| abstract |
One aspect of the present invention includes at least one selected from the group consisting of a carboxylic acid compound represented by the following formula (1), a carboxylic acid anhydride represented by the following formula (2), and trimellitic anhydride. It is an aqueous composition characterized by containing a basic compound and water. [Chemical 1] In the formula (1), R represents an alkanediyl group, a vinylene group, or a benzene ring having 2 to 4 carbon atoms, and a represents 2 or 3. [Chemical 2] In the formula (2), R represents an alkanediyl group, a vinylene group, or a benzene ring having 2 to 4 carbon atoms. |