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High color strength and excellent batch-to-batch consistency for reliable dyeing performance.
Superior lightfastness and wet fastness in acid dyeing applications on wool and nylon.
Good solubility and leveling properties, enabling uniform shade development on textile substrates.
Optimized for exhaust dyeing processes with efficient uptake and minimal bath waste.
Compliant with Oeko-Tex Standard 100 Class IV and meets stringent regulatory requirements for consumer textiles.
Acid dyeing of wool fibers in hosiery and apparel manufacturing.
Shade formulation for nylon 6 and nylon 6,6 in automotive interior textiles.
High-performance dyeing of blended wool-polyamide fabrics for premium outerwear.
Coloration of carpet yarns requiring durable violet shades with wash and light resistance.
Industrial dyeing of technical textiles used in filtration and protective clothing.
| Chemical Type | Acid dye (monoazo, metal-complex type) |
| Product Form | Free-flowing granular powder |
| Appearance | Violet to reddish-violet granules |
| Primary Applications | Wool, nylon, silk, and polyamide blends |
| Key Features | High tinctorial strength, good leveling, excellent reproducibility |
| Benefits | Reduced dyeing time, lower salt consumption, improved wastewater profile |
| Standard Packaging | 25 kg multi-wall paper bags with inner PE liner |
| Storage Conditions | Store in cool, dry, well-ventilated area; avoid direct sunlight and moisture |
Q1: What is the primary application field for Duasyn Acid Violet 4BN-IN?
A: Duasyn Acid Violet 4BN-IN is an acid dye pigment designed primarily for dyeing and printing polyamide (nylon) fibers and textiles, especially in high-fastness applications such as hosiery, sportswear, and technical fabrics where excellent wash and light fastness are required.
Q2: Is this pigment suitable for use in food-contact or medical-grade polymers?
A: No — Duasyn Acid Violet 4BN-IN is not intended for food-contact, pharmaceutical, or medical device applications. It is formulated for textile dyeing and industrial coloring where regulatory compliance for indirect food contact or biocompatibility is not required.
Q3: How should Duasyn Acid Violet 4BN-IN be dispersed and applied in nylon dyeing?
A: It is typically applied from aqueous solution under acidic conditions (pH 4–6), using common leveling and migration auxiliaries. Pre-dissolution with warm water and mild agitation is recommended to ensure complete dispersion before addition to the dye bath.
Q4: Does this pigment exhibit good compatibility with other acid dyes in mixed shades?
A: Yes — Duasyn Acid Violet 4BN-IN demonstrates good compatibility with many standard acid dyes used in polyamide dyeing, enabling reproducible level dyeing and stable mixed-shade formulations when appropriate pH control and temperature ramping are maintained.
Q5: What are the key fastness properties of this pigment on nylon substrates?
A: It offers very good to excellent wash fastness, light fastness, and wet rubbing resistance on properly prepared nylon 6 and nylon 6.6 substrates, particularly when fixed with conventional aftertreatments such as cationic fixatives or formaldehyde-free alternatives.
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E-mail: wangxingqiang@ericwchem.com
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