Vat Black 29(TDS)

Application and parameters of Vat Black 29

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Vat Black 29

TRADE NAME:
Vat Grey 6BG
Vat Grey BG

CAS NO: 4395-53-3

CI.NO: 65225

Molecular Formula: C45H20N2O5
Molecular Weight: 668.65
Shade: Blue light grey to navy blue.
COLOR TEMPLATE

Vat Black 29 Physical and Chemical properties

Dyeing depth g/L

40

Dyeing method

IW IN

Leuco color

Grey

Leveling property

▲▲

Dead cotton

Light (Xenon test 1/12)

6

Light (Xenon test 1/1)

7-8

Light (Xenon test 2/1)

8

Application Features

Dyeing Method

Dyeing Temperature(℃)

VAT Method

VAT Temperature(℃)

Levelness

Others

 

B method is most suitable, also can be used

C method

 

 

40~50,TheHighest 70

 

Dry cylinder, full bath

 

 

50~60

 

Good

 

 

Colour Fastness Test

 

Color Fastness

Soping(95℃)

Color Fastness

Rubbing

Ironing

 

Bleach resistant

Mercerizing

Standard Depth

1/12

Depth

Sample change

White stained

Sample change

White stained

 

Dry

 

Wet

 

 immediately

 

After 4h

 

Chlorine bleaching

 

Oxygen bleaching

Sample change

White stained

6~7

5

4~5

5

3~4

4

4~5

4~5

4

5

 

Vat Black 29(VAT grey BG) is generally black powder, insoluble in water, dark green in concentrated sulfuric acid, and dark green precipitate after dilution.

Vat Black 29 Application:

Mainly used for cotton fabric dyeing, suitable for suspension pad dyeing light gray and polyester/cotton blended fabric two bath process, a few used for cotton direct printing. Also applies to silk, viscose, cotton / viscose, Victoria / cotton blended fabric dyeing, mixed colors good.

Vat Black 29 Use condition:

1.Reduction of Vat Grey BG for jig dyeing and dyeing of cotton products, the most suitable b method, second law applies to the c. Dry cylinder reduction and full bath reduction can be used, reduction temperature 50 ~ 60 ℃ (b), 15 min enough time, stability time 40 min. As with dry cylinder reduction, also can be used at low temperature.

2.Reduction of cotton fiber of vat grey BG leuco affinity medium, good levelness, dyeing curve as shown in figure 4, 5-46. The dead cotton covered cover ability is poor. After dyeing with high temperature cook soap, soap and bath to make considered additions in sodium perborate can make normal light. Except for jig dyeing, dyeing cotton fabrics mainly used for suspension pad dyeing. Because of its resistance to chlorine bleaching, so it is suitable for color yarn dyed fabric.

3.After finishing with urea formaldehyde resin or cyanoformaldehyde resin, the printing and dyeing fabric of reduced BG gray color becomes slightly lighter and redder.

Precautions

1. The color fastness of VAT grey BG is slightly poor in mercerization, ironing and soaping. The washing fastness of domestic VAT grey BG is especially poor, with heavy mercerization and redness.The color turns slightly blue after soaping.

2.The reduced grey BG should be stored in a dry and ventilated place under seal.

Packing:

20 or 25kg/compound bag, carton box, iron drum, fiber durm for powder dye and 1000kg/tank for liquid dye

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