| 摘要 |
The new compounds conform to the formula I <IMAGE> where A denotes identical or different aryl or hetaryl radicals, A<(-)> is an anion, B is a bridge member, B<1> is an alkylene radical, R is hydrogen, alkyl, aralkyl or acyl, and T is the radical of a quaternised heterocycle. They are very highly suitable for dyeing paper stock.
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