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.
|Number of pages||5|
|Journal||Journal - Society of Dyers and Colourists|
|Publication status||Published - Dec 1 1997|
ASJC Scopus subject areas
- Polymers and Plastics