PRODUCTION METHOD FOR ANTIREFLECTION LAMINATE

摘要

PROBLEM TO BE SOLVED: To provide a production method for an antireflection laminate having low refractive index and excellent mechanical strength where a coating layer of an ionizing radiation curable resin composition containing hollow silica fine particles is formed.

SOLUTION: Silica fine particles are prepared through the following steps: a first step to form colloidal particles comprising a complex oxide; a second step to selectively remove at least some of elements other than silicon and oxygen from the colloidal particles by dissolving and removing using a mineral acid or an organic acid or by contacting with a cation exchange resin to remove by ion exchange; a third step to coat the surface of the colloidal particles with a hydrolyzable organic silicon compound or a polymer of a silicic acid liquid to prepare silica fine particles; and a fourth step to hydrothermally treat the silica fine particles in the range of 50 to 300°C so that the amounts of alkali metal oxide and ammonia contained in the silica fine particles are 10 ppm and 2000 ppm or less, respectively.

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