The synthesis of a series of fixers by the reaction of formaldehyde with various molar ratios of melamine/ area is decreased which belong to the class of thermosetting resins. All the products were clear , transparent, viscous and miscible with water. The dyed (C,I Direct Red 2) cotton and rayon specimen were impregnated with fixers and cured at 150oC for 3 minutes using CH3COOH (curing catalyst). The performance of all fixers evaluated using rubbing and washing fastness tests. The rubbing fastness to crocking and color fastness to washing is reported and found to be dependent on the fixing efficiency of fixer to dye. Fixer based on 50-50% molar ratio of melamine-urea-formaldehyde showed the excellent fixing efficacy.
M ZUBER ,K P BHATTI ,F A CHUGHTAI ,
You can use below filter to find your desired issue