Process for alkali saponification of polymer film
AssigneeFuji Photo Film Co., Ltd.
InventorsNaoyuki Kawanishi, Kazuhiko Fujiwara, Hitoshi Namikawa, Takahiro Moto, Yutaka Tamura
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Abstract
A process for alkali saponification of polymer film is disclosed. The process comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, and washing away the alkaline solution from the film.
Claims18
A process for alkali saponification of polymer film, which comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, and washing away the alkaline solution from the film.
A process for alkali saponification of polymer film, which comprises the steps of applying solution of an alkali onto a polymer film having a temperature of not lower than room temperature, keeping the temperature of the film not lower than the room temperature, and washing away the alkaline solution from the film.
A process for alkali saponification of polymer film, which comprises the steps of heating a polymer film at a temperature of higher than room temperature, applying solution of an alkali onto the polymer film, keeping the temperature of the film not lower than the room temperature, and washing away the alkaline solution from the film.
Dependencies are inferred from the claim text.