Toynol® HD-2202 Wetting Dispersant
Toynol® HD-2202 High-Performance Wetting and Dispersing Agent
Abstract
Toynol® HD-2202 is a high-efficiency wetting and dispersing agent developed to solve pigment dispersion problems in the preparation of resin-free color concentrates in waterborne systems, specially optimized for the grinding dispersion of medium and low color carbon blacks. Its chemical description is an aqueous solution of a surfactant based on methacrylate-acrylic acid polymer and polyether ester. Its core functions are significantly shortening dispersion time, effectively reducing system viscosity, and improving concentrate color development and storage stability. The product achieves excellent grinding efficiency at relatively low dosage, and its APEO-free environmental profile makes it a suitable option for producing high-performance waterborne carbon black and titanium dioxide concentrates.
Core Product Information
| Item | Specification |
|---|---|
| Model | HD-2202 |
| Chemical Description | Aqueous solution of a surfactant based on methacrylate-acrylic acid polymer and polyether ester |
| Appearance (25 °C) | Light yellow to yellow clear liquid |
| Non-volatile content (%) | 76 |
| Solvent | Water |
Key Performance Indicators
| Performance | Value |
|---|---|
| Applicable system | Waterborne systems, resin-free color concentrate preparation |
| Core functions | Wetting, dispersion, viscosity reduction, stabilization |
| Highlight | Excellent performance on medium and low color carbon blacks, low dosage, high efficiency |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency dispersion: Rapidly wets pigment particles, significantly shortens the dispersion time of carbon black and other pigments, reduces grinding system viscosity, and improves production efficiency.
- Good stability: Provides excellent steric stabilization, prevents pigment re-coarsening and settling, and ensures long-term storage stability of resin-free concentrates.
- Low dosage: Achieves significant results at relatively low dosage, helping reduce overall customer cost.
- Environmentally friendly and safe: APEO-free formulation, compliant with environmental regulations.
Recommended Application Fields
- Industrial coating concentrates: Especially suitable for the preparation of resin-free universal concentrates of titanium dioxide and medium and low color carbon blacks during the production of waterborne industrial coatings (such as construction machinery coatings, metal protective coatings), ensuring concentrate compatibility and tinting stability in base paints.
- Ink-specific concentrates: Used in waterborne flexographic and gravure ink systems to efficiently disperse carbon black pigments and prepare high-concentration, high-blackness core concentrates, ensuring ink printability and color performance.
- Coatings and paper coating: Suitable for paper coating, textile coating, and other fields requiring high-stability black or white paste, ensuring uniform coating color.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® HD-2202 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 and defoamer for better overall grinding results.
Recommended dosage (dispersant solids as a percentage of pigment weight):
- Medium and low color carbon black (pigment content ≤35%): 20% – 45%
- Titanium dioxide (pigment content ≤65%): 3.5% – 6%
- Other inorganic pigments: 1.5% – 5%
- 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 cool, well-ventilated, dry place, away from heat, sparks and open flames. Avoid high temperatures and freezing.
- Packaging: 25 kg drums, 200 kg drums, 1000 kg drums.
- Shelf life: Under the specified storage conditions, the shelf life is 24 months from the date of manufacture (for specific information, refer to the latest product label or TDS).
Frequently Asked Questions
Q: Why does HD-2202 particularly emphasize suitability for the preparation of “resin-free” concentrates?
A: “Resin-free” concentrates are those that do not contain film-forming resin, whose stability relies entirely on the dispersant. The molecular structure of HD-2202 adsorbs strongly onto pigment surfaces and provides a strong steric hindrance effect, independently and effectively preventing pigment particle re-agglomeration even without resin, thereby ensuring concentrate storage stability and application performance.
Q: For different medium and low color carbon blacks, how should the HD-2202 dosage be precisely selected?
A: Different brands and grades of medium and low color carbon blacks have differences in surface treatment and pore structure. Dosage screening within the recommended range of 20%-45% is recommended. Typically start from a 30% dosage, and determine the optimum economical dosage by testing the fineness and viscosity of the ground slurry and its post-storage stability (such as whether re-coarsening occurs).
Q: When preparing high-concentration titanium dioxide concentrate (≤65%) with HD-2202, what key points need special attention?
A: When preparing high-concentration titanium dioxide concentrate, the key is to ensure full contact between the dispersant and pigment. The operating advice must be strictly followed: first fully dissolve HD-2202 in water, then slowly add titanium dioxide, and use a high-speed disperser for thorough grinding. In addition, it is recommended to combine with a suitable wetting agent to promote initial wetting, and add a defoamer to eliminate bubbles from high-speed dispersion.
Q: This product has a non-volatile content as high as 76%. Is its viscosity high? Is pre-dilution needed before use?
A: This product is high-concentration but its viscosity is not high, satisfying most use scenarios and generally usable directly. If pre-dilution is needed for easier metering or dispersion, use deionized water and stir thoroughly. For the dilution ratio, consult our technical support, and use the diluted product as soon as possible.
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