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    • 26. 发明授权
    • Squarylium compound, method for producing the same and infrared absorbent
    • 方酸化合物,其制备方法和红外线吸收剂
    • US08642806B2
    • 2014-02-04
    • US13072176
    • 2011-03-25
    • Shunya KatoYoshihiro Jimbo
    • Shunya KatoYoshihiro Jimbo
    • C07F5/02
    • C07F5/02
    • Provide is a compound having absorbability in an infrared region, excellent invisibility and robustness. The compound is a squarylium compound represented Formula (1): wherein, R1 and R2 represent an alkyl group, cycloalkyl group, aryl group, or heteroaryl group, which may be substituted by a substituent; R3 and R4 represent a hydrogen atom or alkyl group; X1 and X2 represent an oxygen atom or —NR5—, in which R5 represents a hydrogen atom or alkyl group; Y1, Y2, Y3 and Y4 represent a halogen atom, alkyl group, cycloalkyl group, aryl group, heteroaryl group, arylcarbonyloxy group, or alkylcarbonyloxy group; a plurality of Y1's, Y2's, Y3's, or Y4's may be bonded to form a ring structure, respectively; Y1 and Y2, or Y3 and Y4 may be bonded to form a ring structure; n1 and n4 represent an integer of 0 to 3; and n2 and n3 represent an integer of 0 to 2.
    • 提供一种在红外区域具有吸收性,优异的不可见性和鲁棒性的化合物。 化合物是式(1)表示的方酸化合物:其中,R 1和R 2表示可被取代基取代的烷基,环烷基,芳基或杂芳基; R3和R4表示氢原子或烷基; X 1和X 2表示氧原子或-NR 5 - ,其中R 5表示氢原子或烷基; Y1,Y2,Y3和Y4表示卤素原子,烷基,环烷基,芳基,杂芳基,芳基羰基氧基或烷基羰基氧基; 可以分别连接多个Y1,Y2,Y3或Y4以形成环结构; Y1和Y2,或Y3和Y4可以键合形成环结构; n1和n4表示0〜3的整数, n2和n3表示0〜2的整数。