REACTIVE “ED” “SBG” & “SW” Dyes
- ED Range of Dyes is based on polyfunctional reactive chemistry
- Economic dyes with excellent build up in Deep Shades low recipe costs.
- Deepest black shade achievable
- High colour yield high strenght
- Good exhaustion & high Fixation, resultsin low effluent load.
- Meet the requirement of major ecology standards.
Dasage Of Salt And Soda
| % Depth Of Shde(o.w.f) | Salt (g/l) | % Depth Of Shde (g/l) |
| up to 0.5 | 30 | 10 |
| 0.5-1.0 | 35 | 15 |
| 1.0-2.0 | 50 | 15 |
| 2.0-4.0 | 60 | 20 |
| Above 4.0 | 80 | 20 |
Key To Addreviations
- ND = Non Dischargeable
- D = Dischargeable
- G = Good
- M = Medium
- F = Fair
- P = Poor
- S = Suitable
- NS = Non Suitable
- LS = Less Suitable
- L = Low (Reactivity)
Reactive Dyes
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Cold Brand “M” Type Dyes For Dyeing & Printing
General
Reactive (C) Dyes are used for cotton and viscose. These dyes react with cellulose fibre to produce very brilliant shades. Due to certain leaving group which can undergo nucleophilic displacement with hydroxyl group of cellulose and thus gives us best results to fastness.
Characteristics
- Suitable for normal temp. dyeing
- Easy to wash off
- Good wash fastness
- Can be used for dyeing & printing
- Highly economical dyes
Dyeing Process Of ‘C’ Cold Dyes
Jigger dyeing process (Normal room temp.) (Recommended m/l ratio (1:5 Or 1:10)
- 1st turn half dye solution
- 2nd turn half dye solution
- 3rd turn common salt/ glauber salt
- 4th turn half common salt/glauber salt
- 5th turn half soda ash solution
- 6th turn half soda ash solution
- 6th to 10th turn cold wash
- 11th turn cold wash
- 12th turn hot wash
- 12th to 13th turn soap at boil
- 14th turn hot wash
- 15th cold wash
Salt And Alkali Requirement Table
| Reactive ‘C’ Dyes | Common Salt / Glauber Salt | Soda Ash |
| up to 0.5 % | 30 gm/l Litre | 3 gm/l Litre |
| 0.5-2.0 % | 40 gm/l Litre | 4 gm/l Litre |
| 2.0-4.0 % | 50 gm/l Litre | 7 gm/l Litre |
| Above 5.0 % | 60 gm/l Litre | 10 gm/l Litre |
Printing With Reactive ‘C’ Cold Dyes
Dissolved the dyestuff in water. Add urea and start stirring. Further add water for complete dispersion. Add resist salt (Pre dissolved), Add thickening agent and make a uniform paste. Just before printing, add soda Bi-carb (Pre dissolved) in the above ready paste. Print out the fabric with this paste and dry it steam in ager for 10 to 15 minutes. Wash out with cold water and then boil water and then with soap – hot – wash – cold – wash and dry it.
NB : In cold brand, paste can not be stored after addition of alkali.
Preparation of Printing Paste Dyestuff X to X Part
Water 500 to 525 Part Urea 40 to 50 Part Resist salt 8 to 10 Part Soda Bi carb 10 to 15 Par Total volume made 1000 parts with printing paste (thickening)
Silicate Process For Printing
Dissolved required quantity of reactive ‘C’ cold brand dyes in hot water having temperature of 60 -70 C and check that no prescription remains in it. Filter the solution. Mix the solution with thickening help of stirrer and print out the fabric with ready paste. After dying pad the fabric with highly alkaline 48 TW0 – sodium silicate. Keep it in air tight for 20-24 hours. Wash it in continuous water and dry off.
