Importance

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Abstract

The present invention provides a resin composition comprising a thermoplastic resin (A); and silica composite oxide particles (B), wherein the thermoplastic resin (A) is a methacrylic copolymer containing monomer units derived from alkyl methacrylate with an alkyl group having 1 to 4 carbon atoms at 85% by mass or more and less than 100% by mass and monomer units derived from another vinyl monomer copolymerizable with the monomer units derived from alkyl methacrylate with an alkyl group having 1 to 4 carbon atoms at more than 0% by mass and 15% by mass or less, wherein silica composite oxide present in the silica composite oxide particles (B) is a material in which a portion of the silicon elements in silica is replaced with another element, wherein the content of the silica composite oxide particles (B) in the resin composition is 0.001 part by mass or more and 5 parts by mass or less with respect to 100 parts by mass of the thermoplastic resin (A), and a difference in refractive index between the silica composite oxide particles (B) and the thermoplastic resin (A) at a wavelength of 589 nm measured at 25° C. is 0.03 or less.

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First Claim