Para-type total aromatic polyamide film, its production method, and a separator containing the film.

摘要

PROBLEM TO BE SOLVED: To provide a para-type total aromatic polyamide film having a high porosity and a high breaking strength without using hard inorganic particles which are insoluble in a polymer solution. SOLUTION: A para-type total aromatic polyamide polymer solution contains an alkali metal salt and / or an alkaline earth metal salt in the range of 0.5 to 10.0% by weight based on the weight of the polymer, and then the polymer solution. To form a film. [Selection diagram] None