抄録
In order to find what contribution can be ascribed to α-CH…X-Dye type hydrogen bonding in dyeing with azobenzene type disperse dyes, Rf values of dyes in paperchromatography are discussed from the viewpoint of the interaction between dyes and esters, and noted with the results as follows:
1) Similarly as to aminoanthraquinone type dyes, there exists the correlation between Rf value and ester concentration [A]. Changes of free energy (-ΔF) of interaction may be calculated from the estimated K.
2) The smaller the electron density in α-CH position of ester is the larger -ΔF value becomes, hence it is known that α-CH…X-Dye type hydrogen bonding makes an important contribution to the interaction.
3) It is suggested from the result (2) that α-CH…X-Dye type hydrogen bonding makes a good part of contribution to dyeing with azobenzene type disperse dyes, too.
