Method of producing porous molded body
AssigneeFUJIFILM Corporation
InventorsKeisuke Oku, Koju Ito, Hiroshi Yabu, Yoshiaki Uchida
Life of this patent
Estimating the term…
Abstract
A molding device produces a porous film from a molding material which is an emulsion. In a case where a volume of a dispersed phase is X1 and a volume of a continuous phase is X2, the molding material has a value of X1/(X1+X2) within a range of 0.5 or more and 0.9 or less. In the molding material, a specific gravity of the dispersed phase is greater than a specific gravity of the continuous phase. The molding material includes a water phase containing a curable compound as the continuous phase, and forms a liquid film on a support. Thereafter, the curable compound in the liquid film is cured. After curing, the dispersed phase is removed.
Claims17
A method of producing a porous molded body from an emulsion including a continuous phase and a dispersed phase, the method comprising:
- a film forming step of forming a film on a support from the emulsion including a water phase containing a curable compound as the continuous phase;
- a curing step of curing the curable compound after the film forming step;
- and
- a dispersed phase removal step of removing the dispersed phase of the film after the curing step,
- wherein in the emulsion, in a case where a volume of the dispersed phase is X1 and a volume of the continuous phase is X2, a value of X1/(X1+X2) is within a range of 0.5 or more and 0.9 or less, and a specific gravity of the dispersed phase is greater than a specific gravity of the continuous phase,
- the method further comprising:
- a base production step of discharging a first liquid forming the dispersed phase as a liquid droplet in a flow of a second liquid forming the continuous phase from a distal end of a tubular member in a direction of the flow of the second liquid to produce an emulsion base having a value of X1/(X1+X2) smaller than that of the emulsion;
- and
- an uneven distribution step of unevenly distributing the dispersed phase in the emulsion base to generate an uneven distribution region having a value of X1/(X1+X2) within a range of 0.5 or more and 0.9 or less in the emulsion base,
- wherein in the film forming step the uneven distribution region generated in the emulsion base is used as the emulsion.
Dependencies are inferred from the claim text.