COLORS FOR RIGHT FIRST TIME DYEING

F Dyes (Bifunctional)

Salient Features

Chemifix F Dyes

Chemifix 'F' Dyes are Hetero Bifunctional dyes. These dyes contain atleast one vinylsulfone and one monochlorotriazine reactive group and are mainly recommended for exhaust dyeing. These dyes can also be used in pad-batch (silicate method) and printing applications. 'F' dyes can be used in combination with vinlysulfone dues for producing mixture shades.

Salient Features

  • Suitable for exhaust dyeing at 60° C
  • Possible to produce deepest shades
  • Very much economical for medium and dark shades
  • Excellent shade build-up
  • Excellent solubility in water
  • Excellent levelling characteristics
  • Least sensitivity to variation in dyeing conditions
  • Very good fastness to washing, rubbing and light

Check our Products list below :: Chemifix F Dyes

Product Name Chemifix Yellow F-4G 150% Chemifix Yellow F3R 150% Chemifix Orange F2R 150% Chemifix Red F3B 150%
CI No. #Yellow 160A #Yellow 145A #Orange 122A #Red 195A
Shade ( % )

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1% -(all blacks 4.0%), 4% -(all blacks 8.0%) 1% 4% 1% 4% 1% 4% 1% 4%
General Properties
1/1 Standard Depth ( % Shade )        
In water at 30°c 100 150 60 150
with 50gpl Common Salt at 30°c 20 80 15 100
with 50gpl Glauber's Salt at 30°c 80 80 25 100
with 50gpl Common Salt & 20 gpl Soda Ash at 30°c 10 30 5 30
Exhaust Dyeing S S S S
Pad-Batch Dyeing LS S LS S
Exhaust Dyeing/Fixation Temp (c) 60°c 60°c 60°c 60°c
Preferred Electrolyte {Glauber's Salt / Common Salt} GS CS/GS GS CS/GS
Optimum % Shade for Economical Dyeing 6 6 5 6
Suitability for light / Pastel Shades LS S LS S
Dischargeability G F P P
Fastness Properties
Light (1.0%, 2.0% shade)
(ISO-105-B02)
5, 5-6 6, 6-7 4-5, 5 4-5, 5
(1.0%, 2.0% shade)
(AATCC, 16E, 20 AFU)
2-3, 3 4, 4 2-3, 3 2-3, 3-4
ISO-3 (Effect / Stain) 4-5, 4-5 4-5, 4 4-5, 4 4, 4
ISO-4 (Effect / Stain) 4, 3-4 4, 3-4 4, 3-4 4, 3-4
Acid (Effect / Stain) 4, 4 5, 4 4, 4 4, 4
Alkaline (Effect / Stain) 4, 4 5, 4 4, 3 4, 4
Rubbing {Dry / Wet} 4, 3 4, 3 4, 3 4, 3
Chlorinated Water (Effect / Stain) 2-3, 4 2-3, 4 2-3, 4 3, 4
Product Name Chemifix Red FRB 150% Chemifix Red FBSID Chemifix Navy Blue FBS Chemifix Blue HFBR Chemifix Black FGR 150%
CI No. #Red 198A #Red - 111 #Blue 222A #Blue 221 #Black
Shade ( % )

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1% -(all blacks 4.0%), 4% -(all blacks 8.0%) 1% 4% 1% 4% 1% 4% 1% 4% 1% 4%
General Properties
1/1 Standard Depth ( % Shade )          
In water at 30°c 100 100 100 100 100
with 50gpl Common Salt at 30°c 80 80 50 50 100
with 50gpl Glauber's Salt at 30°c 80 80 80 80 30
with 50gpl Common Salt & 20 gpl Soda Ash at 30°c 30 30 30 30 10
Exhaust Dyeing S S S S S
Pad-Batch Dyeing S LS S S LS
Exhaust Dyeing/Fixation Temp (c) 60°c 60°c 60°c 60°c 60°c
Preferred Electrolyte {Glauber's Salt / Common Salt} CS/GS CS/GS CS/GS CS/GS CS/GS
Optimum % Shade for Economical Dyeing 6 6 6 6 10
Suitability for light / Pastel Shades S S S S NS
Dischargeability P P F F P
Fastness Properties
Light (1.0%, 2.0% shade)
(ISO-105-B02)
4-5, 5 4, 5 5, 5-6 5, 5-6 5*
(1.0%, 2.0% shade)
(AATCC, 16E, 20 AFU)
2-3, 3 2-3, 3 3, 3-4 3, 3-4 3-4*
ISO-3 (Effect / Stain) 4-5, 4 4-5, 4 4, 4 4, 4 4, 3-4
ISO-4 (Effect / Stain) 4, 3-4 4, 3-4 4, 3-4 4, 3-4 4, 3
Acid (Effect / Stain) 4, 4 4, 4-5 4, 4 4, 4 4, 3-4
Alkaline (Effect / Stain) 4, 4 4, 4 4, 4 4, 4 4, 3-4
Rubbing {Dry / Wet} 4, 3 4, 3 4, 3-4 4, 3-4 3, 2-3*
Chlorinated Water (Effect / Stain) 2, 3-4 2-3, 3-4 2, 4 2, 4 3, 4

* Deep Black/ Deep Navy, for blacks at 8.0% shade

Key to Abbreviations: S = Suitable | LS = Less Suitable | NS = Not Suitable
Y = Yellower | D = Duller | W = Weaker
Dischargeability: G = Good | F = Fair | P = Poor

Exhaust Dyeing

Winch/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. Continue dyeing for 15 min. at room temperature and then add 1/5th alkali and raise temperature to 60° C in 20-30 min. and continue dyeing at 60° C for 20 min. Add remainging alkali in 2-3 portions and continue dyeing for 60-90 min.

Jigger Dyeing

Start dyeing at room temperature by adding the required amount of dyeing and salt over two ends. Then give two more ends and add half the amount of alkali over two ends and raise temperature to 60°C and add balance quantity of alkali over two ends and dye for further 4-6 ends, depending on the depth.

Salt and Alkali requirement

% Shade Common Salt g/l Soda Ash g/l
Upto 0.1 5 - 10 10
0.1 to 0.5 15 - 25 10 - 15
0.5 to 2.0 25 - 50 15 - 20
Above 2.0 60 < 20

Washing off

To achieve best possible fastness properties. it is essential to remove the unfixed/hydrolysed dye completely. Following sequence 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 non-ionic or anionic detergent or polymeric washing-off agent at boil for 15 min. (M.L:: 1:15 to 1:20)

Pad Batch Dyeing and Printing Methods generally used for Vinlysulfone reactive dyes can be used for 'F' dyes also.

Fastness Properties

Fastness of dyed material to various agencies was assessed as per the standard test methods, at 2% shade, mentioned below:

  • Washing: ISO-3 and ISO-4 (Ratings by greyscale: 1-poor, 5-excellent)
  • Rubbing: ISO 105X12 (Ratings by greyscale : 1-poor, 5-excellent)
  • Light: AATCC 16E 20AFU (For blacks at 8.0% shade) (Color change ratings by greyscale : 1-poor, 5-excellent)
  • Light (ISO 5/BO 2) : 1 to 8 in increasing order
  • Perspiration : ISO 105-E04 (Ratings by greyscale : 1-poor, 5-excellent)
  • Chlorinated Water : ISO 105-E03 (Ratings by greyscale : 1-poor, 5-excellent)

( 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.)

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