Key To Addreviations
ND = Non Dischargeable D = Dischargeable G = Good M = Medium F = Fair P = Poor S = Suitable NS = Non Suitable LS = Less Suitable L = Low (Reactivity)
REACTIVE “ME” DYES “Bi-Functional Dyes”
“ME” Bifunctional Dyes
“ME” (Medium Exhaust) i.e. BIFUNCTIONAL Dye are low temperature high exhaust Reactive Dyes suitable for Dyeing Padding and printing of all dyes of cellulosic material. These dyes offer high grade of all round fastness properties.They offer leveling properties and excellent alkalis stability. Fixation temperature of these dyes is 60 -45 C.
Single Alkali Method
Salt and Alkali Requirements
| %Dye | Common Salt (g/l) | Soda Ash (g/l) |
| <0.1 | 30 | 5 |
| 0.1 – 0.5 | 20 – 25 | 5 – 7 |
| 0.5 – 1.0 | 25 – 40 | 7 – 10 |
| 1.0 – 2.0 | 40 – 50 | 10 – 13 |
| 2.0 – 3.0 | 50 – 60 | 13 – 15 |
| 3.0 – 5.0 | 60 – 80 | 15 – 20 |
| 5.0 – 7.0 | 80 – 90 | 20 |
| > 7.0 | 100 | 20 |
Mixed Alkali Method
Salt and Alkali Requirements
| %Dye | Common Salt (g/l) | Soda Ash (g/l) | Caustic Flakes (g/l) |
| <0.1 | 30 | 5 | 0 |
| 0.1 – 0.5 | 20 – 25 | 5 | 0.3 – 0.38 |
| 0.5 – 1.0 | 25 – 40 | 5 | 0.38 – 0.45 |
| 1.0 – 2.0 | 40 – 50 | 5 | 0.45 – 0.6 |
| 2.0 – 3.0 | 50 – 60 | 5 | 0.6 – 0.75 |
| 3.0 – 5.0 | 60 – 80 | 5 | 0.75 – 1.0 |
| 5.0 – 7.0 | 80 – 90 | 5 | 1.0 |
| > 7.0 | 100 | 5 | 1.0 |
Advantages Of “ME” Dyes
- Commodity bifunctional dyes for economical shades
- Wide range of products to cover broad shade gamut
- Good built-up behaviour for deep shades
- Good wash fastness levels & good reproductibility
Key To Addreviations
ND = Non Dischargeable D = Dischargeable G = Good M = Medium F = Fair P = Poor S = Suitable NS = Non Suitable LS = Less Suitable L = Low (Reactivity)
REACTIVE “P” DYES “Cynuric Hot Brand”
“P” & “H” Printing Dyes
“P & H” are PRINTING Dye Which are meant for Printing on Cellulose Textiles by both Dyeing as well as Printing Methods. These Dyes are MONO CHLOROTRIAZINE reactive dyes having a low reactivity and low substantivity, Since these dyes have low reactivity, they requre more severe conditions for fixation with cellulosic materials. “P & H” Series dyes react with cellulosic fiber in the presence of alkali and under the influence of heat. They are readily soluble by pouring water of 80°-85° C on powder and stirring well. The dyes contains very good fastness properties and suitable for printing cotton, viscose, cuprammonium rayons and natural silk.
Printing Processes
Print – Silicate
| Dye | X parts |
| Urea | 50 – 100 |
| Water | Y parts |
| Sodium Alginate Paste (6%) | 500 |
| Stock | 1000 |
Print – Dry – Pad Silicate (95° – 100° TW) Batch 16 hrs
Print – Dry – Steam / Print – Dry – Bake
| Substrate Cotton | Viscose | |
| Dye | X parts | X parts |
| Urea | 50 – 100 | 100 – 200 |
| Water | Y parts | Y parts |
| Sodium Alginate Paste (6%) | 500 | 500 |
| Resist Salt | 10 | 10 |
| Sodium bicarbonate or | 10 – 30 | 10 – 30 |
| Sodium carbonate | 8 – 20 | 8 – 20 |
| Stock | 1000 | 1000 |
Bicarbonate & Urea Requirement
| Dye (g / kg) | 1 – 10 | 11 – 30 | 31 – 40 | >40 | |
| Sodium Bicorbonate (g / kg) | 10 | 15 | 25 | 30 | |
| Urea (g / kg) | CO | 50 | 70 | 80 | 100 |
| CV | 100 | 140 | 170 | 200 | |
Print – Dry – Steam for 7 to 10 min at 102° – 100° C or Print – Dry – Bake 1 – 5 min at 200° – 150° C (Process not suitable for Viscose)
Pad – Dry – Steam (Cotton & Viscose)
Mixing pump required : Pad : dye, wetting agent, anti – migrant, mild oxidant, alkali Add Urea to improve solubility.
