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Ethylene Bis-Stearamide as an Effective Dispersing Agent in Paints and Coatings

by:Sainuo     2023-07-26


As the demand for high-performance paints and coatings continues to surge across various sectors, different types of ingredients are used to improve the overall quality and functionality of these products. Ethylene bis-stearamide, also known as EBS, is one of the highly effective dispersants that have found applications in the formulation of paints and coatings.

What is Ethylene Bis-Stearamide?

Ethylene bis-stearamide (EBS) is a white, powdery substance that belongs to the amide group of compounds. It is manufactured by reacting ethylene diamine with two molecules of stearic acid. This results in a complex compound with a unique molecular structure that makes it an excellent dispersing agent in various applications.

Applications of Ethylene Bis-Stearamide in Paints and Coatings

EBS has found several applications in the formulation of paints and coatings. It is widely used as a dispersing agent that helps to distribute pigments and fillers uniformly in the paint matrix. The following are some of the ways that EBS enhances the performance of paints and coatings:

1. Improved Scratch Resistance:

EBS is used as an additive in paints and coatings formulations to improve their scratch resistance. It forms a thin layer on the surface of the paint that helps to reduce the surface friction, making the coating more resistant to scratches.

2. Improved Durability:

Paints and coatings formulated with EBS have improved durability due to its unique molecular structure. The compound forms a semi-crystalline structure that reinforces the paint matrix, making it more resistant to degradation from environmental factors such as UV radiation, moisture, and heat.

3. Improved Gloss and Sheen:

EBS has a direct effect on the gloss and sheen of the paint. When added to the formulation, it helps to disperse the pigments and fillers uniformly, resulting in a smooth, even surface with an enhanced gloss and sheen.

4. Enhanced Adhesion

EBS improves the adhesion of paints and coatings to different substrates. It forms a chemical bond with the substrate, helping to improve the overall adhesion properties of the coating.

5. Reduced Viscosity

EBS is commonly used as a viscosity modifier in paints and coatings. It helps to reduce the viscosity of the paint, making it easier to apply and spread, leading to a more uniform coating.

Challenges in Formulating with Ethylene Bis-Stearamide

Despite the numerous advantages that EBS offers, formulating paints and coatings with EBS presents some challenges. The following are some of the challenges that formulators need to consider when working with EBS:

1. Compatibility Issues

EBS is not compatible with all the resins and polymers used in the formulation of paints and coatings. It is essential to select compatible raw materials to ensure that the EBS disperses uniformly in the paint matrix.

2. Dispersibility Issues

EBS has limited solubility in most solvents, making it challenging to incorporate it into the paint formulation. Achieving proper dispersibility requires the use of high-shear mixers or milling equipment.

3. Effect on the Drying Time

EBS has been found to affect the drying time of paints and coatings when added in high concentrations. It is crucial to carefully select the amount of EBS to be used to avoid interfering with the drying process.

4. Effect on the Odor and Color of Paints

When used in high concentrations, EBS can affect the odor and color of the paint. This may lead to an unpleasant smell or discoloration of the paint.


Ethylene bis-stearamide is a versatile and effective dispersing agent that has found several applications in the formulation of paints and coatings. Its unique molecular structure gives it several advantages such as improved scratch resistance, durability, and adhesion. However, formulating with EBS presents some challenges that must be considered. Therefore, it is essential to carefully select the raw materials and the concentration to achieve the desired results without compromising the quality of the final product.

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