| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_b637f9f45afd69585579aa44456b785c |
| classificationCPCAdditional |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31598
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10T428-31551 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08G18-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09D175-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G03C1-685 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D5-29
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G03C1-685
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08G18-44
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09D175-04 |
| filingDate |
2001-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_80706133bf65e9013be0a820c1ea471a
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_cef72979a4d1ca260c7378bc56ca43b7
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d740497f88aac28aaab1ece87bfdf803
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f908be353a1e1c3147cf9c50aa54b5f0 |
| publicationDate |
2001-08-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2397969-A1 |
| titleOfInvention |
Photochromic polyurethane coating and articles having such a coating |
| abstract |
Described are photochromic polyurethane coatings having improved durability as demonstrated by reduced swelling upon exposure to alcoholic solvents in the Percent Swelling Test. The coatings are prepared using polycarbonate polyols alone or in combination with different polyols as the source of hydroxyl groups. Also described are articles having such coatings. The coatings exhibit a Fischer microhardness of from 50 to 150 Newtons per mm2 and good photochromic properties. |
| priorityDate |
2000-01-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |