Influence of dichloro-s-triazinyl reactive dyes on the fibrillation propensity of lyocell fibres

Four dichloro-s-triazinyl dyes and 2,4-dichloro-6-p-sulphoanilino-1,3,5-triazine have been applied by exhaustion methods to dried lyocell fibres. The method of application, of both dyes and agent, influenced the cross-linking performance and, in turn, the wet abrasion resistance of the treated fibre. However, dyeing alone, with any of the MX dyes used in this study, was insufficient to protect the fibre from wet abrasion problems during laundering. A comparison between one of the MX dyes, Chloranyl Orange MX-2R, and 2,4-dichloro-6-p-sulphoanilino-1,3,5-triazine on a mol-for-mol fixed basis, showed 2,4-dichloro-6-p-sulphoanilino-1,3,5-triazine to be greatly superior at protecting lyocell against wet abrasion.