申请人:Bayer Aktiengesellschaft
公开号:US04271293A1
公开(公告)日:1981-06-02
Compounds of the formula ##STR1## in which R.sub.1 denotes aryl, alkyl, aralkyl, styryl or alkoxy, R.sub.2 denotes hydrogen, cyano, carboxyl or alkoxycarbonyl, inter alia, R.sub.3, R.sub.4, R.sub.6 and R.sub.7 denote hydrogen, alkyl, alkoxy or halogen, R.sub.5 denotes hydrogen, alkyl or aryl, R.sub.8 and R.sub.9 denote hydrogen, cycloalkyl, alkenyl, alkyl or aralkyl, A.sup..crclbar. denotes an anion, w denotes the valency of the anion A and n denotes 0 or 1, are outstandingly suitable for optically brightening synthetic fibre materials, in particular acrylic fibres. The new brighteners are prepared and used in accordance with methods which are in themselves known.
式为##STR1##的化合物,其中R.sub.1表示芳基、烷基、芳基烷基、苯乙烯基或烷氧基,R.sub.2表示氢、氰基、羧基或烷氧羰基,其中R.sub.3、R.sub.4、R.sub.6和R.sub.7表示氢、烷基、烷氧基或卤素,R.sub.5表示氢、烷基或芳基,R.sub.8和R.sub.9表示氢、环烷基、烯基、烷基或芳基烷基,A.sup..crclbar.表示阴离子,w表示阴离子A的价数,n为0或1,这些化合物非常适合用于增白合成纤维材料,特别是丙烯酸纤维。新的增白剂是根据已知的方法制备和使用的。