Toynol® DS-192M Grinding Dispersant for Inorganic Pigments
Toynol® DS-192M Grinding Dispersant for Inorganic Pigments in Waterborne Systems
Abstract
Toynol® DS-192M is a high-efficiency grinding dispersant developed to solve the dispersion stability problems of inorganic pigments in waterborne systems. 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 long-term storage stability of high-concentration inorganic color concentrates. The product is especially suitable for treating pigments such as titanium dioxide and inorganic fillers, achieving excellent results at a dosage of 3-7%, and its APEO-free environmental profile makes it a suitable option for inorganic pigment dispersion in high-performance waterborne coatings, inks, and other products.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-192M |
| Chemical Description | Solution of an aminoalkyl hydroxyl adduct of polystyrene-maleic anhydride polymer |
| Appearance (25 °C) | Yellow 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 inorganic color concentrates |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency viscosity reduction: Significantly reduces grinding system viscosity, improves color development, and increases production efficiency.
- Lasting stability: Improves dispersion stability, prevents pigment settling and re-coarsening, and extends product shelf life.
- Suitable for high concentrations: Especially suitable for preparing high-concentration inorganic color concentrates, such as 70% titanium dioxide concentrate.
- Environmentally friendly and safe: APEO-free and compliant with environmental regulations.
Recommended Application Fields
- Architectural coatings: Suitable for dispersing titanium dioxide and inorganic fillers in interior and exterior wall latex paints; especially suitable for producing high-concentration white paste, ensuring hiding power and whiteness.
- Industrial coatings: Used for dispersing inorganic pigments in waterborne industrial coatings such as construction machinery coatings and metal protective coatings, improving tinting strength and stability.
- Waterborne printing inks: Suitable for inorganic pigment dispersion in waterborne flexographic and gravure inks, ensuring ink printability and color performance.
- Paper coating: Used for dispersing inorganic pigments in paper coating formulations to obtain a uniform, smooth coating.
- Building materials: Suitable for dispersing inorganic pigments in building materials such as cement-based coatings and mineral coatings.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® DS-192M dispersant must be added to water first, followed by other additives, and finally the pigment is added for grinding.
Synergistic use: Can be combined with Toynol® wetting and dispersing agent LFS-209 to accelerate viscosity reduction, and Toynol® defoamer Foamic 021 to eliminate process foam.
Recommended dosage:
- Resin-free dispersion:
Titanium dioxide (70% concentration): dispersant solids at 3-7% based on pigment weight
Inorganic fillers: dispersant solids at 2-6% based on pigment weight
- Resin-containing dispersion: dispersant solids at 0.3-1% of the total formulation
- Note: The above are empirical dosages; the optimum dosage should be determined through testing.
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-192M dispersant particularly emphasize suitability for inorganic pigments?
A: Inorganic pigments such as titanium dioxide and inorganic fillers have specific surface properties and crystal structures, requiring a dispersant that can effectively adsorb and provide sufficient steric hindrance. The molecular structure of DS-192M is specially designed so that its anchoring groups have excellent affinity for inorganic pigment surfaces, forming a firm adsorption layer that effectively prevents pigment particle re-agglomeration.
Q: When preparing high-concentration titanium dioxide concentrate (70%), how is the optimum dosage determined?
A: Dosage screening within the recommended range of 3-7% is recommended. Starting from 5%, 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 product description mentions “no separate wetting agent needed”. Does this mean DS-192M itself has a wetting function?
A: Yes. DS-192M is designed to combine both wetting and dispersing functions, and its molecular structure contains groups that can lower surface tension and promote pigment wetting. For most inorganic pigment systems, good results can be obtained without an additional wetting agent, which helps simplify the formulation and reduce cost.
Q: If dispersion efficiency needs to be further improved, how should other additives be combined?
A: To accelerate viscosity reduction, Toynol® wetting and dispersing agent LFS-209 can be combined (recommended dosage 1%); to eliminate foam generated during grinding, Toynol® defoamer Foamic 021 can be added (recommended dosage 0.5%). Note the addition sequence: add the dispersant first, then other additives, and finally the pigment.
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