Disperse Dyes

Disperse Dyes Importer & Supplier in Bangladesh

Disperse dyes have low solubility in water which is typically less than 1mg/L. To get better result from disperse dyes have to do the dyeing process in the high temperature like 120-130°C.

Use of Disperse Dyes

Disperse dyes in Bangladesh are used for dyeing synthetic fibers like polyester, nylon, acrylic and acetate rayon.

Polyester Dyeing and Processing:

Loading→Desizing, Scouring→Drying Presetting→Weight Reduced Process→Dyeing(or Printing)→Heat-setting→Finishing

Desizing, Scouring:

Process:

Detergent	0.25g/L
Soda Ash	2g/L
Caustic Soda	2g/L
Hydros	1g/L
Liquor Ratio	1:10
Temperature	80°C
Time	20min

Presetting

Process:

Temperature	180~210°C
Time	30~40 mins
Over feeding	about 10%

Weight-reduced Process:

Object: Polyester can be weight reduced to improve the softness, elasticity and the performance of absorbing moisture of the fabric under strong caustic condition

Note: A complete washing and neutralization is necessary for the later processing.

Dyeing Process

HTHP Dyeing:

SAHA Dyestuff	x%
Chelating Agent FFO	0.5g/L
Leveling Agent PES-H	1g/L
pH Buffer Solution	4.5~5.5

Thermosol Dyeing:

SAHA Dyestuff	x%
Anti-Migrant	1~5g/L
Wetting Agent	1~2g/L
Acetic Acid	4.0~5.5
Pick-up	65-70%
Dye Liquor Temperature	20-40°C
Drying	110°C
Curing Temperature	190~220°C
Curing Time	60~120 sec.
Washing
Reduction Clearing