These are dichloro triazine reactive dyes. These dyes are highly reactive and hence does not require strong condition for fixation with cellulose material. These dyes are suitable for both dyeing and printing methods. Dyeing Methods • Exhaust Dyeing Method Diagram not to scale     Minutes   Set temperature at 30°c   Load machine with the goods. Ensure that pH is below 7. Adjust with acetic acid if necessary   05 add predissolved Dye   10 continue dyeing at 30°c   02 add 2.5 g/l Salt   10 continue dyeing at 30°c   03 add 7.5 g/l Salt   15 continue dyeing at 30°c   05 add remaining Salt   15 continue dyeing at 30°c   05 add 2.5 g/l Soda Ash slowly   15 continue dyeing at 30°c   05 add remaining Soda Ash   30-45 dye at 30°c check shade Back to Top • Jigger Dyeing Process   Set the bath at 30-40° c Add dissolved dye over 2 ends Add salt over 2 ends, run for a minimum 30 minutes ( 2 ends or More ) Add Alkali over 2 ends Run for a further 30-60 minutes ( 4 ends or More ) Rinse thoroughly and wash off Notes : With ' difficult' materials it may be advantageous to dye at 50°c. Raise temperature to 60°c for the last 20 minutes if Blue MGN used in mixtures   • Salt and alkali requirement   % Shade Salt Soda Ash Below 0.5% 30 gms/l 5 0.5 - Below 2% 40 gms/l 10 2.0 - below 4% 50 gms/l 15 Above 4% 60 gms/l 20 Camective dyes can be dyed by following two methods using Padding Mangle. Back to Top • Pad Batch Process   Camective M dyes X g/l Alkali See table Wetting agent 0.5 g/l Urea 50-200g/l (if required for solubility )   2-4 hours or 24 hours ( See table below for alternatives )   Padding Method Padding GPL Sodium Bi-carbonate GPL Soda Ash GPL Camective M' Dyes, 0-5 - 5 2-4 Hrs. batching 5-30 - Equal to weight of dye Cotton or Linen > 30 - 30         Camective M' Dyes, 0-5 4 1 24 Hrs. batching 5-30 4/5 weight of dye 1/5 weight of dye Cotton or Linen > 30 20 10         Blue MGN and       its Mixture 0-5 - 5 24 Hrs. batching 5-30 - Equal to weight of dye Cotton or Linen > 30 - 30 Back to Top • Pad Dry Process   Camective M dyes X g/l Sodium Bi-Carbonate 5g/l (for Xg/I less then Sg/I)   10g/l (for Xg/t above 5g/l) Wetting agent 0.5 g/l Urea 0-200g/l (if required for solubility )   2-4 hours or 24 hours ( See table below for alternatives )   • Printing Methods   Due to high reactivity of Camective M dyes the print paste stability is only a few hours and normally hydrolysis starts which leads to loss in colour strength. Hence care must be taken that printing is done as fast as possible after addition of Alkali. Different Printing Methods are (a) Print - dry - steam - wash - dry.   Recipe Camective M' Dyes - X Part   Urea - 50-75 Parts   Sodium Alginate (4%) - 400 Parts   Resist Salt - 10 Parts   Soda-bicarbonate - 10-12.5 Parts   Water - Rest   Total - 1000 Parts Process :- The Dye is mixed with urea and warm water is added and stirred well till dye dissolves completely. To this solution mixture of sodium alginate and Resist salt is added and stirred well just prior to printing. Pre dissolved soda bicarbonate is added and printing is done immediately to avoid any colour loss. Print the fabric with above paste and dry. The Prints must be evenly dried and care must be taken that they do not come in contact with acid fumes. Then steam the dried goods on rapid ager for 1 minute or similar equipment. The fabric is then given after treatment.   (b) Print - Dry - Bake - Wash - Dry   Recipe Camective M' Dyes - X Part   Urea - 150 Parts   Sodium Alginate (4%) - 400 Parts   Resist Salt - 10 Parts   Sodium-bicarbonate - 15 Parts   Water - Rest   Total - 1000 Parts   The process is similar to method (a) and baked here by as per the chart below.     Cotton Viscose Temperature 100° c 200° c 140° c 200° c Time 3 minutes 1 minute 3 minutes 1 minute   The goods are finally given after treatment. Back to Top (C) Print - Dry - Nippad - Dry - Wash - Dry The recipe is same as per method (a) except that instead of sodium bicarbonate soda ash 20g/l is used. The fabric is printed and dried. After drying the goods must not be stored for more time. The goods are then padded with solution containing 20 g/l soda ash. The padded goods are then dried on stenter or drying range, and then necessary after treatments are given.   (D) Pad - Dry - Print -Hang - Wash - Dry The recipe is same as in method (a) except that instead of soda bi-carbonate Soda ash is used. This method is for low end market where steaming and drying facility are not available, generally for hand processing units. In this method fabric is padded with solution of soda ash (20 g/l) and dried. The dried fabric is then printed with the print paste and dried by hanging in the open sunlight for about 5-6 hours During this drying condition fixation of dye takes place. The goods are then washed and dried.   (E) Print - Dry - Pad Batch - Wash - Dry   Recipe Camective M' Dyes - X Part   Urea - 100 Parts   Sodium Alginate (4%) - 400 Parts   Resist Salt - 10 Parts   Water - Rest   Total - 1000 Parts In this method the goods are first printed with the print paste and dried. It is then padded through sodium-silicate solution of 100 - 102°Tw and batched for 45 minutes. It is then washed and dried. Back to Top General Washing Method   In order to achieve maximum fastness properties a proper wash off is essential for the dyed and printed goods.   Minutes   10 Rinse Cold 10 Rinse Warm 15-30 Soap at the boil. For Very heavy depth shades soaping required twice. 10 Rinse Warm   Rinse Cold until clear solution is obtained.   For Medium to heavy shades an after treatment with 1 - 2 g/l dye fixing agent is given at room temperature (40°C at acidic pH of 5 - 5.5 to improve fastness properties.)       YELLOW M4G Reactive Yellow 22     YELOW M8G Reactive Yellow 86     YELLOW MGR Reactive Yellow 7     G. YELOW MR Reactive Yellow 44     YELLOW MX4R Reactive Orange 14     YELOW M3R Reactive Orange 86     ORANGE M2R Reactive Orange 4     RED M5B Reactive Red 2     RED M8B Reactive Red 11     BLUE MR Reactive Blue 4     NAVY BLUE M3R Reactive Blue 9     BLUE M2R Reactive Blue 81     BLUE MGN Reactive Blue 140     BLUE MX7R Reactive Blue 161     BLUE M4GD Reactive Blue 168     VIOLET C4R Reactive Violet 12     MEGENTA MB Reactive Violet 13   Back to Top