| 摘要 |
Bis-(triazinylamino)-stilbenesulphonic acids <IMAGE> +TR <IMAGE> wherein X is optionally substituted NH2 <IMAGE> Y is a radical of formula Z is -COOR4, -CO-CmH2m+1, -CN or <IMAGE> R1 is H, halogen, alkyl or alkoxy, R2 is H or alkyl, R3 is H, optionally substituted alkyl, cycloalkyl or phenyl or <IMAGE> R4 is optionally substituted alkyl, R3 and R6 are H, alkyl, hydroxyalkyl or form together with N a heterocycle m is a whole number from 1 to 5 and n is 1 or 2, are optical brighteners suitable for cellulosic fibres, polyamide and polyurethane fibres and paper.
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