Surface material for key pad use
PURPOSE: Provided is a surface material for keypads used in various information terminals, which has excellent soft touch feel, does not cause yellowing and maintains physical properties for a long time. CONSTITUTION: The surface material(1) for keypads(2) comprises a thermoplastic polyurethane resi...
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| creator | NAKANO SEISHI ISE NOBURO |
| description | PURPOSE: Provided is a surface material for keypads used in various information terminals, which has excellent soft touch feel, does not cause yellowing and maintains physical properties for a long time. CONSTITUTION: The surface material(1) for keypads(2) comprises a thermoplastic polyurethane resin prepared at least from a polyol and an isocyanate selected from the group consisting of hexamethylene diisocyanate and hydrogenated diphenylmethane diisocyanate. The polyol includes polycarbonate ester polyol. The thermoplastic polyurethane resin may be present in the form of a film having a thickness of 0.03 mm to 0.5 mm. |
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CONSTITUTION: The surface material(1) for keypads(2) comprises a thermoplastic polyurethane resin prepared at least from a polyol and an isocyanate selected from the group consisting of hexamethylene diisocyanate and hydrogenated diphenylmethane diisocyanate. The polyol includes polycarbonate ester polyol. 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| subjects | AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G BASIC ELECTRIC ELEMENTS CHEMISTRY COMPOSITIONS BASED THEREON ELECTRIC SWITCHES ELECTRICITY EMERGENCY PROTECTIVE DEVICES GENERAL PROCESSES OF COMPOUNDING MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS RELAYS SELECTORS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP |
| title | Surface material for key pad use |
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