http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-19990065291-A
Outgoing Links
| Predicate | Object |
|---|---|
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J2367-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K2201-003 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L2666-68 |
| classificationCPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L67-03 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08K3-01 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08L25-06 http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/C08J5-18 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C08J5-18 |
| filingDate | 1998-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationDate | 1999-08-05-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | KR-19990065291-A |
| titleOfInvention | Method for producing biaxially oriented polyester film for magnetic recording medium |
| abstract | 1. TECHNICAL FIELD OF THE INVENTIONn n n The present invention relates to a method for producing a polyester film used as a magnetic recording medium.n n n 2. The technical problem to be solved by the inventionn n n Compared to the conventional calcium carbonate, the present invention has an excellent effect on controlling the surface properties of polyester film, does not generate voids, has excellent dropout characteristics when manufactured with magnetic recording tape, and has excellent repeat durability and high-speed driving. It is to provide a polyester film having excellent abrasion resistance.n n n 3. Summary of Solution to Inventionn n n The present invention for solving the above technical problem is a method for producing a polyester film by adding a lubricant to polyethylene terephthalate, the lubricant is added to the polyester divided into A particles, B particles and C particles, but Particle A uses 0.01% to 4% of crosslinked polystyrene small particles having an average particle diameter of 0.01 µm to 0.6 µm coated with ultrafine alumina or silica within 5 nm to 50 nm on the surface of the lubricant. 0.01% to 0.1% of crosslinked polystyrene large particles having an average particle diameter of 0.7 μm to 3.0 μm coated with ultra-fine alumina or silica within 5 nm to 50 nm on the surface, and C particles are delta type or alpha having Mohs hardness of 6 or more. It is selected from type alumina or ultra-fine spherical silica, and can be solved by producing an average particle diameter of 0.005 µm to 0.15 µm and adding an amount of 0.01% to 4%.n n n 4. Important uses of the inventionn n n The present invention has a use as a method for producing a polyester film used as a magnetic recording medium. |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/KR-100492329-B1 |
| priorityDate | 1998-01-12-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 44.