申请人:LANXESS Deutschland GmbH
公开号:US11193023B2
公开(公告)日:2021-12-07
The present invention relates to novel methine dyes, methods for the preparation thereof and use thereof for dyeing plastics, especially polyamides, so as to obtain yellow to orange colourings with improved light fastness and improved thermal stability. Such dyes include a dye of the formula (I)
in which
R1 is hydrogen, halogen, COOH or COOR11, R2 is hydrogen, halogen, COOH, COOR12 or CN, R3 is alkyl or phenyl, R4 and R5 are each independently alkyl, R6, R7, R8, R9 and R19 are each independently hydrogen, halogen, alkyl, alkoxy or COOR13, and R11, R12 and R13 are each independently alkyl.
本发明涉及新型甲胺染料、其制备方法及其在塑料(尤其是聚酰胺)染色中的用途,从而获得具有更好耐光性和热稳定性的黄色至橙色色素。这类染料包括式 (I) 的染料
其中
R1 是氢、卤素、COOH 或 COOR11,R2 是氢、卤素、COOH、COOR12 或 CN,R3 是烷基或苯基,R4 和 R5 各自独立地是烷基,R6、R7、R8、R9 和 R19 各自独立地是氢、卤素、烷基、烷氧基或 COOR13,以及 R11、R12 和 R13 各自独立地是烷基。