Polymer compound, binder resin, composition for...

C - Chemistry – Metallurgy – 08 – G

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C08G 18/10 (2006.01) C08L 75/04 (2006.01) H01B 1/06 (2006.01) H01B 1/12 (2006.01) H01G 9/00 (2006.01) H01M 4/62 (2006.01) H01M 10/40 (2006.01)

Patent

CA 2332768

A polyurethane polymer compound having a high dielectric constant, an ability of dissolving an ion-conductive salt at high concentration therein, and a high adhesion owing to the introduction of a substituent of a large dipole moment into polyurethane molecules, allowing the electrodes and the electrolyte to be in good contact with one another, and exhibiting as high an interface impedance as an electrolyte solution does is disclosed. A binder resin containing such a polymer compound, a composition for ion-conductive polymer electrolytes mainly consisting of such a polymer compound and an ion- conductive salt and having a high ionic conductivity and a high adhesion, and a secondary cell comprising them are also disclosed.

L'invention concerne un composé polymère polyuréthanne caractérisé par une constante diélectrique élevée, un pouvoir de dissolution vis-à-vis d'un sel conducteur d'ions à des concentrations élevées, et une forte adhérence due à l'introduction d'un substituant d'un moment dipolaire élevé dans les molécules de polyuréthanne, ce qui permet l'obtention d'un contact satisfaisant entre les électrodes et l'électrolyte. Ledit composé présente, en outre, une impédance d'interface aussi élevée que celle d'une solution d'électrolyte. L'invention concerne également une résine liante renfermant ledit composé polymère, une composition pour électrolytes polymères conducteurs d'ions renfermant principalement ledit composé polymère et un sel conducteur d'ions, caractérisée par une haute conductivité ionique et une forte adhérence. L'invention concerne enfin une cellule secondaire renfermant lesdits constituants.

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