Manufacturing method of antireflection article, antireflection article, cover glass, and image display device

A method of manufacturing an antireflection article including:

• a substrate with a compressive stress of 500 MPa or more, consisting of an Al—O bond, or a substrate with a compressive stress of 500 MPa or more, containing both an Al—O bond and a Si—O bond, and
• an antireflection layer having a moth eye structure in an unevenness shape formed by metal oxide particles on a surface of the antireflection layer, on the substrate, wherein the metal oxide particles include a first particle group and a second particle group,
• the method comprising:
• applying, on the substrate, an antireflection layer-forming composition containing:
• (a) a binder having a weight average molecular weight of 300 to 2,000, which is at least one selected from a monomer represented by Formula (1), a monomer represented by Formula (2), and a product obtained by a condensation reaction of at least one of the monomer represented by Formula (1) and the monomer represented by Formula (2),
• (b) a binder having a weight average molecular weight of 2,000 or less, which is represented by Formula (3),
• metal oxide particles,
• a metal chelate catalyst, and
• a solvent
• to dispose the first particle group which forms a convex portion having an unevenness shape and the second particle group between the first particle group and the substrate;
• volatilizing and drying the solvent;
• and
• heating and curing the binder (a) and the binder (b) after the volatilizing and drying of the solvent,
• wherein the unevenness shape of the antireflection layer has a ratio B/A of 0.55 or more, which is a ratio of a distance B between a center of apexes of adjacent convex portions and a concave portion to a distance A between the apexes of the adjacent convex portions,
• an average primary particle diameter of the metal oxide particles is 150 nm to 380 nm,
• a hydroxyl group content on a surface of the metal oxide particles is 1.00×10−1 or less,
• an indentation hardness of the metal oxide particles is 400 MPa or more, and
• the binder (a) and the binder (b) are blended in the antireflection layer-forming composition at a blending ratio in which a solubility parameter (SP value) after mixing the binder (a) and the binder (b) is 20 to 24:
• wherein R1, R2 and R3 each independently represent an alkyl group having 1 to 10 carbon atoms or a hydroxyl group, and optionally further includes a substituent,
• X1, X2 and X3 each independently represent a hydrolysable group or a hydroxyl group,
• n1 and n2 each independently represent an integer of 0 to 1, m, in Formula (3), represents an integer of 1 to 22, and a plurality of X1's and a plurality of X2's are optionally same or different, and
• when a plurality of X3, R1, R2 and R3 is present, a plurality of X3's, a plurality of R1's and a plurality of R3's are optionally same or different.