ESTC is propitious to bleaching processes for cellulose fibre or its cospinning fabrics. It is a stabilizer to suitable for width machine; package dyeing machine; CPB machine; rope fabric dyeing machine; jig dyeing machine and fast H2O2, Bleaching process. It can availably control H2O2 decomposition in the condition of alkali. And it can effective to keep the decomposition of H2O2; STC also can remove the nature coloring matter and other impurity in the mild condition. Moreover, it can avoid the fabric damage if H2O2 decomposes too fast. STC is a low dosage for use, no silicon spot creation, easy to removing, after bleach the fabric has a good handle, high whiteness, and it can avoid effected of colored spot on fabric.
Pre-treatment Products for each fabric & yarn as
Stabilizer of Hydrogen Peroxide
Trade Name: FORAS1N ESTC
Features
- Excellent effect for water-softening, Make the fabrics good handle and high whiteness
- Stability in acid which Ph range 3; Stability in hard water; Stability in alkali which 10 Be'
- It is suitable for each kinds process of H2O2 Bleaching
- STC can get a sequestration with Ca2+, Fe3+ and other impurities. Hereby it prevents H2O2 useless decomposition too fast.
- Excellent compatibility with anion/non surface active agent; reductive; oxidant
- Chelate metal impurity and control the resolvability of H2O2
- Compatibly for hydrogen peroxide bleaching Bath methodology of each fabric, it is reduce the damage of fabric and bring down the dosage of water-softener agent.
- Low foam behaviour.
Properties
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Composition |
Organic ploy-phosphate built |
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Appearance |
Colorless / light yellow lucidity liquid |
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lonicity |
Anion |
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PH range |
<2.0 |
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Solubility |
Miscible with cold water in any ratio |
Applications
1. Dipping method - scouring of yarn (fabric)
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Refining Agent EAL |
0.4~1g/l |
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Caustic soda |
2~4g/l |
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H2O2 (27.5%) |
4~8g/l |
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STC |
0.3~0.8g/l |
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Bath ratio |
1: 7-12 |
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Temperature |
95-98oC |
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Time |
45-60min |
2. Jig Dyeing
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|
|
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Refining Agent TEP40 |
2~4g/l |
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Caustic soda |
10~30g/l |
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H2O2 (27.5%) |
6~12g/l |
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ESTC |
2~4g/l |
Note:
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|
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Fabric must destarch before scouring & bleaching process, it can avoid sizing material deposition. If used in 3 in 1 process (Destarch, scouring and bleaching for one bath). The Sequester & Dispersant CG300 should add in bath about 1-3g/l, and heating from 40-50oC to 95-98oC. Souring & bleaching 60-120min. shower washing 4 times. Then neutralize solution and washing again by cold water. |
3. Continuous pad dyeing (3 in 1)
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|
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Refining Agent ETEP40 |
0.4~1g/l |
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NaOH |
2~4g/l |
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Sequester & Dispersant ECG300 |
4~8g/l |
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H2O2 (100%) |
0.3~0.8g/l |
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ESTC |
1: 7-12 |
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Grey (cloth) → rolling scouring liquid (pick up 90%) → steam(98-102oC , 45-60min) → washing |
4. CPB Process
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|
|
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Refining Agent ETEP40 |
6-10g/l |
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NaOH |
40-60g/l |
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Sequester & Dispersant ECG300 |
2-4g/l |
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H2O2 (100%) |
8-15g/l |
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ESTC |
5-10g/l |
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Grey (cloth) → rolling scouring liquid (pick up 90%) → Pile up (16-24h) → washing by warm water |
Package
120kgs/Drum as Non-hazardous material
Storage
180 days