REACTIVE “RGB” DYES
1. GENERAL
Reactive RGB dye containing two or more than two different groups in each dye-molecule due to their varsetile Reactive Groups they are less sensitive to variations of the application-parameters such as liquor ratio, temperature, electrolyte, alkali and time
2. CHARACTERSTICS
- MOST SUITABLE FOR USE IN exhaust, cold, pad-batch and continues processes
- High soluble and high level of fixation is possible by yielding fast and hues
- They have higher all around fastness properties.
- Excellent wash-off properties
- Good wash fastness
- Low staining on multiple fibers
REACTIVE “RR” DYES
- GENERAL
Reactive RR dye containing two or more than two different groups in each dye-molecule due to their varsetile Reactive Groups they are less sensitive to variations of the application-parameters such as liquor ratio, temperature, electrolyte, alkali and time
- CHARACTERSTICS
- MOST SUITABLE FOR USE IN exhaust, cold, pad-batch and continues processes
- High soluble and high level of fixation is possible by yielding fast and hues
- They have higher all around fastness properties.
- Excellent wash-off properties
- Good wash fastness
- Low staining on multiple fibers
Key To Addreviations
ND = Non Dischargeable D = Dischargeable G = Good M = Medium F = Fair P = Poor S = Suitable NS = Non Suitable LS = Less Suitable L = Low (Reactivity)
REACTIVE “VINYL SULPFONE” Based Dyes
“VS” Vinyl Sulpfone Base Dyes
“VS” (Vinyl Sulfone) DYES are B. SULPHATOETHYL SULPH ONE Reactive Dyes possessing Vinyl sulphone as the reactive group. In presence of alkali, these dyes chemically react with the hydroxyl group of cellulose and form firm, convalent linkages. These dyes are having very good features like, good solubility even in presence of alkali, very good fastness property & suitable for resist & discharge printing very much effectively. These dyes are applied by exhaust method at the optimum temperature 0 of 60-65° C
Single Alkali Method
| %Dye | Common Salt (g/l) | Soda Ash (g/l) |
| <0.1 | 20 | 5 |
| 0.1 – 0.5 | 20 – 25 | 5 – 7 |
| 0.5 – 1.0 | 25 – 40 | 7 -10 |
| 1.0 – 2.0 | 40 – 50 | 10 – 13 |
| 2.0 – 3.0 | 50 – 60 | 13 – 15 |
| 3.0 – 5.0 | 60 – 80 | 15 – 20 |
| 5.0 – 7.0 | 80 – 90 | 20 |
| > 7.0 | 100 | 20 |
Mixed Alkali Method
| %Dye | Common Salt (g/l) | Soda Ash (g/l) | Caustic Flakes (g/l) |
| <0.1 | 30 | 5 | 0 |
| 0.1 – 0.5 | 20 – 25 | 5 | 0.3 – 0.38 |
| 0.5 – 1.0 | 25 – 40 | 5 | 0.38 – 0.45 |
| 1.0 – 2.0 | 40 – 50 | 5 | 0.45 – 0.6 |
| 2.0 – 3.0 | 50 – 60 | 5 | 0.6 – 0.75 |
| 3.0 – 5.0 | 60 – 80 | 5 | 0.75 – 1.0 |
| 5.0 – 7.0 | 80 – 90 | 5 | 1.0 |
| > 7.0 | 100 | 5 | 1.0 |
