申请人:Kureha Corporation
公开号:EP2886610A1
公开(公告)日:2015-06-24
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.
⁅O-R] (3)
本发明的目的是提供一种含有可抑制热引起的变色的近红外吸收剂的树脂组合物,该树脂组合物是由近红外吸收剂、抗氧化剂和树脂制成的树脂组合物,其中近红外吸收剂是由式(1)代表的膦酸铜制成的微粒(其中、R1是由-CH2CH2-R11代表的基团,R11表示氢原子、烷基或烷基氟化基)),抗氧化剂至少是一种选自受阻酚基抗氧化剂和磷基抗氧化剂的类型,它们具有不少于一种由式(2)代表的结构(其中,R2至R4表示烷基,R5至R8表示氢原子或烷基。)与分子中的磷原子键合,且不具有与分子中的磷原子键合的式(3)(其中,R 表示烷基。
⁅O-R] (3)