BRIJFIX RNW PROPERTIES : Appearance : Dark Brown Liquid pH of 2% solution : 4.5 + 0.5 Ionic Nature : Anionic Dilutability in Water : Mixable in all proportions in cold and hot water Stability to dilute acid, : Good Alkalies & hard water APPLICATIONS : It can be used : •? In washing of nylon prints as well as polyester prints to prevent staining or tinting of white ground and dulling of pale shades. •? As a dye fixing agent. After treatment of dyed nylon with BRIJfix RNW will generally improve the fastne ss to washing. • As a levelling agent for acid dyes by reducing the rate of dye uptake. • For uniform solid dyeing of wool/nylon & blends. • For reservation of nylon fibres in blends containing vegetables fibres. GUIDELINES : • Washing of nylon prints : Prints especially those of large surface area and made with high concentration of dye stuffs, tend to mark off and stain unprinted white portion ground and dulling of pale shades during the washing process. The use of BRIJfix RNW will improve the appearance of the goods if after steaming the goods are treated in first washing bath with 1-2 grams per litre BRIJfix RNW for 10 minutes at 30ºC – 40ºC and then soaped in the normal way. • Washing of polyester prints : Prints especially those of large surface area and made high concentration of dyestuffs tend to mark off and stain unprinted white portion grounds and dulling of pale shades during the washing process. The use of BRIJfix RNW will improve the appearance of the goods if after steaming the goods are treated in first bath with 2-3 gram per litre BRIJfix RNW for 10 minutes at 30º C – 40º C and then soaped in the normal way. AFTER TREATMENTS : (To improve Fastness Properties ) After treatment with BRIJfix RNW will generally improve the fastness to water and perspiration of shades obtained with weakly acid dyes on nylon fibres and is carried out by adding 1 gram per litre BRIJfix RNW to the exhausted dye bath and treating the goods for 15 minutes at 80º C – 90º C. LEVELLING PROPERTY : Addition of 1-2 gram per litre BRIJfix RNW during acid dyeing assists in improving the levelness of dyeing. • Solid dyeing of wool/nylon blends : In pale and medium shades the nylon fibre always dyes darker than the wool. The addition of BRIJfix RNW to the dye bath inhibits exhausting of the dye on the nylon portion to enable uniform dyeing of blends. Pale to dark shades 1 – 1.5 gram per litre BRIJfix RNW. The goods are entered at 40 º C in the bath containing auxillaries and pre- dissolved dye solution, the temperature is raised slowly and steadily over 45 minutes to the boil and kept there for a further 45 minutes. The pH of dye bath should be maintained neutral or slightly alkaline. • Reservation of nylon fibre in blends containing vegetable fibre : When dyeing blend of nylon with either cotton or viscose it is possible to prevent the direct dye from staining the nylon portion by carrying out of the process under neutral or weakely alkaline conditions with the additions of : 1-2 gram per litre BRIJfix RNW. 0.5 gram per litre Tri Sodium Phosphate.