| 摘要 |
1. A mixture of two or more optical brighteners, which contains from 5 to 95% by weight of a compound of the general formula I see diagramm : EP0033018,P4,F5 and from 95 to 5% by weight of a compound of the general formula II see diagramm : EP0033018,P4,F6 in which formulae R is see diagramm : EP0033018,P4,F8 or formyl-C1 -C3 -alkyl, and Y and Z independently of one another are C1 -C4 -alkoxy, and the CN group is in the meta- or para- position. |
