The Light Fastness of the Reactive Dyes on Cationized Cellulose

Figures & data

Figure 1. Structures of cationic modifiers.

Figure 2. Chemical structures of reactive dyes.

Figure 3. Chemical bonds between selected reactive dyes with cellulose uncationised (I) and cationised with: chlorocholine chloride (II), CHPTAC (III) and Texamin ECE New (IV) respectively.

Table 1. Comparison of the light fastness for reactive dyes on cellulose unmodified in relation to cationised with selected modifiers (¹⁾ Light fastness after 36 hours irradaiation according to the blue scale).

Table 2. Electron densities data for quaternary groups and sulfonic group.

Compound	– SO3^−	Quaternary group (electron density)
Fig. 3 (I) untreated	−0,497	none	none-
Fig. 3 (II) -[Ch]^+-		$-\stackrel{+}{\mathrm{N}}(C{H}_3{)}_3$	0.633
Fig. 3 (III) -[HPTA]^+-		$-\stackrel{+}{\mathrm{N}}(C{H}_3{)}_3$	0.638
Fig. 3 (IV) -[IME]^+-			(0.852) n-1