Levelling agent

Levelling agent for direct dyestuffs

Chemical Characteristics:

Alkylpolyglycolether with defoamer (DHK 117)

Typical Data

Appearance: turbid, liquid
                PH : 5-7
                Ionic nature: non-ionic
                Shelf life: 6 months in closed original containers
                Dissolving procedure: dilute with warm water at 1:3-1:10
 Properties: 

   reduces the soiling of the white cotton weft as well as pocket lining of jeans in scouring
    shows excellent wetting, scouring and dispersing properties in cold and warm baths
    is low-foaming and, therefore, suitable for use on drum type washing machines
    is compatible with enzymes based on amylases and cellulases

Application:

Low-foaming wetting, scouring and dispersing agent for increased contrast in jeans treatment;leveling agent for direct dyestuffs

Desizing:

2 g/l DHK 188

2 g/l DHK 117

10 - 15 min / 60 °C, rinse.

Stone-wash:

1.0 - 2.5 g/l DHK 1533 or 1534

0.5 - 1.0 g/l DHK 117

20 - 45 min / 55 °C,

rinse and afterscour.

Afterscouring of jeans fabric:

0.5 - 1 g/l DHK 117

0.5 - 2 g/l alkali (soda ash, caustic soda)

0 - 2 g/l hydrogen peroxide 35 %

X g/l optical brightener, if necessary

10 - 20 min / 60 °C

At low temperatures and without hydrogen peroxide the contrast improvement is

less. Levelling agent for direct dyestuffs: DHK 117 is used in concentrations of

1 - 2 g/l for levelling of direct dyestuffs in dyeing of cellulosic fibers.

DHK 117 retards the dyestrike and increases dye migration. Thus more level and

even dyeings are produced. Advantageously

dyeing is started without salt. For better dye exhaustion salt is added later in the

dyeing cycle. Very light dyeings also may be produced without salt addition if

levelling is a problem.