TWI813545B

Provided is an edge material of a vibration plate for an electro-acoustic transducer, containing a crystalline polyimide resin (A) comprising a tetracarboxylic acid component (a-1) and a diamine component (a-2) comprising mainly an aliphatic diamine. In addition, provided is a polyimide resin compos...

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Bibliographic Details
Main Author HASUIKE, MASAYASU
Format Patent
LanguageChinese
Published 01.09.2023
Subjects
AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
DEAF-AID SETS
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
GENERAL PROCESSES OF COMPOUNDING
LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKEACOUSTIC ELECTROMECHANICAL TRANSDUCERS
MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
PUBLIC ADDRESS SYSTEMS
THEIR PREPARATION OR CHEMICAL WORKING-UP
WORKING-UP
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Summary:Provided is an edge material of a vibration plate for an electro-acoustic transducer, containing a crystalline polyimide resin (A) comprising a tetracarboxylic acid component (a-1) and a diamine component (a-2) comprising mainly an aliphatic diamine. In addition, provided is a polyimide resin composition containing a polyetherimide resin (B) and the crystalline polyimide resin (A) comprising a tetracarboxylic acid component (a-1) and an aliphatic diamine component (a-2). The polyimide resin composition is characterized in that the content ratio of the polyetherimide resin (B) and the crystalline polyimide resin (A) is such that (B)/(A) = 1/99 to 99/1 on a mass basis.
Bibliography:Application Number: TW20176130133