http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-964245-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_8857d9285f4a393618523d052bf765df |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B2111-00241 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B18-027 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C01B33-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01B3-025 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C04B20-002 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01Q1-42 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q1-42 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C01B33-145 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01B3-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B18-02 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B30-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C04B20-00 |
| filingDate | 1962-10-11-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1964-07-22-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-964245-A |
| titleOfInvention | Insulating material and method of making same |
| abstract | A silica insulating material having a dielectric loss tangent below 0.002 at 8600 megacycles is obtained by preparing a feed solution by mixing a minor amount of a polyhydroxy organic compound containing at least three carbon atoms per molecule and capable of providing a material which will form a gas at 2300-3000 DEG F., for example glycerine, butane-diols, polypropylene glycol, or hexane triols, with a major amount of a silica sol containing less than 0.4% wt. of alkali metal calculated as the oxide, drying to a substantially dry state at 250-600 DEG F., grinding to a particle size below 100 m , introducing these particles into a furnace at 2300-3000 DEG F. whereby the particles are converted into discrete hollow microspheres of diameter 5000 m or less, at least 40% of which have smooth hole-free walls, and thereafter removing these microspheres from the furnace and recovering. In an example the furnace was a conventional propane fired updraught furnace, the product issuing from the top of the furnace being cooled by a water-spray and recovered in a cyclone. The mass has an average true density of 1.0 to 1.2 g./c.c. |
| priorityDate | 1961-10-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 34.