POLYURETHANE RESIN SOLUTION AND FILM-LIKE MEMBER

Provided is a polyurethane resin solution that has excellent solution stability, and that has excellent thermal softening resistance, and small variations in physical properties such as modulus at temperatures ranging from low to high, and is useful as a resin solution (dope) which can be used to pr...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OYAMA MASASHI, KANNO RISA, SATO HARUMASA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE ADHESIVES AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS COMPOSITIONS BASED THEREON CORRECTING FLUIDS DEAF-AID SETS DYES ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY FILLING PASTES FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR INKS LAUNDERING LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES PUBLIC ADDRESS SYSTEMS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING TREATMENT OF TEXTILES OR THE LIKE USE OF MATERIALS AS ADHESIVES USE OF MATERIALS THEREFOR WALL, FLOOR OR LIKE COVERING MATERIALS, e.g. LINOLEUM,OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF AFIBROUS WEB COATED WITH A LAYER OF MACROMOLECULARMATERIAL WOODSTAINS WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	Provided is a polyurethane resin solution that has excellent solution stability, and that has excellent thermal softening resistance, and small variations in physical properties such as modulus at temperatures ranging from low to high, and is useful as a resin solution (dope) which can be used to produce, by solution casting, a solid film-like member which is made of a polyurethane resin and which is to be provided in a loudspeaker for a mobile device which is expected to be used in a wide temperature range. This polyurethane resin solution is used to produce, by solution casting, a solid film-like member which is to be provided in a loudspeaker for a mobile device. This polyurethane resin solution contains a polyurethane resin, and an organic solvent in which the polyurethane resin is dissolved. The polyurethane resin consists only of a constituent unit (A) derived from a polyol such as polyether polyol, a constituent unit (B) derived from a short-chain diol, and a constituent unit derived from an aromatic d