Process for producing polymer electrolyte emulsion

C - Chemistry – Metallurgy – 08 – J

Patent

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Details

C08J 3/07 (2006.01) H01B 13/00 (2006.01) H01M 8/02 (2006.01) H01M 8/10 (2006.01)

Patent

CA 2656691

Disclosed is a method for producing a polymer electrolyte emulsion comprising the following steps (1) and (2). Step (1): a step for preparing a polymer electrolyte solution having a polymer electrolyte concentration of 0.1-10% by weight by dissolving a polymer electrolyte into a solvent containing a good solvent of the polymer electrolyte. Step (2): a step for mixing the polymer electrolyte solution obtained in the step (1) with a poor solvent of the polymer electrolyte at a ratio of 4-99 parts by weight of the poor solvent to 1 part by weight of the polymer electrolyte solution. Also disclosed is a method for producing a polymer electrolyte emulsion, wherein a polymer electrolyte dispersion obtained by dispersing polymer electrolyte particles into a dispersion medium is subjected to separation by a membrane.

L'invention concerne un procédé de production d'une émulsion d'électrolyte polymère comprenant les étapes (1) et (2) suivantes. L'étape (1) consiste à préparer une solution d'électrolyte polymère contenant une concentration d'électrolyte polymère de 0,1 à 10% en poids par dissolution d'un électrolyte polymère dans un solvant contenant un bon solvant de l'électrolyte polymère. L'étape (2) consiste à mélanger la solution d'électrolyte polymère obtenue au cours de l'étape (1) avec un mauvais solvant de l'électrolyte polymère selon un rapport de 4-99 % en poids du mauvais solvant et de 1% en poids de la solution d'électrolyte polymère. L'invention concerne également un procédé de production d'une émulsion d'électrolyte polymère, dans lequel une dispersion d'électrolyte polymère obtenue par dispersion de particules d'électrolyte polymère dans un milieu de dispersion est soumise à une séparation par une membrane.

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