| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c379b0d1b49897f8d47533c391a78599 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P1-382
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G02B1-043
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P1-5257
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/D06P3-348
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/B29D11-00317 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P3-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P1-382
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/B29D11-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-06
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02B1-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P1-52
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-20
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08F20-18
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/D06P3-00
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G02C7-04
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09B5-44 |
| filingDate |
1993-10-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate |
2005-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_d96694734b6d41725430b11c08bcda13
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_2892204d5314decd2bb1af16491a3d1c |
| publicationDate |
2005-06-21-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
CA-2108998-C |
| titleOfInvention |
Method for preparing tinted contact lens |
| abstract |
An improved method is disclosed for imparting a tint or color to a soft, hydrogel contact lens by uniformly dispersing a dye throughout the lens. The dye is a water-soluble halotriazine dye. The dye is reacted with a hydrophilic monomer to prepare a reactive dye containing predominantly monofunctionality. The monomer is then subjected to polymerization in the presence of a homogeneous solution of the reactive dye in the monomer under conditions to yield the hydrophilic polymer from which the lens is formed. The dye becomes bonded to the polymer during polymerization. The finished lens does not require soaking in an aqueous solution of the dye to impart the desired tint or color to the lens. Additionally, the dye uniformly dispersed throughout the lens according to the improved method does not leach out of the lens or migrate within the lens. Furthermore, the lens does not need to be washed with aqueous base to bond the dye to the lens. |
| priorityDate |
1992-10-26-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |