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Reactive High Exhaust (HE) Dyes are recommended for dyeing of Cellulosic materials i.e. Cotton and Viscose Rayon and their blends. This shade card illustrate (combination) High Exhaust Dyes with good allround fastness properties.
Preparation of Goods : Goods should be evenly desized, scoured and bleached to obtain good results. Mercerised cotton material will give more brighter shades and very good colour yeild.
Dyeing Method : Dissolve require amount of Dye using warm water at 60°C. Set the dye bath at 30-35°C with Common Salt or Glauber Salt. Add dissolved dye and start dyeing. Slowly raise temp. to 60°C within 20 minutes. Add disolved Soda Ash (Alkali) and raise temp. further to 80-90°C. Continue dyeing at 80-90°C for 30 minutes. Finally goods are washed off and give soaping at boil using 1-2 gpl Neutral Detergent.
Reactive HE Dyes : Are specially developed for high exhaution & high build up with better fastness properties, TIRUPATI TRAD. CO. has developed few popularshades which goes very well on cotton yarn, knitted fabric etc with very superior fastness properties
Salt And Alkali Requirement
Depth of Shade |
Salt g/l | Soda Ash g/l |
---|---|---|
Up to 0.5 % | 30 | 10 |
0.5 to 2.0 % | 50 | 15 |
2.0% to 4.0 % | 75 | 20 |
above 4,0% | 90 | 30 |
(WITHOUT WARRANTY)
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There dyes are having moderate reactivity and are widely used for dyeing & printing of cellulosic fibres for its very good fastness properties. These dyes are having very good features like good solubility, can be applied both by exhaust & padding methods and suitable for discharge printing very much effectively
1. EXHAUST DYEING METHOD :-
Set the dye bath at recommended temp. (40°/60°C) and add dye solution & other additives in the bath as under
Dyeing at 40°C - Dyeing time is 90 minutes
Jigger Dyeing | Winch Dyeing | ||
---|---|---|---|
Material : Liquor Ratio | 1 : 2 - 1 : 3 | 1 : 4 - 1 : 6 | 1 : 15 -1 : 30 |
Glauber Salt gms/lit. | 50 | 50 | 50 |
Soda Ash gms/lit. | 5 | 5 | 5 |
Caustic Soda 72° Tw ml/lit. | 4-6 | 3-4 | 1-2 |
or Tri Sod Phosphate gms/lit | - | 30 | 10-15 |
Dyeing at 60°C - Dyeing time is 60 minutes
Material : Liquor Ratio | 1 : 2 - 1 : 3 | 1 : 4 - 1 : 6 | 1 : 15 -1 : 30 |
---|---|---|---|
Glauber Salt gms/lit. | 50 | 50 | 50 |
Soda Ash gms/lit. | 5 | 5 | 5 |
Caustic Soda 72° Tw ml/lit. | 3-5 | 2-3 | 1 |
or Tri Sod Phosphate gms/lit | 30 | 20-25 | 5-10 |
After addition of alkali continue dyeing for 90 min.& 60min, respectively and wash,
2. PAD BATCH DYEING:-
(i) SHORT TIME PAD BATCH :
Dye stuff + Sod. Silicate 100gmsilit 100-106" Tw) + Caustic Soda (72°Tw) 15midit. —> 4 Hrs. Batch-—> Wash
(ii) ONE BATH-PAD BATCH PROCESS :
Dye stuff + Sod, Silicate (100-106 Tw) 100qms/lit + Caustic Soda (72°Tw) 5-10millit---> 24 Hrs. Batch---> Wash
(iii) ONE BATH-PAD-DRY SYSTEM PROCESS :
Dye Stuff + Urea 50 gmsilit + Sodium Bicarbonate 20-50 gmilit. + Resist Salt -10 gms/lit —> Dry —> Steam 3-4 min. at (100-105°C)-->Wash
(iv) TWO BATH-PAD-BATCH PROCESS:
Dye stuff--> Dry (1-3 min. at 150-200°C} —> Chemical Pad (Glauber's Salt-250 gms/lit + Caustic Soda 30 mifit.) —-> 2-4 Hrs. Batch —> Wash
These dyes are called as ‘COLD BRAND DYES’. These dyes are having good reactivity, fastness properties. These dyes require milder alkaline conditions for application & fixation at optimum temp. of 30-40°C.
