Toynol® DS-2026 Wetting Dispersant for Resin-Free Color Paste
Toynol® DS-2026 Wetting and Dispersing Agent for Resin-Free Color Concentrates in Waterborne Systems
Abstract
Toynol® DS-2026 is a high-efficiency wetting and dispersing agent developed to solve pigment dispersion problems in the preparation of resin-free color concentrates in waterborne systems, specially optimized for the grinding dispersion of various color carbon blacks (low, medium, and high color). Its chemical description is an aqueous solution of a surfactant based on modified polystyrene-maleic anhydride polymer and polyether ester. Its core functions are significantly shortening grinding dispersion time, effectively reducing system viscosity, and improving color development and storage stability. The product achieves excellent grinding efficiency at relatively low dosage, effectively reducing floating and flooding, and its APEO-free environmental profile makes it a suitable option for producing high-performance waterborne resin-free carbon black and other pigment concentrates.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-2026 |
| Chemical Description | Aqueous solution of a surfactant based on modified polystyrene-maleic anhydride polymer and polyether ester |
| Appearance (25 °C) | Light yellow to yellow clear liquid |
| Non-volatile content (%) | 55 |
| Solvent | Water |
Key Performance Indicators
| Performance | Value |
|---|---|
| Applicable system | Waterborne systems, resin-free color concentrate preparation |
| Core functions | Wetting, dispersion, viscosity reduction, stabilization, improved color development |
| Highlight | Excellent performance on low, medium, and high color carbon blacks, with a wide dosage range |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency dispersion: Rapidly wets pigment particles, significantly shortens the dispersion time of carbon black and other pigments, reduces grinding system viscosity, and improves production efficiency.
- Good stability: Provides excellent stabilization, prevents pigment re-coarsening and settling, and ensures long-term storage stability of resin-free concentrates.
- Improved color development: Effectively reduces floating and flooding, improving the color performance of the final product.
- Environmentally friendly and safe: APEO-free formulation, compliant with environmental regulations.
Recommended Application Fields
- High-performance industrial coating concentrates: Especially suitable for the preparation of resin-free universal concentrates, particularly carbon black series concentrates, during the production of waterborne industrial coatings (such as construction machinery coatings, automotive coatings, metal protective coatings), ensuring concentrate compatibility and tinting stability in base paints.
- Ink-specific concentrates: Used in waterborne flexographic and gravure ink systems to efficiently disperse various color carbon blacks and prepare high-concentration, high-blackness core concentrates, ensuring ink printability and color performance.
- Coatings and paper coating: Suitable for paper coating, textile coating, and other fields requiring high-stability black paste, ensuring uniform coating color.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® DS-2026 dispersant must be added to water first and fully dissolved before the powdered pigment is added for grinding.
Synergistic use: It is recommended to add a Toynol® series wetting agent (recommended dosage 0.2-0.5%) and a defoamer (recommended dosage 0.3%) for better overall grinding results.
Recommended dosage (dispersant solids as a percentage of pigment weight):
- Low-color carbon black (pigment content 30-40%): 20% – 30%
- Medium-color carbon black (pigment content 25-30%): 30% – 50%
- High-color carbon black (pigment content 15-20%): 50% – 200%
- Note: The specific dosage should be determined through dosage screening based on the specific formulation and process.
Safety and Storage
- Safety precautions: Wear appropriate personal protective equipment (such as safety goggles and gloves) during handling. If the product contacts the skin, wash with water and soap; if it enters the eyes, rinse immediately with plenty of water and seek medical attention.
- Storage conditions: Store sealed in a dry, cool, well-ventilated place, away from heat, sparks and open flames. Avoid high temperatures and freezing.
- Packaging: 25 kg drums, 200 kg drums.
- Shelf life: Under the specified storage conditions, the shelf life is 24 months from the date of manufacture.
Frequently Asked Questions
Q: Why does DS-2026 particularly emphasize the preparation of “resin-free” concentrates? What are the advantages compared with resin-containing systems?
A: “Resin-free” concentrates are those that do not contain film-forming resin, whose stability relies entirely on the dispersant. The molecular structure of DS-2026 adsorbs strongly onto pigment surfaces and provides a strong stabilizing effect, independently and effectively preventing pigment particle re-agglomeration even without resin, thereby ensuring concentrate storage stability and application performance. The advantage is that concentrates are more universal and can be combined with many different types of base paints, simplifying production and management.
Q: Why do the recommended dosages of DS-2026 differ so greatly for low, medium, and high color carbon blacks?
A: This is mainly due to the huge differences in specific surface area among the different color carbon blacks. High-color carbon black has the smallest particle size and largest specific surface area, requiring more dispersant molecules to fully coat its surface to overcome its strong agglomeration tendency, hence the highest dosage ratio. Medium- and low-color carbon blacks have successively larger particle sizes and smaller specific surface areas, requiring correspondingly less dispersant. Following the recommended dosage range and conducting dosage screening is key to ensuring performance.
Q: The operating advice emphasizes “must be added to water before the powder and fully dissolved”. Why is this sequence so important?
A: This sequence is critical to ensure that dispersant molecules are fully and uniformly distributed in the water phase and can rapidly and evenly adsorb onto pigment surfaces at the moment water contacts the pigment powder, achieving optimum wetting and dispersion. If the sequence is reversed (pigment added before dispersant), the pigment particles may have already agglomerated irreversibly, and the dispersant added afterward can hardly open these agglomerates, impairing final dispersion efficiency and concentrate stability.
Q: Is it normal for concentrates prepared with DS-2026 to show slight settling after storage? How should it be handled?
A: For high-concentration concentrates, slight, loose settling after standing is a normal physical phenomenon and does not indicate dispersion failure. It can be easily redispersed by mechanical stirring before use. The core role of DS-2026 is to prevent the pigment from forming hard, non-redispersible sediment. If the settling is loose and easily stirred up, the dispersant is working well. If higher settling performance is required, an anti-settling agent can be added to the formulation as appropriate.
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