Toynol® DS-255 Grinding Dispersant for Waterborne Systems
Toynol® DS-255 High-Performance Grinding Dispersant for Waterborne Systems
Abstract
Toynol® DS-255 is a high-efficiency grinding dispersant developed to solve pigment dispersion stability problems in the production of waterborne coatings, inks, and other fields. Its chemical description is a solution of an aminoalkyl hydroxyl adduct of polystyrene-maleic anhydride polymer. Its core functions are significantly reducing grinding viscosity, improving pigment dispersion efficiency, and ensuring long-term heat storage stability of concentrates. The product is especially suitable for preparing high-concentration concentrates and shows excellent performance across a variety of pigments including titanium dioxide, carbon black, phthalocyanine blue, phthalocyanine green, and organic red. Compared with conventional approaches, it is APEO-free, more environmentally friendly and safe, and is a suitable option for modern waterborne formulation systems pursuing high quality and stable production.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-255 |
| Chemical Description | Solution of an aminoalkyl hydroxyl adduct of polystyrene-maleic anhydride polymer |
| Appearance (25 °C) | Amber 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 | Excellent heat storage stability, suitable for high-concentration concentrates |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency dispersion: Rapidly wets pigment particles, significantly reduces grinding system viscosity, improves grinding efficiency, and improves concentrate color development.
- Lasting stability: Provides strong steric hindrance, prevents pigment re-coarsening and settling, and particularly improves concentrate stability after high-temperature storage.
- Broad-spectrum compatibility: Suitable for a variety of common pigments from inorganic to organic, including titanium dioxide, carbon black, phthalocyanine series, and organic pigments.
- Environmentally friendly and safe: APEO-free formulation, compliant with increasingly stringent environmental regulations.
Recommended Application Fields
- Waterborne industrial coatings: Used for grinding dispersion of titanium dioxide and various color pigments in formulations such as construction machinery coatings, automotive coatings, and coil coatings.
- Architectural coatings: Suitable for concentrate preparation in interior and exterior wall latex paints; especially suitable for producing universal tinting concentrates, ensuring their compatibility and stability in base paints.
- Packaging and printing inks: Used in the preparation of waterborne flexographic and gravure inks to effectively disperse organic pigments, ensuring ink color strength and printing smoothness.
- Waterborne adhesives: Used in adhesive products requiring colored systems, ensuring uniform pigment dispersion without affecting final product performance.
- Paper coating: Helps pigment dispersion in paper coating formulations to obtain a uniform, smooth coating.
Usage and Recommended Dosage
Addition sequence: For optimum performance, it is recommended to add the Toynol® DS-255 dispersant to water first, then the wetting agent and other additives, and finally the pigment for grinding.
Dilution: This product is an aqueous solution and can generally be used directly. If pre-dilution is needed, refer to the technical data or consult our technical support.
Recommended dosage:
- Resin-free dispersion (concentrate preparation):
Titanium dioxide: dispersant solids at 3-7% based on pigment weight
Carbon black: dispersant solids at 20-50% based on pigment weight
Phthalocyanine blue/green/organic red: dispersant solids at 15-50% 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. Recommended storage temperature range: 5 °C – 40 °C.
- Packaging: 25 kg drums, 200 kg drums.
- Shelf life: Under the specified storage conditions, the shelf life is 2 years from the date of manufacture.
Frequently Asked Questions
Q: What types of carbon black is DS-255 dispersant suitable for?
A: DS-255 performs well on a variety of carbon blacks, such as Mitsubishi MA100 and other medium-to-high color carbon blacks. For different carbon black grades, determine the optimum dosage through testing to achieve the desired viscosity reduction and dispersion stability.
Q: How long can concentrates prepared with DS-255 be stored under high-temperature conditions (e.g., 50 °C)?
A: One of the core advantages of DS-255 is improved heat storage stability. In 50 °C heat storage tests, qualified concentrates prepared with it can typically remain stable for more than 2 weeks without significant re-coarsening, settling, or drastic viscosity change, equivalent to several months of stability at room temperature. However, the specific duration depends on the pigment concentration and overall formulation.
Q: In resin-containing coating formulations with direct grinding, how should the DS-255 dosage be determined?
A: In resin-containing grinding systems, the recommended DS-255 solids dosage is 1%-5% of the total formulation. When determining the dosage, consider the resin’s inherent dispersing ability and the target pigment proportion. We recommend starting dosage screening from 2%, and finding the optimum balance by testing grinding fineness, gloss, and storage stability.
Q: Can DS-255 be used synergistically with other additives (such as wetting agents and defoamers)?
A: Yes, and synergistic use is recommended. For best results, combine with Toynol® wetting agent LFS-1907 to accelerate pigment wetting, and add a Toynol® defoamer (such as Foamic 021) to eliminate foam generated during grinding. In terms of addition sequence, add the dispersant and wetting agent first, and finally add the defoamer before grinding.
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