Toynol® DS-192N Grinding Dispersant for Carbon Black
Toynol® DS-192N Grinding Dispersant for Carbon Black in Waterborne Systems
Abstract
Toynol® DS-192N is a high-efficiency grinding dispersant developed to solve the dispersion stability problems of carbon black pigment 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 carbon black dispersion efficiency, and ensuring long-term storage stability of high-concentration carbon black color concentrates. The product is especially suitable for preparing 40% concentration carbon black concentrates, achieving excellent results at a dosage of 20-50%, and its APEO-free environmental profile makes it a suitable option for carbon black pigment dispersion in waterborne coatings, inks, and other products.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-192N |
| 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 carbon black concentrates, improving color development |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency viscosity reduction: Significantly reduces carbon black grinding system viscosity, improves color development, and increases production efficiency.
- Lasting stability: Improves dispersion stability, prevents carbon black pigment re-coarsening and settling, and extends product shelf life.
- Suitable for high concentrations: Especially suitable for preparing high-concentration carbon black concentrates (up to 40% content).
- Environmentally friendly and safe: APEO-free and compliant with environmental regulations.
Recommended Application Fields
- Industrial coatings: Suitable for dispersing carbon black pigment in waterborne industrial coatings such as construction machinery coatings, automotive coatings, and metal protective coatings, improving tinting strength and blackness.
- Waterborne printing inks: Used for carbon black dispersion in waterborne flexographic and gravure inks, ensuring ink printability, blackness, and storage stability.
- Architectural coatings: Used for carbon black concentrate preparation in dark latex paints and exterior wall coatings, ensuring color uniformity and stability.
- Conductive materials: Suitable for preparing specialty materials such as conductive coatings and conductive inks that require carbon black coloring.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® DS-192N dispersant must be added to water first, followed by other additives, and finally the carbon black pigment is added for grinding.
Synergistic use:
- Combined with Toynol® wetting and dispersing agent LFS-090 to accelerate viscosity reduction (recommended dosage 1%)
- Add Toynol® defoamer Foamic 021 to eliminate process foam (recommended dosage 0.5%)
Recommended dosage:
- Resin-free dispersion: Carbon black (40% concentration): dispersant solids at 20-50% based on pigment weight
- Resin-containing dispersion: dispersant solids at 1-5% 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 is DS-192N dispersant especially suitable for carbon black pigment dispersion?
A: Carbon black pigment has a high specific surface area and a strong tendency to agglomerate, requiring a dispersant that can effectively adsorb and provide sufficient steric hindrance. The molecular structure of DS-192N is specially designed so that its anchoring groups have excellent affinity for carbon black surfaces, forming a firm adsorption layer that effectively prevents carbon black particle re-agglomeration.
Q: When preparing carbon black concentrate, how is the optimum dosage determined?
A: Dosage screening within the recommended range of 20-50% is recommended. Starting from 30%, 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-192N itself has a wetting function?
A: Yes. DS-192N 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 carbon black 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-090 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