Manta WS450 Silicone Resin Emulsion
Silicone Water Repellents

Manta WS450 Silicone Resin Emulsion

Product Code: Manta WS450

Chemical Name Aqueous emulsion of modified polysiloxane resin
Product Form Liquid
Synonyms Silicone Resin Emulsion for Architectural Coatings
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Technical Specifications

PARAMETER VALUE / RANGE
Appearance: Milky white liquid
Active Content(%) approx. 50
Specific Gravity(20℃, g/cm³) approx. 1

Product Description

Manta WS450 is a solvent-free aqueous emulsion of a modified polysiloxane resin. It is specifically engineered to function as the primary binder or co-binder in the formulation of premium exterior architectural coatings and silicone resin plasters.

Equivalent to Wacker SILRES® BS 45.

Properties

  • Exceptional Water Repellency: Provides durable, highly effective moisture protection.
  • Highly Breathable: Maintains extremely high water vapor permeability, allowing building facades to “breathe”.
  • Aesthetic Preservation: Exhibits excellently low dirt pick-up, ensuring long-lasting facade cleanliness.
  • Early Rain Resistance: Rapidly develops water resistance shortly after coating application.
  • Robust Film-Forming: Forms a resilient, microporous silicone resin network.
  • High Alkali Resistance: Perfectly stable in high-pH environments, highly compatible with silicate-based formulations.
  • Eco-Friendly: 100% solvent-free, water-borne system.

Applications

Manta WS450 acts as a core hydrophobic binder in silicone resin paints and elastomeric plasters. It delivers the optimal balance of driving-rain protection and vapor transmission. Furthermore, owing to its outstanding alkali resistance, it is highly recommended as a modifying co-binder for sodium silicate paints (mineral paints) to significantly upgrade their water repellency.

 

Formulation Guidelines

During the manufacturing process, Manta WS450 is typically incorporated into the water-based coating formulation at the following dosages (calculated by weight relative to the total formulation):

Silicone Resin Paints: 4.0% – 10.0%

Silicone-Modified Acrylic Paints: 2.0% – 4.0%

Silicone Resin Plasters / Renders: 2.0% – 6.0%

SiSi Plasters (Silicate/Silicone Hybrid Renders): 2.0% – 4.0%

Formulator’s Tip: While Manta WS450 provides an exceptional microporous water-repellent network, to achieve an ultimate surface water-beading (lotus) effect, we strongly recommend formulating it in combination with 1.0% – 3.0% of Manta WS136 (Water-Repellent Additive).

Application Areas

Concrete, Masonry & Stone Protection Liquid Waterproofing & Construction

Packaging & Handling

Packaging

In 190kg drum and 950kg IBC

 

Safety and Storage

Temperature Sensitivity: Manta WS450 is an aqueous emulsion highly sensitive to frost and extreme heat. Store indoors at temperatures strictly between 5°C and 40°C.

Storage Risks: Exposure to temperatures outside this range may cause irreversible emulsion breakage (phase separation).

Quality Verification: In the event of suspected frost or heat damage, the viability and homogeneity of the product must be thoroughly verified prior to any formulation or application.

Shelf Life: 12 months when stored properly in original, unopened containers. It is classified as a non-hazardous substance.

Support

Frequently Asked Questions

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From 1-gram laboratory trials to 1,000+ kg production runs. Full CoA, SDS, REACH/TSCA documentation included. Laboratory samples available within days.

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