| abstract |
(57) [Summary] [PROBLEMS] To provide a hydrophilic surface treatment aqueous solution, a hydrophilic surface treatment method, and a hydrophilic surface treatment film, which form a film having sustained hydrophilicity and excellent processability. [Constitution] The polyoxyalkylene chain has a solid content of 10 It is an aqueous hydrophilic treatment solution containing, as a main component, an aqueous polymer compound and a specific aqueous resin, which are contained by weight% or more. [Effect] It is possible to form a film that suppresses the generation of unpleasant odors, as well as imparting processability, good hydrophilicity, and hydrophilic sustainability to the surface of an aluminum-based metal used for aluminum fins of heat exchangers. Becomes |