Use of oligo- or polymeric compounds in dyeing lignin-free paper material

摘要

Polymeric dyes of the general formula I IMAGE I where A is the radical of a methylene-active compound, which may or may not be quaternized, B1 and B2 are bridge members which may or may not be quaternized or B2 may be a direct bond, n is number 1, p is the number of positive charges, R is hydrogen, chlorine, bromine, hydroxyl, C1-C8-alkyl, nitro, C1-C8-alkoxy, C1-C8-alkoxycarbonyl, cyano, hydroxycarbonyl, unsubstituted or substituted carbamyl or unsubstituted or substituted amino, R1 is hydrogen, chlorine, hydroxyl, C1-C4-alkyl or C1-C4-alkoxy or R and R1 together are an unsubstituted or substituted fused ring, or R and R1 together with B2 are a heterocyclic radical and A(-) is an anion.