BC-103

Purpose:

It is mainly used for the whitening and brightening of polyester fibers and its blending fabrics, especially suitable for whitening of polyester fiber knitted fabrics at low temperature (95-100℃).

Usage and use quantity: (for reference only)

1. Low temperature adsorption dip dyeing method:

Use quantity: 0.3-0.7% (o.w.f)

Bath ratio: 1∶10-20

Dyeing temperature: 95-100℃

Dyeing time: 30 - 40 minutes

PH value: 4.5 - 5.5 (adjusted with acetic acid)

Technological process: add additive, acetic acid (adjust PH: 4.5-5.5) and BC－103 whitening agent into the dye bath in accordance with the formula, increase temperature to 95-100℃ with a rate of 2-3℃ each minute, keep constant temperature for 30-40 minutes→cooling→washing→dehydration and stoving(80-100℃)，its whiteness can meet the requirements of users. If user has setting equipment, after washing and dehydration, conduct pre-drying (80－100℃), baking (170－175℃, 30－40s), its its whiteness can become better.

2. Pad dyeing method:

Use quantity: 1.5-4g/L

Process flow: two dip dyeing and two pad dyeing (mangle expression 70%) →pre-drying (100℃)→curing and setting (175－180℃, 30s).

3. HTHP dip dyeing method:

Use quantity: 0.2-0.5% (o.w.f)

Bath ratio: 1∶10-20

Dyeing temperature: 120-130℃

Dyeing time: 30 - 60 minutes

PH value: 4.5 - 5.5 (Adjusted with acetic acid)

Cautions:

1. If suspension liquid is found precipitated and separated, just shake it before use, which does not affect the use effect.

2. Please note that use this product within its yellow spot, i.e. pad dyeing ≤5g/l, dip dyeing ≤0.8% (o.w.f). If use this product beyond its yellow spot, it will be easy to become yellow.

Appearance: milky or yellowish pulpy liquid

Colored light: blue light

Granularity: 2μm or less ≥90%

PH value: 6 - 7

Proportion: 1.035±0.02

Ionicity: nonionic

5kg plastic bucket, 20kg /carton (4 buckets).

The shelf life is 8-12 months in the room temperature.