or more polyols, plus catalyst. The mixture comprises both NH2 and OH reactive groups, with at least 0.04 equivalent weights of OH reactive species available for reaction with each 1.0 equivalent weight of excess NCO reactive species available in the pre-polymer. The lens comprising the modified photochromic poly(urea-urethane) can exhibit faster fade-back rates and better photochromic performance than lenses with non-modified poly(urea-urethane). |
| priorityDate |
2017-03-01^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |