Page 365 - Basic Principles of Textile Coloration

354 REACTIVE DYES

Br Cl F
Dye NH CO C CH2 Dye NH N

Bromoacrylamido NF

Difluorochloropyrimidine (DFCP)

Dye SO2CH2CH2OSO3Na CH3
Sulphatoethyl sulphone* Dye SO2 CH2CH2 N CH2CH2SO3Na

N-Methyltaurine ethyl sulphone*

(*give vinyl sulphone)

Figure 16.7 Types of reactive dyes for wool

Br
Dye NH CO CH CH2 Br

Br
Dye NH CO C CH2 + HBr

NH Wool Br
Dye NH CO C CH2 Dye NH CO CH CH2 NH Wool

Wool
N
Dye NH CO CH CH2

NH Wool
Dye NH CO CH CH2 NH Wool
Figure 16.8 Reactions of bromoacrylamido reactive dyes with wool

Dye NHCOCH2Cl + Wool SH Wool S CH2CONH Dye + HCl
Scheme 16.5