Abstract: A formed resin article, containing a compound and a polymer substance, wherein the compound has a maximum absorption wavelength in a range of 400 nm or less, measured in a solution of the compound, wherein the compound is contained in the polymer substance in a quantity of 5 g/m2 or less, and wherein a light transmittance of the article at a wavelength of 410 nm is 5% or less.

Abstract: An ultraviolet absorbent composition, containing at least one kind of specific ultraviolet absorbent as exemplified below, and at least one kind of specific compound as exemplified below.

Abstract: A lighting unit cover, having a resin composition including ultraviolet absorbent A, the ultraviolet absorbent A being a compound represented by formula (1): in which, Het1 represents a bivalent five- or six-membered aromatic heterocyclic residue; the aromatic heterocyclic residue may have a substitutent; and R1a, R1b, R1c, R1d, R1e, R1f, R1g and R1h each independently represent a hydrogen atom or a monovalent substituent.

Abstract: An ultraviolet absorbent composition, having ultraviolet absorbent A and a silicon compound, in which the ultraviolet absorbent A has a maximum absorption wavelength from 350 nm to 400 nm, a half value width of 55 nm or less, and the molar extinction coefficient of 20000 or more at the maximum absorption wavelength.

Abstract: A formed resin article, containing a compound and a polymer substance, wherein the compound has a maximum absorption wavelength in a range of 400 nm or less, measured in a solution of the compound, wherein the compound is contained in the polymer substance in a quantity of 5 g/m2 or less, and wherein a light transmittance of the article at a wavelength of 410 nm is 5% or less.

Abstract: An ultraviolet absorbent composition, containing: an ultraviolet absorbent A represented by formula (1); an ultraviolet absorbent B represented by formula (2-a) or (2-b); and a compound C, which is at least one kind of compound selected from the group consisting of a singlet oxygen scavenger, an antioxidant and a radical trapping agent: wherein Ra1 and Ra2 each independently represent a hydrogen atom or a specific substituent; Ra3 and Ra4 each independently represent a substituent having a Hammett substituent constant ?p value of 0.2 or more; Ra5 to Ra7 each represent a hydrogen atom or a monovalent substituent; X1 and X2 each independently represent a hydrogen atom or a specific substituent; s1 and s2 each independently represent an integer of 1 to 3; Lg represents a divalent substituent or a single bond; w represents 0 or 1; tb represents 1 or 2; and X3 represents, when tb is 1, a hydrogen atom or a specific substituent; and when tb is 2, X3 represents a divalent substituent.

Abstract: An ultraviolet absorbent composition, comprising: at least one kind of ultraviolet absorbent (A) that is a compound represented by the following Formula (1); and at least one kind of ultraviolet absorbent (B) that is a compound where absorbance at 320 nm is 20% or more of absorbance at absorption maximum wavelength in the range of from 270 nm to 400 nm and the absorption maximum wavelength is 380 nm or less: wherein Het1 represents a bivalent five- or six-membered aromatic heterocyclic residue; the aromatic heterocyclic residue may have a substituent; Xa, Xb, Xc and Xd each independently represent a heteroatom; Xa to Xd may have a substituent; Ya, Yb, Yc, Yd, Ye and Yf each independently represent a heteroatom or a carbon atom; Ya to Yf may have a substituent; and the rings bound to Het1 may have a double bond at any position.

Abstract: An ultraviolet absorbent containing a compound represented by the following formula (I), having an aluminum ion in a concentration of less than 2 ppm, and an iron ion in a concentration of less than 2 ppm. wherein R1 represents a substituent; n1 represents an integer of 0 to 4; R2 represents an n2-valent substituent or a linking group; and n2 represents an integer of 1 to 4.