The object of the present invention is to provide a resin composition that contains a near-infrared absorbent in which heat-induced discoloration is suppressed, and the resin composition is a resin composition made from a near-infrared absorbent, an antioxidant, and a resin, wherein the near-infrared absorbent is a particulate made from copper phosphonate represented by Formula (1) (wherein, R1 is a group represented by —CH2CH2-R11, and R11 indicates a hydrogen atom, an alkyl group, or an alkyl fluoride group)), and the antioxidant is at least one type selected from hindered phenol-based antioxidants and phosphorous-based antioxidants having not less than one structure represented by Formula (2) (wherein, R2 to R4 indicate alkyl groups and R5 to R8 indicate hydrogen atoms or alkyl groups.) bonded to a phosphorous atom in the molecule, and not having a structure represented by Formula (3) (wherein, R indicates an alkyl group.) bonded to the phosphorous atom in the molecule.
本发明的目的是提供一种含有近红外吸收剂的
树脂组合物,其中抑制热引起的变色,所述
树脂组合物由近红外吸收剂、
抗氧化剂和
树脂组成,所述近红外吸收剂是由式(1)表示的
磷酸铜颗粒制成(其中R1是表示为—CH2CH2-R11的基团,R11表示氢原子、烷基或烷基
氟化物基团),所述
抗氧化剂是至少选择一种基于受阻
酚的
抗氧化剂和
磷酸盐的
抗氧化剂,其分子中具有不少于一个式(2)表示的结构(其中R2至R4表示烷基,R5至R8表示氢原子或烷基),并且不具有式(3)表示的结构(其中R表示烷基)与分子中的
磷原子结合。