1. EXHAUST DYEING PROCESS :
Setthe dye bath 30-40°C and add predissolved dyestuff then enter the material and run for 15 minutes. Add half of the predissolved Giauber's salt and continue dyeing for 15 min. Add remaining amount of predissolved salt and continue dyeing for further 15min. now add predissolved Soda Ash solution and continue dyeing for further 30-60 minutes and wash the material
SALT & ALKALI REQUIREMENT
Depth of Shade % | Salt (gms/ lit.) | Soda Ash (MCL Ratio) | |||
---|---|---|---|---|---|
1:5 | 1:10 | 1:15 | 1:30 | ||
Up to 0.5 | 0 | 5 | 5 | 3 | 2 |
0.5-1.0 | 40 | 10 | 5 | 4 | 2 |
1.0-2.0 | 50 | 15 | 10 | 8 | 4 |
2.0-4.0 | 60 | 20 | 15 | 10 | 5 |
Above 4.0 | 60 | 20 | 15 | 10 | 5 |
2. SEMI CONTINUOUS & CONTINUOUS PROCESS:
(i) PAD BATCH PROCESS
Dye Stuff + Sod. Bicarbonate & Soda Ash Mix (4:1) 5-30 gms/iit, —> 24 Hrs. Batch—> Wash,
(ii) PAD -DRY - BAKE PROCESS :
Dye stuff + Urea 50-200 gmsilit. + Sodium Bicarbonate 5-10 gimsilit. --> Dry —> Bake 1 min. at 200° C or (3 min. at - 150°C) -—> Wash
(iii) PAD - DRY - STEAM PROCESS:
Dye stuff + Urea 50-200 gmsilit, + Sodium Bicarbonate 5-10 gmsilit.> Dry —> Steam (7 min. at - 100-150°C) —> Wash.
(iv) PAD- DRY - PAD - STEAM PROCESS :
Dye stuff + Resist Salt 10 gmsilit. --> Dry --> Chemical Pad (Caustic Soda 2gmsilit, + Salt 200-300 gmsiit.) —> Dry —> Steam (7-10 min. at 100-105°C) -> Wash.
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These dyes are called as 'HOT BRAND DYES’. These dyes are applied under strong alkaline condition at high temp. of application compared to cold brand dyes. These dyes contains very good fastness properties. These dyes are suitable particularly for Printing, Cotton, Viscose, Cuprarnmonium rayons & natural silk. Dyeing process of these dyes is as below:
1. EXHAUST DYEING PROCESS:
Setthe dye bath at 50°C, add predissolved dyestuff, enter the material and run for 15 minutes. Add half of the predissotved Glauber's salt and continue dyeing. now gradually raise temp. to 80-85°C and in the mean time add remaining amount of predissolved salt and continue dyeing for 10 minutes further after maintaining temp. 80-85°C- now add soda ash solution and continue dyeing for 30-60 minutes maintaining temp, 80-85°C and wash the material,
SALT & ALKALI REQUIREMENT
Depth of Shade % | Salt (gms/ lit.) | Soda Ash (gms/lit.) |
---|---|---|
Up to 0.5 | 30 | 10 |
0.5-1.0 | 45 | 15 |
1.0-2.0 | 60 | 15 |
2.0-4.0 | 70 | 20 |
Above 4.0 | 90 | 20 |
2. SEMI CONTINUOUS AND CONTINUOUS PROCESS:
(i) PAD-BATCH-PROCESS :
Dye Stuff + Caustic Soda 15 gmsilit. + Glauber's salt 10-30 gms/lit. —-> 24 Hrs Batch —-> Wash
(ii) PAD - DRY - BAKE PROCESS :
Dye stuff + Urea 200gms/lit. + Soda Ash 10-20 gms/lit —>Dry --> Bake 30 Sec. at 200°C OR (3 min. at 150°C) ---> Wash
(iii) PAD-DRY-STEAM PROCESS:
Dye stuff + Soda Ash 10gms/lit. + Resist salt 10gms/lit.-—> Dry --> Steam (7-10 min. at 100-105°C) —-> Wash.
(iv) PAD- DRY -PAD- STEAM PROCESS:
Dye stuff + Resist salt 10qmsilit. —=Dry—> Chemical Pad (Caustic Soda 10-15 gmsilit. + Salt 200-300 gmsfit.) —> Dry ---> Steam —> (7-10 min, at 100-105°C) —> Wash
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BIFUNCTIONAL DYES ('ME' DYES)ME dyes ae low temp. high exhaust reactive dyes suitable for dyeing, padding and printing of all types of cellulosic material These dyes offer high grade of all round fastness properties. Theyoffer excellent leveling properties and excellent alkali stability, These dyes gives exceptionally good result on various textile printing including on discharge printing except RED which gives slight yellowsh stain, Fixation temp of these dyes Is 60-65°C.
