http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2042929-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_1aeb547e41bcced0c8569159a97514be |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/G11B5-73935 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-733 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/G11B5-73 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08L67-00 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-26 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-24 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08K3-00 |
| filingDate | 1980-01-25-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1980-10-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | GB-2042929-A |
| titleOfInvention | Magnetic recording tape |
| abstract | A magnetic recording tape comprising a polyethylene terephthalate substrate and a magnetic material-containing layer closely adhered onto the substrate, which tape exhibits a low dropout number increase and a small initial dropout number. The polyethylene terephthalate substrate satisfies the formula: 23.7 A-1.351H2-1231.97</=20 wherein A is the average particle size of the polyethylene terephthalate crystals, and H2 is the average number of projections present in a unit area of 1 mm2 on the surface of the substrate, which projections have a height of from 0.54 to 0.80 micron. The substrate having the surface projections is prepared by incorporating projection-forming materials into the reaction mixture for forming the polyethylene terephthalate or into the polyethylene terephthalate. As the projection- forming material, calcium carbonate is used in combination with calcium acetate and/or kaolin. The proportion of calcium carbonate is less than about 25 weight % based on the total weight of calcium carbonate plus calcium acetate and/or kaolin. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0158961-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0158960-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-4876137-A http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0158961-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0229346-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0139203-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0077549-A3 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0077549-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0108593-A1 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0158960-A2 http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0139203-A2 |
| priorityDate | 1979-02-01-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 49.