Toynol® DS-165A Grinding Dispersant for Waterborne Systems
Toynol® DS-165A High-Performance Grinding Dispersant for Waterborne Systems
Abstract
Toynol® DS-165A is a high-performance dispersant developed to solve pigment dispersion stability problems in waterborne systems. Its chemical description is a combination of a maleic acid-styrene modified copolymer and a surfactant, and its core functions are stabilizing pigment dispersion through strong charge repulsion, significantly reducing grinding system viscosity, and improving color development and compatibility. Compared with conventional approaches, it offers a wide applicable pH range, suitability for a variety of powders, and is APEO-free, making it a suitable option for waterborne printing inks, industrial coatings, leather finishing, and other fields.
Key Performance Indicators
| Performance | DS-165A |
|---|---|
| Dispersion stability | Effectively prevents pigment re-coarsening and settling through charge repulsion |
| Viscosity control | Significantly reduces the viscosity of high-solids grinding systems, improving production efficiency |
| pH adaptability | Wide pH range applicability (refer to the TDS for the specific range) |
| Compatibility | Good compatibility when blended with various waterborne resins |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency charge repulsion: Prevents pigment flocculation through strong charge repulsion, improving dispersion stability.
- Significant viscosity reduction: Effectively reduces grinding viscosity, suitable for high-concentration color concentrate preparation.
- Broad-spectrum applicability: Suitable for iron oxide, titanium dioxide, carbon black, and various organic pigments.
- Process-friendly: No separate wetting agent needed, simplifying the formulation process.
Recommended Application Fields
- Waterborne printing inks: Used in flexographic and gravure printing inks to disperse organic pigments and carbon black, improving ink color saturation and printability; suitable for packaging printing, publication printing, and other applications.
- Architectural coatings: Disperses titanium dioxide, iron oxide, and other pigments in interior and exterior wall latex paints, preventing floating and flooding and improving coating uniformity and hiding power.
- Wood and furniture coatings: Used in waterborne wood coatings to optimize pigment dispersion and improve tinting strength and leveling; suitable for solid wood furniture, cabinets, and other surface finishing.
- Industrial coatings: Disperses pigments in construction machinery coatings and automotive coatings, enhancing coating appearance consistency and durability.
- Anticorrosive coatings: Used in industrial protection systems to disperse anticorrosive pigments, improving coating barrier properties and service life.
- Leather coatings: Improves pigment penetration and coating feel in leather finishing; suitable for footwear, bags, and other high-end products.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the DS-165 series dispersant must be added to water first and fully dissolved before adding the resin and pigment for grinding.
Synergistic optimization:
- Adding a Toynol® wetting agent can accelerate pigment wetting (recommended dosage 0.1%-0.5%).
- Adding a Toynol® defoamer can eliminate grinding foam (recommended dosage 0.3%-0.8%).
Recommended dosage (calculated on solids content, based on pigment weight):
- Iron oxide pigments: 20%-50%
- Titanium dioxide: 3%-7%
- Carbon black and organic pigments: determined through dosage screening (recommended range 10%-40%)
Experimental tip: The optimum dosage should be determined through dosage screening based on the specific system.
Safety and Storage
- Safety precautions: Wear safety goggles and gloves during handling. If the product contacts the skin, rinse immediately with water; if it enters the eyes, rinse with plenty of water and seek medical attention.
- Storage conditions: Store sealed in a cool, well-ventilated, dry place, away from heat, sparks and open flames. Avoid high temperatures and freezing.
- Packaging: 25 kg drums, 200 kg drums.
- Shelf life: Under proper storage conditions, the shelf life is 24 months from the date of manufacture.
Frequently Asked Questions
Q: Does this product need to be used within a specific pH range?
A: DS-165A has broad pH adaptability and works stably in most waterborne systems (pH 5-10). For strongly acidic or alkaline environments, a preliminary compatibility test is recommended.
Q: Why emphasize “must be added to water before the resin and pigment”?
A: This sequence ensures the dispersant is fully dissolved and evenly distributed, so that it immediately adsorbs onto the pigment surface when the pigment is added, achieving rapid wetting and stable dispersion. Reversing the sequence may cause pigment agglomeration and impair dispersion.
Q: How is the optimum dosage of carbon black pigment determined through testing?
A: It is recommended to start from a 20% dosage and prepare screening samples (20%, 30%, 40%), then determine the optimum ratio by testing grinding fineness, viscosity, and storage stability (such as a centrifugation test).
Contact Us
- If you need free samples, a detailed Technical Data Sheet (TDS), or a Safety Data Sheet (SDS), or if you have any technical questions, please contact us at any time:
- Company: Tianjin Hi-Perferal Advanced Materials Co., Ltd.
- Address: No. 2-1, Zhenghua Road, Caozili, Wuqing District, Tianjin
- Technical service hotline: 022-82910362
- Website: www.surfychem.com