Toynol® HD-2602 Wetting Dispersant for Resin-Free Color Paste
Toynol® HD-2602 Wetting and Dispersing Agent for Resin-Free Color Concentrates in Waterborne Systems
Abstract
Toynol® HD-2602 is a high-efficiency wetting and dispersing agent developed to solve organic pigment dispersion problems in the preparation of resin-free color concentrates in waterborne systems, specially optimized for high-performance organic pigments such as PR254, PY83, and PR170. Its chemical description is an aqueous solution of a surfactant based on modified polystyrene-maleic anhydride polymer and polyether ester. Its core functions are significantly shortening organic pigment 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 organic pigment resin-free concentrates.
Core Product Information
| Item | Specification |
|---|---|
| Model | HD-2602 |
| Chemical Description | Aqueous solution of a surfactant based on modified polystyrene-maleic anhydride polymer and polyether ester |
| Appearance (25 °C) | Light yellow to yellow clear liquid |
| Non-volatile content (%) | 60 |
| Solvent | Water |
Key Performance Indicators
| Performance | Value |
|---|---|
| Applicable system | Waterborne systems, resin-free color concentrate preparation |
| Core functions | Wetting, dispersion, viscosity reduction, stabilization, improved color development |
| Highlight | Excellent performance on organic pigments, low dosage, high efficiency |
| Environmental properties | APEO-free |
Main Features and Advantages
- High-efficiency dispersion: Rapidly wets organic pigment particles, significantly shortens dispersion time, reduces grinding system viscosity, and improves production efficiency.
- Good stability: Provides excellent stabilization, prevents pigment re-coarsening and settling, and ensures long-term storage stability of resin-free concentrates.
- Improved color development: Effectively improves concentrate color development, making the final product more vivid and full.
- Environmentally friendly and safe: APEO-free formulation, compliant with environmental regulations.
Recommended Application Fields
- High-performance industrial coating concentrates: Especially suitable for the preparation of organic pigment resin-free universal concentrates during the production of waterborne industrial coatings (such as automotive coatings, construction machinery coatings, metal protective coatings), efficiently dispersing high-performance organic pigments such as PR254, PY83, and PR170, ensuring concentrate compatibility and tinting stability in base paints.
- High-end ink-specific concentrates: Used in waterborne flexographic and gravure ink systems to efficiently disperse organic pigments and prepare high-concentration, high-vividness core concentrates, ensuring ink printability and color performance.
- Cosmetic pigment dispersion: Suitable for cosmetic formulations requiring organic pigment coloring, ensuring uniform and stable pigment dispersion.
- Leather coating coloring: Used for organic pigment dispersion in leather finishing agents, ensuring uniform coating color.
Usage and Recommended Dosage
Addition sequence: For optimum performance, the Toynol® HD-2602 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 (recommended dosage 0.2-0.5%) and a defoamer (recommended dosage 0.3%) for better overall grinding results.
Recommended dosage (as-supplied dispersant as a percentage of the total formulation):
- PR254 pigment (pigment content 45-50%): 10% – 20%
- PY83 pigment (pigment content 45-50%): 15% – 25%
- PR170 pigment (pigment content 45-50%): 15% – 20%
- 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 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 HD-2602 particularly emphasize suitability for resin-free concentrate preparation of organic pigments?
A: Organic pigments are generally more difficult to disperse than inorganic pigments and require higher dispersant adsorption performance. The molecular structure of HD-2602 is specially designed to adsorb strongly onto organic pigment surfaces and provide a strong steric hindrance effect, effectively preventing pigment particle re-agglomeration even without resin, thereby ensuring concentrate storage stability and application performance.
Q: For different organic pigments (such as PR254, PY83, PR170), why do the recommended dosages of HD-2602 differ?
A: This is mainly due to differences in surface properties, specific surface area, and chemical structure among organic pigments. Each pigment has its own optimum dispersant adsorption amount; insufficient dosage leads to incomplete dispersion, while excessive dosage may affect film performance. Dosage screening within the recommended range is recommended, determining the optimum economical dosage by testing grinding fineness, viscosity, and storage stability.
Q: The operating advice emphasizes that the additive must be added to water before the powder and fully dissolved. Why is this sequence critical?
A: This sequence ensures that dispersant molecules are fully and uniformly distributed in the water phase and can rapidly and evenly adsorb onto pigment surfaces the moment the organic pigment powder is added, achieving optimum wetting and dispersion. If the sequence is reversed, pigment particles may have already agglomerated irreversibly, and the dispersant added afterward can hardly open these agglomerates, impairing final dispersion efficiency.
Q: When preparing high-concentration organic pigment concentrates with HD-2602, what key points need special attention?
A: When preparing high-concentration organic pigment concentrates, in addition to strictly following the correct addition sequence, the following should be noted: 1) ensure the grinding equipment has sufficient shear force; 2) it is recommended to combine with a suitable wetting agent to promote initial wetting; 3) add a defoamer to eliminate bubbles from high-speed dispersion; 4) conduct small-scale testing to determine the optimum dispersant-to-pigment ratio.
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