Photocurable composition, micropattern-formed product and its production process

A process for producing a micropattern-formed product, which comprises

• carrying out the following steps A, B, C and as the case requires, step D, in this order with a photocurable composition comprising from 50 to 98 mass % of a monomer containing no fluorine atom and having a viscosity at 25° C. of from 0.1 to 100 mPa·s, from 0.1 to 45 mass % of a fluoromonomer, from more than 0.1 to 20 mass % of a fluorinated surfactant and/or a fluoropolymer and from 1 to 10 mass % of a photopolymerization initiator, and contains substantially no solvent, a substrate and a mold having a micropattern on its surface to obtain a micropattern-formed product having a micropattern on its surface or such a micropattern-formed product integrated with the substrate:
• step A:
• a step of sandwiching and pressing the photocurable composition between the surface of the substrate and the patterned surface of the mold;
• step B:
• a step of curing the photocurable composition by light irradiation to obtain a micropattern-formed product comprising a cured product having the micropattern of the mold transferred on its surface;
• step C:
• a step of separating at least one of the mold and the substrate from the cured product to obtain a micropattern-formed product, a micropattern-formed product integrated with the substrate or a micropattern-formed product integrated with the mold;
• and
• step D:
• a step of separating the micropattern-formed product from the mold in a case where the micropattern-formed product integrated with the mold is obtained in the step C.

A process for producing a micropattern-formed product, which comprises carrying out the following steps E, F, G and as the case requires, step H, in this order with a photocurable composition comprising from 50 to 98 mass % of a monomer containing no fluorine atom and having a viscosity at 25° C. of from 0.1 to 100 mPa·s, from 0.1 to 45 mass % of a fluoromonomer, from more than 0.1 to 20 mass % of a fluorinated surfactant and/or a fluoropolymer and from 1 to 10 mass % of a photopolymerization initiator, and contains substantially no solvent, a substrate and a mold having a micropattern on its surface to obtain a micropattern-formed product having a micropattern on its surface or such a micropattern-formed product integrated with the substrate:

• step E:
• a step of pressing the photocurable composition between the surface of the substrate and the patterned surface of the mold;
• step F:
• a step of separating the mold from the photocurable composition to obtain a molded product of the photocurable composition having the micropattern of the mold transferred on its surface, integrated with the substrate;
• step G:
• a step of curing the molded product of the photocurable composition by light irradiation to obtain a micropattern-formed product comprising a cured product having the micropattern of the mold transferred on its surface, integrated with the substrate;
• and
• step H:
• a step of separating the micropattern-formed product from the substrate.