Patent ID: 8133428
Filing Date: 2012-03-13
Classification: C08F,C09D,G02B,Y10S,Y10T

Abstract:
1. A fine pattern molded product, comprising a cured product obtained by photocuring a photocurable composition on a fine pattern of a mold having the fine pattern on its surface; wherein: prior to the photocuring, the viscosity of the photocurable composition containing substantially no solvent at 50° C. is from 1 to 200 mPa/s; the fine pattern comprises a pattern of recesses and protrusions repeatedly formed on the surface of the product; and the pattern of recess and protrusions is characterized by an average distance between adjacent protrusions in the range of 10 nm to 10 μm, an average protrusion width in the range of 10 nm to 5 μm, and an average protrusion height in the range of 10 nm to 10 μm; and wherein the photocurable composition comprises a photocurable monomer (A), a colloidal silica (B) having an average particle size of at most 200 nm and a photopolymerization initiator (C) in contents of the colloidal silica (B) (solid content) of from 5 to 60 parts by mass and the photopolymerization initiator (C) of from 0.1 to 10 parts by mass per 100 parts by mass of the photocurable monomer (A), wherein the photocurable monomer (A) comprises at least the following multifunctional monomer (A1) and the following bifunctional monomer (A2); and at least one compound belonging to the multifunctional monomer (A1) or the bifunctional monomer (A2) has a hydroxy group, and the ratio of the total amount (mol) of the hydroxy groups to the total amount (mol) of the multifunctional monomer (A1) and the bifunctional monomer (A2) is at least 10%: