Toynol® DS-2558 Dispersant for Phthalocyanine Pigment Paste
Toynol® DS-2558 Dispersant for Phthalocyanine Pigment Concentrates in Waterborne Systems
Abstract
Toynol® DS-2558 is a high-efficiency wetting and dispersing agent developed to solve phthalocyanine pigment dispersion problems in the preparation of resin-free color concentrates in waterborne systems, specially optimized for high-performance organic pigments such as phthalocyanine blue and phthalocyanine green. 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 a dosage of 10-30%, effectively reducing floating and flooding, and its APEO-free environmental profile makes it a suitable option for producing high-performance waterborne phthalocyanine pigment resin-free concentrates.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-2558 |
| 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 (%) | 50 |
| 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 organic pigments such as phthalocyanine blue and phthalocyanine green |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency dispersion: Rapidly wets phthalocyanine pigment particles, significantly shortens dispersion time, reduces grinding system viscosity, and improves production efficiency.
- Excellent stability: Provides excellent dispersion stability at relatively low dosage, ensuring long-term storage of resin-free concentrates.
- Improved color development: Effectively reduces floating and flooding, significantly improving concentrate color development.
- 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 phthalocyanine pigment resin-free universal concentrates during the production of waterborne industrial coatings (such as OEM automotive paints, construction machinery coatings, coil coatings), efficiently dispersing high-performance organic pigments such as Phthalocyanine Blue 15:3 and Phthalocyanine Green 7, ensuring concentrate compatibility and tinting stability in various base paints.
- High-end waterborne inks: Used in waterborne flexographic and gravure ink systems to efficiently disperse phthalocyanine pigments and prepare high-concentration, high-vividness core concentrates, ensuring ink printability, color saturation, and storage stability.
- Architectural coating tinting systems: Suitable for interior and exterior wall latex paint tinting systems, producing phthalocyanine universal concentrates and ensuring concentrate compatibility and color consistency in various base paints.
- Paper coating and specialty coatings: Used in premium paper coating, textile coating, and other fields requiring high-stability blue and green pastes.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® DS-2558 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 (as-supplied dispersant as a percentage of the total formulation):
- Phthalocyanine blue (pigment content 45-50%): 10% – 30%
- Phthalocyanine green (pigment content 40-45%): 10% – 30%
- 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 is DS-2558 especially suitable for dispersing phthalocyanine blue and phthalocyanine green pigments?
A: Phthalocyanine pigments have specific crystal structures and surface properties, requiring a dispersant that can effectively adsorb and provide sufficient steric hindrance. The molecular structure of DS-2558 is specially designed so that its anchoring groups have excellent affinity for phthalocyanine pigment surfaces, forming a firm adsorption layer that effectively prevents pigment particle re-agglomeration, making it especially suitable for dispersing phthalocyanine pigments.
Q: When preparing resin-free concentrates, the recommended dosage range of DS-2558 is wide (10-30%). How is the optimum dosage determined?
A: The optimum dosage depends on the specific phthalocyanine pigment grade, target pigment concentration, and required concentrate performance. It is recommended to start dosage screening from an intermediate dosage of 15%, and determine the optimum economical dosage by testing fineness after grinding, viscosity, tinting strength, and post-storage stability. Insufficient dosage may lead to incomplete dispersion, while excessive dosage may affect film performance.
Q: The operating advice emphasizes that the additive must be added to water before the powder. Why is this sequence critical?
A: This sequence ensures that dispersant molecules are fully pre-dispersed and activated in the water phase. When the pigment is added, the dispersant can immediately and uniformly adsorb onto each pigment particle surface, achieving optimum wetting and separation. If the sequence is reversed, pigment particles will agglomerate first, and adding the dispersant afterward can hardly deagglomerate these clusters, impairing final dispersion efficiency.
Q: Is it normal for phthalocyanine blue concentrates prepared with DS-2558 to show slight color separation after storage?
A: For high-concentration organic pigment concentrates, extremely slight changes in color strength or slight settling after standing are possible physical phenomena and generally do not indicate dispersion failure. As long as the concentrate can be easily redispersed uniformly by simple stirring and the color recovers consistently, the dispersant is working well. The main role of DS-2558 is to prevent hard sediment and severe re-coarsening. If higher performance is required, an appropriate anti-settling agent can be combined.
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