| 摘要 |
An optical brightener contains as active substance a compound of the formula <IMAGE> in which X is the radical of an aliphatic, aromatic or heterocyclic amine bonded via an N atom, or an NH2 group, Ar is an m- or p-phenylene radical and M is a singly charged cation. The composition additionally contains a compound of the formula <IMAGE> The optical brightener is particularly used for materials composed of cellulose fibres, sized paper and polyamide fibres. |