1. EXHAUST DYEING PROCESS:
Set the dye bath at room temp. add predissolved Glauber's salt, now enter the material and run for 20 minutes, add half amount of dissolved Glauber's salt and continue dyeing now gradually raise temp to 60-65°C and add remaining amount of predisposed Glauber's salt after reaching 60°C temp. Continue dyeing for 15 min. further, now add soda ash solution and continue dyeing for 60 min. maintaining temp.60-65°C and wash the material
2. SEMI CONTINUOUS AND CONTINUOUS PROCESS Sameas As HE Dyes
KEY TO ABBREVIATIONS:
LIGHT 1-7 in increasing order (7 represents highest fastness
OTHER: 1-5 in increasing order (5 represents highest fastness
LS : Less Suitable, NS ; Not SUitable, S Suitable
BL: Blue, BK! Black,
Dischargeability : G - Good, F - Fair, P - Poor
PRINTING
These dyes react with ceflulosive fibers in presence of alkali & heat. The direct chemical linkage with result there by accounts for excellent fastness. The reaction between céliufosive fibres and Reactive range of dyes can be achieved by any of the following method
(1) ONE PHASE METHOD
(2) TWO PHASE METHOD
Printing Paste Recipe
One Phase method | Two Phese method | |
---|---|---|
Dyestuf | 10-60 | 10-60 |
Urea | 50-100 | 50-10 |
Hat Wester | 300 | 300 |
Thickner (Sodium Alginate 4%) |
350-400 | 350-400 |
Resist salt | 10 | 10 |
Sodium Bicarbonate | 15-30 | - |
Adjust remaining Volume by addition of water | ||
TOTAL | 1O0O PARTS | 1000 PARTS |
(1) ONE PHASE METHOD:
(2) TWO PHASE METHOD:
(i) Pad Silleate Batch Process Print (Dyestuff peste without alkali) --->Dry--->Silicate Pad (Sodium: Silicate 100-106°CTw j—-> 24 Hrs. Batch---> Wash
DISCHARGEPRINTING
VS. baged dyes are suitable for discharge printing. Cotton fabrics discharge is better than spun viscose fabrics. Prior to discharge printing the dyed fabric should be treated with resist salt 10gms/lit, to protect the dyed ground shade from reducing effect:
DISCHARGE PRINTING
VS. baged dyes are suitable for discharge printing. Cotton fabrics discharge is better than spun viscose fabrics. Prior to discharge printing the dyed fabric should be treated with resist salt 10gms/lit, to protect the dyed ground shade from reducing effect:
DISCHARGE PRINTING PASTE RECIPE
Thickner | 500 | Parts |
---|---|---|
Rangolite | 150-200 | '' |
Titanium Dioxide | 100 | '' |
Caustic Soda | 100-200 | '' |
Water | X | '' |
TOTAL | 1000 | Parts |
Dyed Pad---> Print(Discharge Printing Paste) —> Dry at (80-90° C) —->Steam for $10 min—>Wash
(The information given in the shade card is in good faith but without warranty)
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These dyes are suitable for dyeing cotton & other Celliulosic material. These dyes posses significantly higher exhaustion & fixation efficiency which results in apprecisble cost reduction in comparison to other conventional reactive dyes, The high fixation and good buildup are of particular importance when dyeing polyster/cellulosic blends where liquor to material ratio is quite high. Due to higher fixation of Reactive HE dyes, the drained and wash liquors after dyeing contain much less quantity of unfixed dyes in comparison to conventional reactive dyes. This facilities quicker wash off and efficient soaping. The improved Stabifity of HE dyes gives improved batch to batch consistency.
1. EXHAUST DYEING PROCESS :
Set dye bath at 50°C and add predissolved dyestuff, enter the material and run for 15 minuites. now add haif of the predissolved glauber’s salt and continue dyeing raise the temp to 80-45°C in the mean while add rernaining amountof predissolved giaub’ers salt and continue dyeing till temp 60-85°C is reached. Continue dyeng for further 15 minutes after getting temp. 80-85°C. nawadd soda ash solution and, Continue dyeing for-30-60 min. maintaining temp 80-85°C and wash the material,
SALT & ALKALI REQUIREMENT
Depth of Shade % | Salt (gms/ lit.) | Soda Ash (gms/lit.) |
---|---|---|
Up to 0.5 | 30 | 10 |
0.5-1.0 | 45 | 15 |
1.0-2.0 | 60 | 15 |
2.0-4.0 | 70 | 20 |
Above 4.0 | 90 | 20 |
2. SEMI CONTINUOUS AND CONTINOUS PROCESS:-
This Process for ‘HE' dyes is same as for Reactive "H’ Dyes.
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