申请人:Ciba-Geigy Corporation
公开号:US05071993A1
公开(公告)日:1991-12-10
Compounds of the formula ##STR1## in which R.sup.1 and R.sup.3 independently of one another are C.sub.1 -C.sub.8 alkyl, cyclopentyl, cyclohexyl, C.sub.7 -C.sub.9 aralkyl, phenyl or a group of the formula --C.sub.m H.sub.2m+1-q (X).sub.q (II) in which m is a number from 0-10 and q is 1 or 2, with q=1 in the case of m=0, R.sup.2 and R.sup.4 independently of one another are each a group of the formula II or, in the case that R.sup.1 and R.sup.3 are each a group of the formula II, R.sup.2 and R.sup.4 independently of one another can also be C.sub.1 -C.sub.8 alkyl, cyclopentyl, cyclohexyl, C.sub.7 -C.sub.9 aralkyl or phenyl, R.sup.5 and R.sup.6 independently of one another are hydrogen, methyl, ethyl or together are trimethylene or tetramethylene, and X is a group of the formula ##STR2## in which the general symbols are as defined in claim 1, are suitable as fluorescent brighteners especially for photographic recording materials and for synthetic polymers.
式##STR1##中的化合物,其中R.sup.1和R.sup.3分别独立地是C.sub.1 -C.sub.8烷基,环戊基,环己基,C.sub.7 -C.sub.9芳基烷基,苯基或具有式--C.sub.m H.sub.2m+1-q (X).sub.q (II)的基团,在该式中m是0-10的数,q为1或2,在m=0的情况下q=1,R.sup.2和R.sup.4独立地是式II的基团,或者,如果R.sup.1和R.sup.3分别是式II的基团,那么R.sup.2和R.sup.4也可以独立地是C.sub.1 -C.sub.8烷基,环戊基,环己基,C.sub.7 -C.sub.9芳基烷基或苯基,R.sup.5和R.sup.6独立地是氢,甲基,乙基或一起是三亚甲基或四亚甲基,X是式##STR2##中的基团,在该式中一般符号如权利要求书1中所定义,特别适用于荧光增白剂,特别是用于摄影记录材料和合成聚合物。