Toynol® DS-195L Grinding Dispersant
Toynol® DS-195L High-Performance Waterborne Grinding Dispersant
Abstract
Toynol DS-195L is a high-performance nonionic dispersant developed to solve the flocculation, high viscosity, and uneven dispersion of hard-to-disperse powders (such as transparent iron oxide and titanium dioxide) in waterborne industrial systems such as coatings and inks. Its core functions are rapid powder wetting, strong charge and steric repulsion, effective reduction of grinding viscosity, and improved color development of concentrates. Compared with conventional approaches, it offers excellent flocculation control and cost-effectiveness, is APEO-free, and is environmentally friendly and safe, making it a suitable option for high-performance applications such as waterborne industrial coatings, automotive coatings, and waterborne printing inks.
Core Product Information
| Item | Specification |
|---|---|
| Model | DS-195L |
| Chemical Description | Modified maleic acid styrene-acrylic copolymer with acetylenic diol |
| Appearance (25 °C) | White to light yellow liquid |
| Color (Pt-Co) | ≤350 APHA (typical value: 200) |
| Solid Content | 38-42% (typical value: 40.1%) |
| Acid Value | 12-16 mg KOH/g (typical value: 13.7) |
Main Features and Advantages
- High-efficiency dispersion: Excellent wetting of pigments and fillers, rapid deflocculation and viscosity reduction, with dispersion fineness down to ≤2.5 μm.
- Broad compatibility: Suitable for a wide range of powders (such as transparent iron oxide, titanium dioxide, aluminum paste, etc.) and provides significant flocculation control.
- Good stability: Provides strong charge repulsion, ensuring the stability of color concentrates during storage and use.
- Environmentally friendly and economical: APEO-free and compliant with environmental regulations; moderate use concentration and high cost-effectiveness.
Recommended Application Fields
- Waterborne industrial coatings: Dispersion of pigments and fillers in automotive primers and topcoats, construction machinery coatings, and other systems.
- Waterborne printing inks: Suitable for pigment preparation in inkjet and flexographic printing inks, ensuring color uniformity and smoothness.
- Aluminum paste: Reduces the oil absorption value of the system and promotes uniform paste dispersion.
- Pigment concentrates: Specifically for preparing high-concentration, high-stability universal concentrates or concentrates of specific pigments (such as transparent iron oxide).
- Leather and textile coatings: Used for uniform powder dispersion in related finishing agents to improve product appearance.
- Powder surface modification: Used for surface treatment of inorganic powders to improve their compatibility and dispersibility in waterborne systems.
Usage and Recommended Dosage
Addition sequence: To ensure optimum performance, the dispersant must be added to water before the resin and pigment.
Operating method: Add the dispersant to water, stir until uniform, then add the powder; pre-wet for 10-30 minutes before grinding.
Recommended dosage (based on pigment weight, calculated on dispersant solids content):
- Transparent iron oxide pigments: recommended dosage 20% – 50%.
- Titanium dioxide: recommended dosage 3% – 7%.
- Other powders: recommended dosage 5% – 50%.
- The specific optimum dosage should be determined through dosage screening based on site conditions.
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 soap and water; if it enters the eyes, rinse immediately with plenty of water and seek medical attention.
- Storage conditions: Store sealed in a cool, dry, well-ventilated place, away from heat, sparks and open flames. Recommended storage at room temperature. This product is transported and stored as a Class C commodity.
- Special note: During low-temperature transport and storage, the product may solidify or crystallize; warming it to room temperature and stirring thoroughly restores it to its original state without affecting performance.
- 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: How compatible is DS-195L with resins in waterborne systems?
A: DS-195L is highly compatible with the vast majority of waterborne resins. However, to be safe—especially in complex formulations containing other additives—a small-scale compatibility test before use is recommended.
Q: For special pigments with high specific surface area (such as transparent iron oxide), how is the optimum dosage determined?
A: For hard-to-disperse pigments such as transparent iron oxide, it is recommended to begin dosage screening from the middle to upper end of the recommended range (20-50%). Our technical support team can provide free samples and experimental guidance to help you quickly determine the optimum approach.
Q: Can this product be used to prepare high-concentration titanium dioxide paste?
A: Yes. Test data show that in systems with titanium dioxide content up to 70%, DS-195L effectively reduces viscosity and achieves excellent dispersion fineness (≤2.5 μm) and storage stability, making it well suited for preparing high-concentration titanium dioxide paste.
Q: Where does the environmental friendliness of DS-195L specifically show?
A: DS-195L is free of APEO (alkylphenol ethoxylates) and formaldehyde and other harmful substances, complying with increasingly stringent environmental regulations (such as EU REACH), making it suitable for waterborne products with high environmental standards.
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