申请人:BASF Aktiengesellschaft
公开号:US04603205A1
公开(公告)日:1986-07-29
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.
一种一般式为##STR1##的新型呋喃羧酸衍生物,其中R.sup.1、R.sup.2和R.sup.3彼此独立地分别为氢、C.sub.1-C.sub.8-烷基、环己基或苯基,但不超过两个这些基团同时为氢,而R.sup.4是式--NR.sup.5R.sup.6、##STR2##或OR.sup.6的基团,其中A是桥接成员,R.sup.5为氢、C.sub.2-C.sub.6-烯基、C.sub.5-C.sub.7-环烷基或C.sub.1-C.sub.12-烷基,可能或可能不被1、2或3个氧原子中断,而R.sup.6是式##STR3##的基团,其中R.sup.7、R.sup.8、R.sup.9和R.sup.10分别为C.sub.1-C.sub.4-烷基,或R.sup.7和R.sup.8或R.sup.9和R.sup.10一起形成四亚甲基或五亚甲基桥,而R.sup.11为氢、C.sub.1-C.sub.8-烷基、C.sub.3-C.sub.8-烯基、C.sub.2-C.sub.4-羟基烷基或芳基烷基,它们的盐在有机聚合物中,特别是烯烃聚合物中作为光稳定剂是有用的。