http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2143247-C1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_746cbc1e3f7720636576b4bab5ff2168 http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_86d681fa4179ba38844ea334fe621080 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L27-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61F2-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/A61L27-18 |
| filingDate | 1999-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| grantDate | 1999-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_1e928fa2739f238d6d731353c31c48fb http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_c34b8278e9903c65c01447f9eeceacfd http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_76c87e844cbf1ab91a098bbf08055f5b http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_f6af713731053e65642914e3ef6f67d5 |
| publicationDate | 1999-12-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | RU-2143247-C1 |
| titleOfInvention | Artificial elastic lens |
| abstract | FIELD: ophthalmology. SUBSTANCE: artificial elastic lens based on composition with low shrinkage factor (no higher than 1%) and refraction coefficient higher than 1.48, allowing polymerization to progress all over the space of mold to give products without optical imperfections and approaching desired shape as close as possible, contains optical component and carrier of photopolymerization material. The latter is based on composition made from mixture of: oligourethane methacrylate having following structure: , where n = 10-20, M methacrylate ester residue of formula -(CH 2 ) m -O-(CO)-C(CH 3 )=CH 2 with m = 1-10 (base material); glycidyl acrylates of formula wherein M is methacryl radical and n = 1-10 (10-30 wt %); alkyl acrylates of formula CH 3 (CH 2 ) n -O-C(O)-C(CH 3 )=CH 2 wherein n = 0-8 (0-25 wt %); polyalkylene glycol monoacrylates of general formula H 2 C=C(CH 3 )-C(O)-[OCH 2 CH(CH 3 )] n -OH with n = 1-10 (5-15 wt %); and photoinitiator (0.5- 1.5 wt %), which can be 2,2-diisopropoxyacetophenone or 2-hydroxy-2- methyl-1-phenylpropane-1-one. When irradiated by DRT-250 lamp for 2- 5 min, composition gives elastic polymer material with transmission coefficient 95% in the region of 380-900 nm wavelengths. Variation of composition constituents within specified limits and also variation of their molecular weights enables manufacturing lens with controlled rigidity of their haptic parts and varying refraction coefficient of polymer material. EFFECT: enabled manufacturing artificial lens with various simplified properties. 1 tbl, 8 ex |
| priorityDate | 1999-04-02-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 27.