Process for crossdyeing cellulosic fabrics

A process for crossdyeing a crosslinked cellulose fabric comprising:

• (a) treating preselected areas of cellulose fabric with an aqueous cationic solution of sufficient concentration of:
• N-methylol crosslinking agent, acid catalyst and choline quaternary to render said preselected areas cationic after curing;
• (b) drying the fabric of (a) and treating the remaining areas of the fabric with an aqueous anionic solution of sufficient concentrations of:
• N-methylol crosslinking agent, acid catalyst and hydroxycarboxylic to render said preselected areas anionic after curing;
• (c) drying and curing the fabric of (b);
• (d) immersing the fabric in an acidic dyebath containing an anionic dye for sufficient time to allow the anionic dye to react with the cationic areas and thereby produce a fabric colored in the cationic areas;
• and
• (e) immersing the fabric in a dyebath containing a cationic dye of a different color for sufficient time to allow the cationic dye to react with the anionic areas and thereby produce a bicolored fabric.

A process for crossdyeing a partially crosslinked fabric with cationic, anionic and untreated preselected areas comprising:

• (a) treating preselected areas of a cellulosic fabric with an aqueuous cationic solution of sufficient concentrations of:
• N-methylol crosslinking agent, acid catalyst and choline quaternary to render said preselected areas cationic after curing;
• (b) drying the fabric of (a) and treating other preselected areas of the fabric with an aqueous anionic solution of sufficient concentrations of:
• N-methylol crosslinking agent, hydroxycarboxylic acid and acid catalyst to render said remaining areas anionic after curing;
• (c) drying and curing the fabric if (b);
• (d) immersing the fabric in an acidic dyebath containing an anionic dye for sufficient time to allow the anionic dye to react with the cationic areas and thereby produce a fabric which is dyed only in the cationically treated areas and washing the fabric to remove unreacted dyestuffs from the fabric;
• (e) immersing the fabric in an alkaline dyebath containing a reactive dyestuff of different color than that of step (d) for sufficient time to modify the dyed cationic area, and the the untreated area of the fabric thereby producing a tricolored fabric wherein the cationic areas are one color, the untreated areas are a different color and the anionic areas are undyed.