Direct Dyes

Direct Dyes

SAMPLE REQUEST

(Yellow 44L)/Fast Yellow 5GLL

(Yellow 142)/Supra Yellow PG

(Yellow 99)/Sun Yellow RCH

(Yellow 86)/Supra Yellow RL

(Yellow 106)/Yellow ARL

(Orange 39)/Supra Orange 2GL

CAS No.: 1325-54-8

(Orange 26)/Fast Orange S

(Red 23)/Fast Scarlet 4BS

CAS No.: 3441-14-3

(Red 80)/Supra Red 3BL

(Red 81)/Fast Red 5BL

(Red 31)/Red 12B

(Red 83)/Supra Rubine BL

(Red 89)/Supra Red FR

(Red 227)/Fast Rose FR

CAS No.: 60602-35-9

(Red 239)/Scarlet 6BS

(Red 254)/Pink RL

(Red 79)/Supra Red 6B

(Red 111)/Fast Red 2BS

(Red 224)/Red F2G

(Red 243)/Red BWS

(Violet 35)/Violet BL

(Violet 51)/Brill Helio B

(Violet 9)/Violet MB

(Voilet 66)/Fast Violet RR

(Blue 15)/Sky Blue

(Blue 71)/Fast Blue GLL

CAS No.: 4399-55-7

(Blue 86)/Turq. Blue GL

(Blue 199)/Supra Tq. Blue FBL

(Blue 80)/Blue 2RL

(Blue 151)/Blue FR

(Blue 218)/Blue 2G

(Blue 200)/Blue ABL

Blue 201

(Green 96)/Green 2BN

(Green 114)/Green

(Brown 210)/Brown GTL

CAS No.: 70892-30-7

(Brown 44)/Brown 2RGL

(Black 19)/Black G

(Black 80)/Black OB

CAS No.: 8003-69-8

(Black 155)/Black BF

(Black 22)/Black VSF

CAS No.: 61931-49-5

Trichomy

Medium Shades

Light Shades

Deep Shades

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Technical Shade Card

Comprehensive specifications and application methods for DYCROMINE Direct Dyes on Cotton

DYCROMINE

1. INTRODUCTION

Jagson Colorchem offers a wide range of DYCROMINE direct dyes for coloration cellulosic material. They are used for dyeing cotton, wool, silk viscose rayons, jute blends and union fabrics containing the cellulosic fibre using conventional equipment, for example becks, package dyeing machine winches, jigs and padding machines.

2. PREPARATION OF GOODS

It is necessary to remove all impurities from grey yarn or fabric to ensure level dyeing, good penetration of dyestuffs and maximum brightness of the shade. Size may be removed by boiling the goods in alkaline detergent solution. In case of bleached goods, it is advisable to wet the material with a suitable wetting agent, 0.75 g/l in hot and then it is rinsed in water.

3. DYEING METHODS

Two dyeing methods are recommended.

Dyeing Method No. 1:

The dyebath is prepared using X% - Dyestuffs 0.5-2.0% - Soda ash and 5.0-30.0% - Calcined Glauber's salt or common salt. The dyeing is started at 50°C, the temperature is raised to 90° - 95°C and the material is boiled for 45-60 minutes. The addition of salt should be made in gradual stages.

Dyeing Method No. 2:

Same as method No. 1, but without addition of Soda ash. This method is generally used which is described as under.

Dyeing Method No. 2 Process Diagram
Dyeing Method No. 2 Diagram

Illustration of temperature-time process (C, 100–40°C, A+B sequence, and salt additions B/C)

  • Set the dyebath at 40°C with required amount of water and dye.
  • Run for 10 minutes and add anhydrous Glauber's Salt (B).
  • Enter the goods and run for 10 minutes.
  • Raise the temperature to boil within 30 to 45 minutes.
  • Add anhydrous Glauber's Salt (C) and continue the dyeing for 30 minutes.
  • Decrease the temperature to 80°C within 10 minutes and continue the dyeing for 15 minutes.
  • Drain the dye bath at 70°C. Give two cold washes and dry.
  • If required, treatment of cationic dye fixing agent may be given to improve the fastness properties.

Note: High dye yield & the best reproducibility can only be achieved by a process-controlled cooling & holding phase at 80°C.

Shading: Cool to 70°C, add the shading dye, raise the temperature to 90°C in 15 mins. & treat as usual.

4. ILLUSTRATION

The shades shown in the shade card were prepared on unmercerised cotton fabric.

(The information in this shade card is given in good faith but without warranty, freedom from rights must not be assumed.)

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