Silicone Emulsions & Fluids
Silicone Water-Repellent Additive for Coatings | Manta WS136
Manta WS136 is a solvent-free aqueous emulsion of functional polyorganosiloxanes, used as a water-repellent additive in waterborne silicate paints, synthetic resin dispersions, masonry coatings and stucco. It significantly reduces capillary water uptake and gives a surface water-beading effect while retaining the water vapor permeability of the coating system.
- Grade
- WS136
- Chemical Name
- Aqueous emulsion of functional polysiloxane
- Form
- Milky white to white liquid
Overview
Manta WS136 is an aqueous emulsion of functional polyorganosiloxanes formulated as a water-repellent additive for waterborne architectural systems. It is compatible with silicate paints, synthetic resin dispersions, masonry coatings and stucco, and it can also be used in primers. Active ingredients: Approx 50% by weight. pH: Approx 9.
In exterior coatings, WS136 significantly reduces capillary water absorption and imparts a durable surface water-beading (roll-off) effect without compromising the water vapor permeability of the coating. The emulsion has good shear stability and can be incorporated at any stage of production, including the let-down phase or as a post-addition directly into the finished paint.
WS136 is an additive rather than a binder. Silicone resin emulsions such as Manta WS450 and Manta WS600 form the microporous binder network in silicone resin paints and plasters, and their TDSs recommend adding WS136 to achieve a pronounced surface water-beading effect.
Key Features
- Significantly reduces capillary water absorption in exterior coatings
- Durable surface water-beading (roll-off) effect
- Maintains the water vapor permeability of the coating
- Good shear stability; can be added at any production stage, including post-addition to finished paint
- Solvent-free, low-VOC aqueous formulation
Cross-Reference
Manta WS136 can be considered as an alternative to Wacker SILRES BS 1306.
Trademarks are the property of their respective owners; no affiliation is implied.
Specifications
| Property | Typical Value |
|---|---|
| Appearance | Milky white to white liquid |
| Active Ingredients | Approx 50% by weight |
| Density (20°C, g/cm³) | Approx 1 |
| pH | Approx 9 |
Typical values from the current Technical Data Sheet.
Applications
- Silicate paints: water-repellent additive for waterborne silicate systems
- Dispersion paints: synthetic resin dispersion coatings that need reduced capillary water uptake
- Masonry coatings and stucco: weather protection with a surface water-beading effect
- Primers: waterborne primers
Related applications: Paints & Coatings
Packaging & Storage
20-25kg/plastic pail, 180-200kg/internally lined steel drums (or high-density PE drums).
Safety and Storage
The product is sensitive to frost and heat and should be stored in a cool, ventilated, dry place indoors, away from the sun and rain, and should not be stored at temperatures below 0°C or above 40°C, as irreversible damage may occur. In the case of suspected frost or heat damage, the usability of the product must be checked before processing. Stir well before use to ensure the product is homogeneous.
Shelf life is 12 months in unopened original containers stored correctly. After this date the product may still be used if it meets the technical specifications.
Documents
- Technical Data Sheet · PDF Download TDS
- SDS and COA · on request Request Documents
Frequently Asked Questions
At what dosage and production stage is Manta WS136 added to a paint formulation?
The recommended dosage is 1.0% to 5.0% by weight, calculated on the total weight of the final coating formulation, and preliminary lab trials are recommended to determine the optimum. Because of its shear stability, WS136 can be incorporated at any stage, including the let-down phase or as a post-addition into finished paint.
Does WS136 reduce the breathability of exterior coatings?
No. WS136 significantly reduces capillary water absorption and imparts a durable surface water-beading effect while maintaining water vapor permeability within the coating matrix.
Is WS136 sensitive to frost during storage?
Yes. The product is sensitive to frost and heat and should be stored in a cool, ventilated, dry place indoors, away from the sun and rain, and should not be stored at temperatures below 0°C or above 40°C, as irreversible damage may occur. In the case of suspected frost or heat damage, the usability of the product must be checked before processing. Stir well before use to ensure the product is homogeneous.
Can I evaluate Manta WS136 before placing an order?
Yes. Samples are charged. The sample fee includes courier delivery and is deducted from your first formal order. Use Request a Sample and state the quantity and your coating type, since preliminary lab trials are recommended to determine the optimum dosage.
Related Products
WS136 is one step in the building protection formulation chain. One inquiry can cover the other raw materials in your formulation, with samples, technical documents, quotation and shipment handled together.
- Alkyl Silane Actives
- Emulsions & Pastes
- Siliconate Liquids & Powders
- Waterproof Coatings
Looking for a different purity, functional group, or a structure not listed here? Contact our technical team.
Talk to our technical team
Tell us your application, target properties and estimated quantity. We will suggest grades and arrange documents or samples.