Wool-acid dye covalent bonding: the effect of water-soluble carbodiimides

L. Trezl, K. Vizvardi, Z. M. Jaszay, I. Petnehazy, P. Bako

Research output: Contribution to journalArticle

1 Citation (Scopus)


Wood dyed with acid dyes has low wash fastness because of the weak, secondary forces between the fibre and the dye molecule. The amount of covalently fixed dye increases when aftertreating the dyed wood samples with carbodiimdes. Several water-soluble carbodiimide deriatives proved to be effective for this purpose. They were synthesised by our method involving the use of: N-propyl-N′-(3-trimethyl-ammoniumprophyl)-carbodiimide- iodide, N-cyclohexyl-N′-(3-trimethylammonium-prophyl)-carbodiim ide-iodide, and N-cyclohexyl-N′-(2-morpholinoethyl)-carbodiimide-methyl -p-toluene-sulphonate. No damage occured in the fibre structure during the treatment. The effect of both the carbodiimides and the dyes (Sandolan Fast Blue P-L, Egacyd Yellow T) is discussed.

Original languageEnglish
Pages (from-to)15-19
Number of pages5
JournalJournal - Society of Dyers and Colourists
Issue number1
Publication statusPublished - Dec 1 1997

ASJC Scopus subject areas

  • Polymers and Plastics

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