China Polyether Defoamer Supplier
Polyether defoamer is a kind of defoamer with polyether as the main ingredient, which belongs to non-ionic surfactant.
China polyether antifoam production started in 1969. Yuanwang, a professional defoamer powder supplier, also has a long history of 20 years.
Each type of Yuanwang antifoaming agent is developed according to the specific needs of users. Our products have excellent defoaming and foam inhibition functions.
Polyether Defoamer Types
Yuanwang polyether defoamer is in powder form. It is especially suitable for dry powder systems, and can be directly mixed into mortar or coatings. It kills foam faster than mineral oil defoamer. It works in more scenarios than fatty alcohol type, especially in building material powders.
The formulation is mild and non-toxic. It stays compatible with cement and other powder systems. It will not cause secondary bubbles or color issues. Storage is stable. The powder keeps its quality for a long time with no settling. Below are the two models most favored by our customers.
Polyether Solid Defoamer | Powder Defoamer
For Dry-Mix Mortar, Self-leveling, Powder Coatings | Silicone-Free & High Efficiency
Our YW802S & YW803S are high-performance solid defoamers. Silicone-free formula ensures no cratering, no impact on bonding strength, perfect for dry mortar systems.
| Feature | YW803S Modified Polyether (Silicone-Free) | YW802S Inorganic Silicon Polyether |
|---|---|---|
| Physical Form | White to off-white powder | White / Slightly yellow powder |
| Type | Silicone-Free Modified Polyether | Silicone-Polyether Composite |
| PH Value | 6.0 – 9.0 | 6.0 – 9.0 |
| Defoaming Rate | > 60% | > 70% (Faster action) |
| Foam Inhibition Rate | > 70% | > 75% |
| Bulk Density | — | ≤ 0.6 g/cm³ |
| Volatile Matter | — | ≤ 5.0% |
| Dosage | 0.3 – 0.5‰ | 0.5 – 0.6‰ |
| Best For | Dry-mix Mortar, Powder Coatings, Gypsum-based materials | Self-leveling, Grouting, Concrete, Special mortar |
| Top Match | BASF 9010F, Münzing 803/841 | Evonik Degussa 362 |
| TDS Download | Download TDS (PDF) | Download TDS (PDF) |
✅ YW803S: 25kg/drum → 15 Tons
✅ YW802S: 15kg/bag, 480kg/pallet → 9.6 Tons
✅ Storage: Store in 10°C – 30°C, avoid direct sunlight and rain
Yuanwang Polyether Antifoam Properties and Advantages
1. Fast defoaming speed & high efficiency
2. Long-lasting foam inhibition
3. Easily disperses in water and blends well with liquid formulations
4. Non-toxic & non-corrosive, no residue & biological inertia. It is safe to use.
6. Low dosage


Polyether Defoamer Manufacturer
As a polyether defoamer strength manufacturer in China, Yuanwang has the following advantages:
– Experience: With over 20 years of development, our R&D staff can provide various solutions for you.
– Scale:
1. Covering an area of nearly 100 acres;
2.With a team size of more than one hundred people;
3.Supported by the government’s direct capital injection. Yuanwang is your stable partner.
– R & D strength: The company has an R&D department, technical support department, and experimental center. You can choose our polyether antifoam with ease.
Polyether Solid Defoamers
Yuanwang polyether solid defoamers have two main effects – diffusion & adsorption.
It achieves defoaming by rapidly diffusing and forming an adsorption layer. This lowers the surface tension and makes it easier for gas molecules to escape from the interior, thus destroying the foam structure.


China Powder Defoaming
Customized production: OEM, matching suitable formulations for customers to achieve customer satisfaction
Technical parameters:
– Form: powder
– Emulsion ionic: non-ionic
– Content: 100%
– Dosage: The exact dosage may differ based on the application scenario.
The Reason for Choosing Yuanwang Polyether Defoamer
- The technical team responds 24 hours
- 20 engineers will provide you with antifoaming agent technology programs
- Integration of research, production, and marketing, customized formulations for your needs
- Provide you with professional guidance and training to solve related technical problems.

Variety of Types
Polyether Defoamer Use
Porosity in concrete is mainly due to the introduction of air to form bubbles when mixing concrete. Adding polyether defoamer to concrete can mainly play the following roles:
(1) End and inhibit the generation of air bubbles, reduce the air holes on the surface of concrete;
(2) Effectively improve the quality of concrete;
(3) Increase the strength of concrete.
In order to avoid foam resulting in uneven color and porosity, the use of polyether defoamer in coatings will ensure product quality. Yuanwang’s polyether defoamer will not affect the viscosity of the slurry and the appearance of the color.
The Yuanwang antifoam team suggests adding polyether defoamer in two stages. First, during the grinding of raw materials. Second, when mixing the paint.
Wastewater treatment creates a lot of foam. This is due to surfactants, chemicals, and decomposing microorganisms. The foam reduces treatment efficiency and can overflow equipment, causing pollution.
Yuanwang product can be used in wastewater treatment. It eliminates foam and improves efficiency.
Laundry detergent is a common daily chemical product. It contains anionic surfactants and some non-ionic surfactants. They remove deep dirt well but foam up reduces washing efficiency.
Yuanwang product works well with the foaming system. It reduces the foam film’s elasticity, speeds up foam bursting, and restores the washing system’s normal operation.
Related Products
FAQs
When using polyether defoamer, you need to pay attention to the following points.
Firstly, choose a defoamer model that suits the sewage treatment process. This will ensure its defoaming effect and stability.
Secondly, the amount of defoamer should be controlled to avoid overuse leading to secondary pollution.
Finally, we should follow the instructions on the use of the correct operation to ensure that the defoamer can give full play to its role.
The Yuanwang antifoam team suggests adding polyether defoamer in two stages. First, during the grinding of raw materials. Second, when mixing the paint.
- When grinding, adding polyether defoamer can quickly eliminate foam. It can also prevent foam from forming later in the mixing.
- When mixing, add a polyether defoamer. It will eliminate the foam and prevent air holes, pinholes, and bulging in the coating film.
- Is the defoamer compatible with other additives?
- When to add a defoamer?
About compatibility: Polyether defoamer contains emulsifiers and other surface-active substances. Ensure they are compatible with low and high-viscosity coating systems. Otherwise, they will affect the coating’s color, texture, and adhesion.
About adding time:
It is not possible to add polyether antifoam directly to the coating that has been processed and diluted, it will affect the viscosity of the product. It is better to add it when the viscosity of the paint is high. One time is for the grinding raw materials stage, the second time is to adjust the paint into the paint stage.
Adding it at the time of grinding can quickly eliminate the foam. It will also prevent foam from reappearing in later mixing and processing.
Adding it when mixing the paint eliminates the foam. This prevents air holes, pinholes, and bulges on the film after use.
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