COLORS FOR RIGHT FIRST TIME DYEING
Chemifix RGB Dyes
Chemifix 'RGB' Dyes are high performance dyes, produced from speciality dyestuff intermediates and reactive groups. These dyes have been uniquely formulated by incorporating novel levelling agents, to give excellent levelling and reproducible results. These dyes can be used for exhaust, continuous and semi-continuous dyeing. Chemifix 'RGB' dyes can be used in combination with 'VS' and 'ME' dyes for producing whole gamut of shades.
Exhaust Dyeing MethodWinch/Soft Flow Jet Dyeing
Start dyeing with required amount of dye at room temperature. Run the fabric for 10 min. Add the required amount of salt in 2-3 portions over a period of 20 min. and raise the temperature to 60° C in 20-30 min. Continue dyeing at 60° C for 15-30 min. Add alkali in 2-3 portions over a period of 20 min and continue dyeing for 60-90 min.
Salt and Alkali requirement
|% Shade||Common Salt (g/l)||Soda Ash (g/l)||Mixed Alkali (g/l)|
|Soda Ash||Caustic Soda Solid|
|Upto 0.1||05 - 10||8||8||-|
|0.1 to 0.5||10 - 40||10 - 15||10||-|
|0.5 to 1.0||40 - 50||15 - 20||5||0.2 - 0.4|
|1.0 to 2.0||50 - 70||20||5||0.4 - 0.5|
|2.0 to 4.0||70 - 80||20||5||0.5 - 0.8|
|Above 4.0 %||80||20||5||1.0|
To achieve best possible fastness properties, it is essential to remove the unfixed/hydrolysed dye completely from the substrate. Following sequences can be used for this purpose.
Cold rinse -------> Hot rinse -------> Neutralise (with acetic acid) -------> Soap (1-3 times) -------> Hot rinse -------> Cold rinse.
Soaping can be done with 1-2 g/l anionic or non-ionic detergent or polymeric washing off agent at boil for 15 min. (M:L::1:15 to 1:20)
Fastness of dyed material to various agencies was assessed as per the standard test methods at 1/1 std. depth, mentionaed below:
( This information and our technical advice are given in good faith but without warranty. Our advice does not release you from the obligation to check its validity and to test our products as to their suitability for the intended processes and uses. The application, use and processing of our products and the products manufactured by you on the basis of our technical advise are beyond our control and therefore, entirely your own responsibility.)