|| | 1-3%Titanium dioxide || | 0.5—1.5%Filler || 2—5.0%| Inorganic pigment|------------------------|------------------------||| Recommended Dosage| Material || | SubacidityAcid-Base || <5| Chroma (Gardner)|| | 98±2%Active ingredient || 1.08 g/cm³| Specific gravity| Light yellow viscous liquid || Appearance|------------------------|------------------------| || Specification| Property

RD-9781 Dispersant: Optimizing Dispersion in Oil/Alcohol Water-Based Systems

## Abstract

RD-9781 is a high-performance polymer dispersant specifically designed for oil/alcohol water-based systems. It excels in the grinding and dispersion of inorganic pigments such as iron oxide, titanium dioxide, and various fillers. This article provides a detailed overview of RD-9781, highlighting its features, advantages, recommended dosage, application areas, and storage conditions. By leveraging RD-9781, formulators can achieve superior pigment dispersion, viscosity reduction, and anti-flocculation effects, enhancing the performance of their coatings and ink systems.

## Keywords

RD-9781; dispersant; oil/alcohol water-based systems; inorganic pigments; titanium dioxide; viscosity reduction; anti-flocculation

## 1. Introduction

In the formulation of coatings and inks, achieving optimal dispersion of inorganic pigments and fillers is critical for ensuring high-quality end products. Proper dispersion enhances color strength, stability, and application properties. RD-9781, a polymer dispersant, has been developed to address these challenges, offering exceptional wetting, dispersion, and anti-flocculation effects in oil/alcohol water-based systems.

## 2. Features and Advantages of RD-9781

RD-9781 is a light yellow viscous liquid with the following key features and advantages:

- **Excellent Wetting and Dispersion**: RD-9781 provides superior wetting and dispersion of inorganic pigments such as iron oxide, titanium dioxide, and various fillers, ensuring uniform distribution and preventing pigment agglomeration.

- **Effective Viscosity Reduction**: This dispersant significantly reduces the viscosity of the system, allowing for higher pigment loading and improved flow properties.

- **Anti-Flocculation Effect**: RD-9781 prevents the flocculation of pigments, ensuring long-term stability and consistent performance.

- **Anti-Float Color Flower Effect**: Particularly effective with titanium dioxide, RD-9781 controls and prevents float color and blooming, enhancing the visual quality of the final product.

## 3. Product Specifications

| Property               | Specification          |

|------------------------|------------------------|

| Appearance             | Light yellow viscous liquid |

| Specific gravity       | 1.08 g/cm³            |

| Active ingredient      | 98±2%                 |

| Chroma (Gardner)       | <5                    |

| Acid-Base              | Subacidity            |

## 4. Recommended Dosage

The recommended dosage of RD-9781 varies depending on the type of pigment or filler:

| Material               | Recommended Dosage     |

|------------------------|------------------------|

| Inorganic pigment       | 2—5.0%                |

| Filler                  | 0.5—1.5%              |

| Titanium dioxide        | 1-3%                  |

## 5. Usage Instructions

To achieve optimal dispersion, dissolve RD-9781 in the mixture of grinding base material before adding the pigment for grinding or stirring. This ensures that the dispersant is evenly distributed and effectively adsorbed onto the pigment particles, maximizing its performance.

## 6. Application Areas

RD-9781 is widely used in the following applications:

1. **Inorganic Pigments**: Effective for grinding and dispersing titanium dioxide, talc, calcium carbonate, iron oxide, and other inorganic pigments.

2. **Coatings and Inks**: Suitable for oil/alcohol water-based coatings and ink systems, enhancing pigment dispersion and stability.

3. **High-Pigment-Load Formulations**: Ideal for formulations requiring high pigment loading, providing excellent viscosity reduction and flow properties.

## 7. Storage Conditions and Shelf Life

To maintain the quality and performance of RD-9781, adhere to the following storage conditions:

1. **Temperature Control**: Keep away from high temperatures and ignition sources.

2. **Ventilation**: Store in a ventilated and cool place.

3. **Sealing**: Ensure the container is sealed after use to prevent contamination.

4. **Shelf Life**: The product has a shelf life of 36 months when stored under recommended conditions.

## 8. Packing Specification

RD-9781 is available in the following packaging options:

- Net weight 25Kg/barrel

- Net weight 200Kg/barrel

## 9. Note

Due to the high active content of RD-9781, turbidity may appear when the temperature is below 15 degrees Celsius. This is a characteristic of the product and does not affect its performance.

## 10. Conclusion

RD-9781 is a high-performance polymer dispersant that offers exceptional wetting, dispersion, and anti-flocculation effects in oil/alcohol water-based systems. Its ability to reduce viscosity, prevent float color, and enhance pigment dispersion makes it an invaluable additive for formulators in the coatings and ink industries. By incorporating RD-9781 into their formulations, manufacturers can achieve superior product performance and meet the demands of high-pigment-load and high-stability applications.