Reactive Dyes – Shade Card

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Reactive Dyes are used for all cellulosic Fibers, Silk & Viscose Rayon. These colors react with cellulose in presence of alkali and also form chemical linkage resulting excellent fastness.

Reactive HE’ Dyes are reactive dyes containing Bismonochlorotriazinyl group as reactive redical and high fixation on dyeing fabric blends or, Terycot.These colours are suitable for exhaust dyeing (801C) of medium and heavy depths.

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Description

Reactive Dyes are used for all cellulosic Fibers, Silk & Viscose Rayon. These colors react with cellulose in presence of alkali and also form chemical linkage resulting excellent fastness.

Reactive HE’ Dyes are reactive dyes containing Bismonochlorotriazinyl group as reactive redical and high fixation on dyeing fabric blends or, Terycot.These colours are suitable for exhaust dyeing (801C) of medium and heavy depths.

Salt and Alkali Requirements :

Depth of Shade Salt gm per lit Soda Ash gm per
(O.W.F.) (Na2 .SO4) (Na2CO3)
0 – 0.5% 30 10
0.5 – 1.0% 45 15
1 – 2% 60 15
2 – 4% 70 20
Above 4% 90 20

Dyeing at 800C for 1 hour of the final alkali addition.

Reactive VS’ Dyes are reactive dyes containing Vinyl Sulfone groups as reactive radical Suitable for exhaust dyeing (60°C) , continuous dye­ing and printing.

Dyeing at 60°C

Material to Liquor Ratio 1:2 to 1:3 1:4 to 1:6
Glauber’s Salt gms/lit 50 50
30% NaOH Soin. ml/lit 3-6 2-3
+

Soda Ash

gms/lit 5 5
Trisodium Phosphate gms/lit 30 20-25

Dyeing at 600C for 60 minutes final alkali addition.

After-treatment

Rinse in cold water, Hot rinse, soap at boil with 2 gm/l neutral detergent for 15 minutes, Hot rinse, Cold rinse & Dry.

NOTES:

  1. For T. Blue G. dyeing use 50 gms/lit Glauber’s Salt for exhaustion and 15 to 20 gms/lit Soda Ash alongwith 3-5 gms/ lit NaOH (72°Tw) in last twc ends at 800C ‘or fixation.
  2. For Reactive Yellow FG, Red C2G & Red 5B, 80 gms/lit Glaubers Salt gives better colour yield.
  3. In case or Reactive Brill. Blue R only 1 quarter of required Salt is added over first and second turn. The remaining Salt is added only after the addition of Alkali.

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