http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-2716041-A1
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_c3070783318d4f17db6ad97e418a5503 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C09K11-56 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C09K11-56 |
| filingDate | 1977-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_967d87b5256b2869b1bcff7bd0b5a43e http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_4a9527cd123d0cb70d2c0dbea6c0053a http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_b29b219c9f7e5121cb5d6781250a7cbf |
| publicationDate | 1979-02-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | DE-2716041-A1 |
| titleOfInvention | METHOD FOR TREATING A LUMINOUS SURFACE |
| abstract | The powdered luminophore (a) is mixed with a lead-free glass forming oxide and/or salt mixt., (b), followed by heating (c) in which impurities are picked up by the glass phase, which is then removed. Heating (c) is pref. at 100-1000 degrees C, esp. 350-450 degrees C., for 1/4-4 h., esp. 1 hr.; and mixt. (b) is pref. B2O3, V2O5, K2CO3, Na2CO3; or K2CO3, Na2CO3, Na2H4O7, ZnO; other oxide mixts.; or NaCl, ZnCl2, K4P2O7, Na4P2O7; and a glass solder may be added to mixt. (b). The pref. wt. ratio (R) of a:b is between 6:1 and 2:1, esp. 5:1 to 3:1. The luminophors (a) are pref. pretreated by wet chemical methods; and are e.g. ZnCdS:Cu; ZnS:Ag; Y2O5S:Eu; Y2O2S:Sm; La2O2S:Eu:or Gd2O2S:E. Used for recovery of luminophors for use in cathode ray tubes, where the invention removes silicates, borates, phosphoates and/or heavy metals. |
| priorityDate | 1977-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 51.