Toynol® DS-191L/191H Dispersing Agent
1 🎯 Abstract
Toynol® DS-191L/191H are high-performance water-based dispersing agents, composed of a mixture of amine alkyl hydroxy affixture of HMW styrene acrylic copolymers and surfactant. They have good wetting effect on pigments and fillers, outstanding deflocculation, and provide powerful charge repulsion. APEO-free, they can reduce the viscosity of grinding systems, improve the color development of millbases, and are specially suitable for organic pigment dispersion, compatible with various powders.
2 📊 Core Product Information
Item | DS-191L | DS-191H |
Appearance | Yellow transparent liquid | Yellow transparent liquid |
Content（%） | 40% | 40% |
Solvent | Water | Water |
Core Advantages
High-performance water-based dispersing agents
Good wetting effect on pigments and fillers
Outstanding deflocculation and powerful charge repulsion
Reduces grinding system viscosity, improves millbase color development
Specially suitable for organic pigment dispersion
Compatible with various powders
APEO-free
3 🛠️ Application Guide
3.1 Recommended Application Fields
Applicable Pigments: Phthalocyanine organic pigment (blue/green), azo organic pigment (red/yellow)
Applicable Products: Water-based inks, architectural coatings, wood and furniture coatings, automotive coatings, can coatings, anticorrosive paints, leather coatings
3.2 Usage Methods and Recommended Dosage
3.2.1 Recommended Dosage
Organic pigments: 10-50% (based on pigment, calculated by dispersant solid content SOP)
3.2.2 Operation Guidance
First add dispersant into water, then add powder, stir at 4000rmp/min for 10min. After the powder is completely wetted, add grinding glass beads to start timing grinding.
Do not add wetting agents separately; Toynol® wetting agents can accelerate original powder wetting.
Adding Toynol® defoamers can quickly eliminate grinding foam.
To obtain optimal performance, Toynol® additives must be added to water before resin and pigment.
It is advisable to conduct gradient tests to determine the optimal dosage.
3.2.3 Grinding Operation
Equipment: Dispersing sand mill
Grinding Media: Glass bead (0.8-1.2mm), filling rate 70%
Parameters: 3000rmp/min for 60min
3.2.4 Performance Evaluation
Centrifugal stability: Take 20ml millbase into centrifuge tube, centrifuge for 10min under 3000r/min, observe the layering of millbase, pour out liquid and calculate the amount and percentage of precipitate.
Viscosity evaluation: Use Brookfield rotational viscometer
Fineness measure: Scraper fineness meter
Viscosity stability: Store millbase in 100ml wide-mouth bottle at 40℃ for 24 hours, measure viscosity change; ±50% change is regarded as qualified.
3.2.5 Application Reference Examples
Note: ●：Excellent ◎：Good
ExampleⅠ (Experimental pigment: phthalocyanine blue 15:2, powder content 30%)
Component | Dosage |
Pigment content | 30 |
Dispersant dosage (as supplied) | 30 |
Defoamer (Toynol®) | 0.1-0.3 |
Wetting agent (Toynol®) | 0-0.3 (as appropriate) |
Water | Add to 100% |
Item | Toynol® DS-191L/H | Toynol® DS-193L/H | Imported dispersant |
Dispersant dosage (SOP) | 40% | 40% | 40% |
Wetting of original powder | Quick | Quick | Quick |
Stock solution stability (centrifugation) | ● | ● | ● |
Dilution stability (centrifugation) | ● | ● | ● |
Millbase viscosity | ● | ● | ◎ |
Dispersion fineness (μm) | ≤2.5 | ≤2.5 | ≤2.5 |
Change of storage viscosity | Without thickening and thixotropy | Without thickening and thixotropy | Without thickening and thixotropy |
ExampleⅡ (Experimental pigment: permanent yellow P.Y.12, powder content 35%)
Component | Dosage |
Organic pigment content | 35 |
Dispersant dosage (as supplied) | 26 |
Defoamer (Toynol®) | 0.1-0.3 |
Wetting agent (Toynol®) | 0-0.3 (as appropriate) |
Water | Add to 100% |
Item | Toynol® DS-191L/H | Toynol® DS-193L/H | Imported dispersant |
Dispersant dosage (SOP) | 30% | 30% | 30% |
Original powder wetting | Quick | Quick | Quick |
Stock solution stability (centrifugation) | ● | ● | ◎ |
Dilution stability (centrifugation) | ● | ● | ◎ |
Millbase viscosity | ● | ● | ◎ |
Dispersion fineness (μm) | ≤2.5 | ≤2.5 | ≤2.5 |
Change of storage viscosity | Without thickening and thixotropy | Without thickening and thixotropy | Without thickening and thixotropy |
4 ⚠️ Safety and Storage
Packaging: 25L plastic drum, 220L iron drum
Storage: As liquid material, this product should be sealed and placed in a dry, cool, well-ventilated place at room temperature away from fire source.
Safety Precautions: For detailed safety information, refer to MSDS.
5 ❓ Frequently Asked Questions (FAQ)
Q1: What are the core advantages of Toynol® DS-191L/191H?
A1: They have good pigment wetting effect, outstanding deflocculation, powerful charge repulsion, are APEO-free, reduce grinding viscosity, improve color development, and are specially suitable for organic pigment dispersion.
Q2: What is the correct addition order of the product?
A2: First add dispersant into water, then add powder, stir at 4000rmp/min for 10min; after the powder is completely wetted, add grinding glass beads for grinding.
Q3: Can this product be used with other additives?
A3: Yes. It can be used with Toynol® wetting agents (accelerate original powder wetting) and Toynol® defoamers (eliminate grinding foam).
Q4: How to determine the optimal dosage of the product?
A4: The recommended dosage for organic pigments is 10-50% (based on pigment, calculated by dispersant solid content SOP); it is advisable to conduct gradient tests to confirm the optimal dosage according to actual scenarios.
6 📞 Contact Us and Information Acquisition
For more detailed product technical parameters, test reports, customized application schemes or cooperation consultations, please refer to MSDS or contact us.
Tianjin Hi-Perferal Advanced Materials Co.,Ltd.
Contact: Cary Lee
Email: cary.lee@surfychem.com
Mobile: +86 18526487936
