Patent ID: 9389339
Filing Date: 2016-07-12
CPC Classification: B05D,B32B,C08K,C08L,G02B,Y10T

Claim Text:
1. A method for producing an antireflection film, comprising, in this order: a step of preparing a coating composition formed by mixing the following components (A) to (E); a step of coating the coating composition on a base material to form a coating film; a step of volatilizing the solvent from the coating film for drying the coating film; and a step of curing the coating film to form a cured layer, wherein a multilayer structure having different refractive indices from the coating composition is formed: (A) a fluorine-containing polymer having a polyalkylene oxide group in the molecule, represented by the following general formula (1); (B) non-surface-modified inorganic fine particles, or inorganic fine particles that are surface-treated with a silane coupling agent having a molecular weight of 600 or less; (C) a curable binder having no fluorine atom in the molecule; (D) a solvent, provided that the mass ratio of [component (A)+component (B)]/[component (C)] is from 1/199 to 60/40; and (E) a curable compound having a fluorine atom in the molecule as a component, represented by the following general formula (3); wherein in the general formula (1), a to f each represent the molar fraction of each constituent unit, and g represents % by mass in the fluorine-containing polymer, representing values satisfying the relationships of 0≦a≦70, 0≦b≦70, 0≦c≦80, 30≦a+b+c≦90, 0≦d≦50, 0≦e≦50, 0.1≦f≦50, and 0≦g≦15, respectively; (MF1) represents a constituent unit that is polymerized from a monomer represented by CF (MF2) represents a constituent unit that is polymerized from a monomer represented by CF (MF3) represents a constituent unit that is polymerized from a monomer represented by CH (MA) represents a constituent unit having at least one of a group having an unsaturated double bond and a ring-opening polymerization reactive group; (MB) represents a non-crosslinkable constituent unit; (MC) represents a constituent unit that is polymerized from a monomer having at least one polyalkylene oxide group of the following general formula (2); wherein in the general formula (2), R (MD) represents a constituent unit having at least one polysiloxane structure; wherein in the general formula (3), a1, b1, c1, d1, and h each represent the molar fraction of the respective constituents, representing values satisfying the relationships of 0≦a1≦70, 0≦b1≦70, 30≦a1+b1≦70, 0≦c1≦50, 5≦d1≦50, and 0≦h≦50, respectively; (MF1) represents a constituent unit that is polymerized from a monomer represented by CF2=CF—Rf (MF2) represents a constituent unit that is polymerized from a monomer represented by CF2=CF—ORf (MF3) represents a constituent unit that is polymerized from a monomer represented by CH (MA′) represents a constituent unit having at least one crosslinkable group; and (ME) contains a polysiloxane structure.