Abstract
According to the previous papers1)-7) on model substances, it was concluded that α-CH…X-Dye type hydrogen bonding made an important contribution to the interaction between aminoanthraquinone type disperse dyes and cellulose acetate fiber and the like.
In the present paper, the same problem is discussed on actual dyeing data.
(1) Saturation values of this type of dyes on cellulose acetate do not contradict with the result from model substances.
Hence, it is concluded that α-CH…X-Dye type hydrogen bonding plays an important part in actual dyeing of cellulose acetate fibre, too.
(2) The correlation between saturation values on acetate and on Nylon is not regarded as nonexistence.
In view of this fact and α-CH groups in Nylon, it may be expected that the same bonding has a possibility to act a role in Nylon dyeing. But, the significance of the bonding in Nylon dyeing is far smaller than in acetate dyeing.
(3) Saturation value of anthraquinone on Terylene is nearly equal to that of 1, 4-diamino-derivative.
It may be assumed that the same bonding may make a contribution to Terylene dyeing, too.
(4) Because of the structural analogy, it is assumed that the dyeing mechanism of acrylic fibres is similar to that of acetate fibre.
A method to improve the dyeability of acrylic fibres is suggested from this assumption.
