Phosphorus-Free Chelating Dispersant

Description

Phosphorus-Free Chelating Dispersant‌ is a novel eco-friendly agent primarily designed to soften water by sequestering calcium, magnesium, and iron metal ions. It addresses quality issues arising from high water hardness, dyes, and processing factors during dyeing. Its core functions include:

Softening water in dye baths.

Chelating metal ions.

Dispersing dyes to prevent agglomeration.

Promoting uniform and progressive dye uptake on fibers.

Enhancing dyeing levelness.

Exhibiting broad pH compatibility.

Eliminating scale buildup in dyeing equipment.

Preventing fabric bleaching holes.

Improving color brightness.

Free from phosphorus and other environmentally hazardous components, it ensures safety and environmental compliance.

Properties‌

Composition‌: Special phosphate compounds

Appearance‌: Colorless transparent liquid

pH Value‌: 5.5±1

Solubility‌: Highly soluble in water

Key Features‌

1. Phosphorus-free and eco-friendly.

2. Applicable in pre-treatment and dyeing processes for cellulose fibers, polyester fibers, and blends.

3. Effectively chelates Ca²⁺, Mg²⁺, Fe²⁺/Fe³⁺ ions to soften water.

4. Strong dispersibility with anti-redeposition properties; prevents re-aggregation and deposition of decomposed dyes/impurities onto fibers during scouring and bleaching baths.

5. Enhances dye dispersion in dye baths, inhibits dye/salt re-agglomeration, improves levelness and color brightness, and prevents shade variation.

Application Method

Add to water before dyes/auxiliaries to optimize process efficacy

Batch pre-treatment bath: 0.5–2 g/L

Continuous pre-treatment bath: 1–5 g/L

Dye bath: 0.5–2 g/L

Post-bleaching/fluorescent whitening: Use 0.5–1.5 g/L at 80–90°C for 10–20 min to enhance whiteness, storage stability, and prevent yellowing

Post-dyeing rinse: Improves wash fastness

Adjust based on existing mill procedures.

Precautions‌

1. Conduct lab trials to determine optimal dosage.

2. Perform compatibility tests when used with other finishing agents.

Packaging & Storage‌

1. Storage:‌ Keep in a ‌cool, dry, ventilated‌ area; protect from sunlight and moisture. Shelf Life:‌ 6 months.

2. Packaging:‌ Polyethylene drum, ‌125 kg/drum‌.