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    • 2. 发明授权
    • Furan-3-carboxylic acid derivatives
    • 呋喃-3-羧酸衍生物
    • US4603205A
    • 1986-07-29
    • US681195
    • 1984-12-13
    • Peter NeumannReinhard HelwigStefan WeissHubert Trauth
    • Peter NeumannReinhard HelwigStefan WeissHubert Trauth
    • C09K15/30C07D405/12C07D405/14C08K5/34C08K5/3435C08L23/00C08L23/02C08L101/00C07D407/04C07D407/14
    • C07D405/12C07D405/14C08K5/3435
    • Novel furancarboxylic acid derivatives of the general formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 independently of one another are each hydrogen, C.sub.1 -C.sub.8 -alkyl, cyclohexyl or phenyl, but not more than two of these radicals are simultaneously hydrogen, and R.sup.4 is a radical of the formula --NR.sup.5 R.sup.6, ##STR2## or OR.sup.6, where A is a bridge member, R.sup.5 is hydrogen, C.sub.2 -C.sub.6 -alkenyl, C.sub.5 -C.sub.7 -cycloalkyl or C.sub.1 -C.sub.12 -alkyl which may or may not be interrupted by 1, 2 or 3 oxygen atoms, and R.sup.6 is a radical of the formula ##STR3## where R.sup.7, R.sup.8, R.sup.9 and R.sup.10 are each C.sub.1 -C.sub.4 -alkyl, or R.sup.7 and R.sup.8 or R.sup.9 and R.sup.10 together form a tetramethylene or pentamethylene bridge, and R.sup.11 is hydrogen, C.sub.1 -C.sub.8 -alkyl, C.sub.3 -C.sub.8 -alkenyl, C.sub.2 -C.sub.4 -hydroxyalkyl or aralkyl, and their salts are useful as light stabilizers for organic polymers, in particular olefin polymers.
    • 其中R 1,R 2和R 3彼此独立地是氢,C 1 -C 8 - 烷基,环己基或苯基,但不多于两个这些基团同时为氢,而R4是氢原子的通式为“IMAGE”的新型呋喃羧酸衍生物 式-NR5R6基团,其中A是桥连构件,R5是氢,C2-C6-烯基,C5-C7-环烷基或C1-C12-烷基,其可以被或不会被 1,2或3个氧原子,R 6是下式的基团,其中R 7,R 8,R 9和R 10各自是C 1 -C 4 - 烷基,或者R 7和R 8或R 9和R 10一起形成四亚甲基或五亚甲基桥 ,R11为氢,C1-C8-烷基,C3-C8-烯基,C2-C4-羟基烷基或芳烷基,它们的盐可用作有机聚合物,特别是烯烃聚合物的光稳定剂。