BIAXIALLY ORIENTED POLYESTER FILM AND METHOD FOR PRODUCING THE SAME
PROBLEM TO BE SOLVED: To prepare a biaxially oriented polyester film substantially free from deposits of oligomers on the surface of the film and excellent in magnetic recording characteristics obtained when used as a substrate for magnetic recording media and optical characteristics obtained when u...
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| creator | KUSUME HIROSHI KOSUGE MASAHIKO |
| description | PROBLEM TO BE SOLVED: To prepare a biaxially oriented polyester film substantially free from deposits of oligomers on the surface of the film and excellent in magnetic recording characteristics obtained when used as a substrate for magnetic recording media and optical characteristics obtained when used as an optical substrate and gas barrier property, and to provide a method for producing the film. SOLUTION: The biaxially oriented polyester film is composed of a polyester containing a phosphorus compound of 125-500 ppm expressed in terms of phosphorus atomic weight and having ≥0.50 and ≤0.75 intrinsic viscosity and has ≤0.7 mg/m2amount of oligomers deposited on the surface. A vapor deposited processed film is obtained by providing a vapor deposited layer at least on one side. COPYRIGHT: (C)2005,JPO&NCIPI |
| format | Patent |
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SOLUTION: The biaxially oriented polyester film is composed of a polyester containing a phosphorus compound of 125-500 ppm expressed in terms of phosphorus atomic weight and having ≥0.50 and ≤0.75 intrinsic viscosity and has ≤0.7 mg/m2amount of oligomers deposited on the surface. A vapor deposited processed film is obtained by providing a vapor deposited layer at least on one side. 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SOLUTION: The biaxially oriented polyester film is composed of a polyester containing a phosphorus compound of 125-500 ppm expressed in terms of phosphorus atomic weight and having ≥0.50 and ≤0.75 intrinsic viscosity and has ≤0.7 mg/m2amount of oligomers deposited on the surface. A vapor deposited processed film is obtained by providing a vapor deposited layer at least on one side. COPYRIGHT: (C)2005,JPO&NCIPI</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS GENERAL PROCESSES OF COMPOUNDING LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS WORKING-UP |
| title | BIAXIALLY ORIENTED POLYESTER FILM AND METHOD FOR PRODUCING THE SAME |
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