http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0020668-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_f4a33d3a18128d11ec15d6defa69dccf |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y10S501-902 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C03C3-247 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C3-16 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C03C3-247 |
| filingDate | 1980-07-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_24ff8a7f364a5ed73045271660d5e495 http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8c19ba5d6205fe9991e5490f4017cdf6 |
| publicationDate | 1981-01-07-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | EP-0020668-A1 |
| titleOfInvention | METHOD FOR PRODUCING A BERYLLIUM-FREE FLUOROPHOSPHATE GLASS. |
| abstract | A process for preparing a fluorophosphate glass without traces of beryllium having a refractive index between 1.40 and 1.46, an Abbe number ve value between 85 and 94 and a dispersion value is described. abnormal partial, high and positive expressed by + (Alpha) ve and located between 19 and 28. The process is characterized in that the initial mixture, containing as components in particular metaphosphates, fluorides, as well as fluoborates of alkali in predetermined% -ages by weight, is subjected to melting as follows: heating the crushed mixture to a temperature of 700 to 800 C, refining of the molten bath at a temperature of 900 to 1000 C during a period of 8 to 25 minutes, homogenization of the molten bath at a temperature of 900 to 1000 C in the interval of 5 to 15 minutes, lowering to a molding temperature, between 575 and 650 C and poured into molds, in particular of aluminum, preheated around 320 C. |
| priorityDate | 1978-12-20-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 45.