Toynol® DS-260 Grinding Dispersant for Waterborne Systems
Toynol® DS-260 High-Performance Grinding Dispersant for Waterborne Systems
Abstract
Toynol® DS-260 is a high-efficiency grinding dispersant developed to solve pigment dispersion stability problems in the production of waterborne coatings, inks, and adhesives. Its chemical description is a solution of an aminoalkyl hydroxyl adduct of polystyrene-maleic anhydride polymer. Its core functions are significantly reducing grinding system viscosity, improving pigment dispersion efficiency, and ensuring high-concentration concentrates have excellent heat and storage stability. The product is highly versatile, performing excellently on various inorganic and organic pigments such as titanium dioxide, carbon black, and organic red, and is especially skilled at handling high-concentration carbon black concentrates. It is APEO-free, in line with environmental trends, and is a suitable option for modern waterborne formulation systems pursuing high tinting strength and stable production.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-260 |
| Chemical Description | Solution of an aminoalkyl hydroxyl adduct of polystyrene-maleic anhydride polymer |
| Appearance (25 °C) | Yellow-brown translucent liquid |
| Non-volatile content (%) | 40 |
| Solvent | Water |
Key Performance Indicators
| Performance | Value |
|---|---|
| Applicable system | Waterborne systems |
| Core functions | Grinding dispersion, viscosity reduction, stabilization |
| Highlight | Especially suitable for preparing high-concentration carbon black concentrates, improving color development |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency viscosity reduction and dispersion: Rapidly wets pigment particles, significantly reduces the viscosity of high-pigment-content grinding systems, improves grinding efficiency, and improves concentrate color development.
- Excellent stability: Provides strong steric hindrance, effectively prevents pigment re-coarsening and settling, and is especially suitable for preparing high-concentration concentrates while ensuring long-term storage stability.
- Carbon black specialty: Shows exceptional dispersion performance on hard-to-disperse pigments such as carbon black, making it the preferred choice for preparing high-concentration carbon black concentrates.
- Environmentally friendly and safe: APEO-free formulation, compliant with increasingly stringent environmental regulations.
Recommended Application Fields
- High-performance industrial coatings: Especially suitable for construction machinery coatings, automotive coatings, coil coatings, and others requiring high tinting strength or dark coatings, efficiently dispersing carbon black and other pigments for excellent hiding power and blackness.
- Universal concentrates: A well-suited dispersant for coating and concentrate plants producing universal tinting concentrates (especially high-concentration black and red pastes), ensuring concentrate compatibility and stability in multiple base paints.
- High-end waterborne inks: Used in the preparation of waterborne flexographic and gravure inks to effectively and stably disperse high-content carbon black, organic red, and other pigments, ensuring ink color strength, printability, and storage stability.
- Waterborne adhesives: Used in high-performance adhesive products requiring coloring, ensuring high-concentration pigments are uniformly and stably dispersed without affecting final product performance.
- Architectural coatings: Suitable for concentrate preparation in interior and exterior wall latex paints, especially dark paint formulations, ensuring color stability.
Usage and Recommended Dosage
Addition sequence: For optimum performance, it is recommended to add the Toynol® DS-260 dispersant to water first, then the wetting agent and other additives, and finally the pigment for grinding.
Synergistic use: It is recommended to combine with Toynol® wetting agent FS-204E to accelerate wetting, and add Toynol® defoamer Foamic 021 to eliminate grinding foam.
Recommended dosage:
- Resin-free dispersion (concentrate preparation):
Titanium dioxide (70% concentration): dispersant solids at 3-7% based on pigment weight
Carbon black (40% concentration): dispersant solids at 20-50% based on pigment weight
Organic red (45% concentration): dispersant solids at 25-50% based on pigment weight
- Resin-containing dispersion (direct grinding): dispersant solids at 1-5% of the total formulation
- Note: The above are empirical dosages; the optimum dosage should be determined through testing 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 cool, well-ventilated, dry place, away from 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-260 dispersant perform especially well on carbon black pigment?
A: Carbon black pigment has a large specific surface area and agglomerates easily, making it one of the more difficult pigments to disperse. The molecular structure of DS-260 is optimized to adsorb strongly onto carbon black particle surfaces, forming an effective steric hindrance layer, thereby significantly reducing grinding viscosity and preventing particle re-agglomeration, making it especially suitable for preparing high-concentration, high-tinting-strength carbon black concentrates.
Q: When using DS-260, why is it recommended to combine it with wetting agent FS-204E and defoamer Foamic 021?
A: This is an optimized additive combination. FS-204E wetting agent accelerates the initial wetting of pigments, working synergistically with DS-260 to further improve dispersion efficiency; since foaming easily occurs during grinding, Foamic 021 effectively eliminates this foam, preventing bubbles from affecting grinding results and final product quality. The correct addition sequence is key to achieving this synergy.
Q: The DS-260 dosage varies greatly for different pigments. How is the optimum dosage determined?
A: The dosage mainly depends on the pigment’s specific surface area and surface chemical properties. The larger the specific surface area (such as carbon black and organic pigments), the more dispersant is needed to coat its surface. Within the provided dosage range, start dosage screening from the midpoint and determine the optimum economical dosage by testing grinding fineness, viscosity, and storage stability.
Q: If the stored DS-260 product shows slight property changes, will it affect use?
A: This product is a polymer solution; after long-term standing, slight changes in uniformity or viscosity may occur, which is a reversible physical phenomenon. Stir thoroughly before use; its chemical performance and dispersion effect are generally unaffected. If the change is abnormal or uncertain, a small-scale test or consulting our technical support is recommended.
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