Looking for a waterproofing or anti corrosion coating? SIOResin® P-4213 must be a good choice. P-4213 Polysiloxane Anti-Corrosion and Waterproof Coating is a high-performance, solvent-free epoxy-modified polysiloxane coating. It is formulated primarily with SIO-5971 solvent-free epoxy silicone resin, blending the remarkable weather resistance, outstanding chemical durability, and superior salt spray resistance of polysiloxanes. Designed for extensive applications in waterproofing and heavy-duty corrosion protection, this coating exhibits exceptional adhesion, excellent toughness, enhanced wear resistance, and easy-to-clean properties.
User-friendly in application, it can be color-customized to meet specific requirements and, under optimal conditions, provides up to 20 years of protection.
Price 26.95 USD/KG
Polysiloxane Anti-Corrosion & Waterproof Coating Key Features
1 Exceptional Weather Resistance – The Si-O bond structure of polysiloxane ensures long-term stability under UV exposure, high humidity, acid rain, and other harsh conditions, effectively preventing aging, chalking, or discoloration.
2 Superior Corrosion Protection – Demonstrates excellent resistance to chemical corrosion, acids, alkalis, and salt spray, making it ideal for coastal, high-humidity, and heavily polluted industrial environments.
3 Advanced Waterproofing and Seepage Resistance – The dense coating layer effectively blocks moisture infiltration, ensuring long-lasting protection for concrete and various substrates.
4 Outstanding Mechanical Properties – The cured film achieves 4H+ hardness, delivering exceptional abrasion resistance, impact resistance, and a high-gloss finish (over 90 gloss units under natural curing).
5 Eco-Friendly, Solvent-Free Formulation – Developed with SIO-5971 resin, this coating contains minimal VOCs, meeting environmental regulations and ensuring safer application conditions.
6 Broad Compatibility – Adheres effectively to cement, mild steel, stainless steel, aluminum alloys, glass, floor coatings, wood, bricks, tiles, and stone, catering to a wide range of protective applications.
Engineered to perform in diverse and challenging environments, P-4213 is widely used in construction, transportation, and industrial protection, positioning itself as an ideal eco-friendly, high-performance coating solution.
Technical Parameters
| Parameter | Value |
| Surface Dry Time | ≤ 2 hours |
| Usable Time | ≤ 4 hours |
| Single Coat Thickness | 50–100 μm |
| Mixing Ratio (A:B) | 2.5:1 |
Waterproof & Anti-corrosion coatings applications
P-4213 Polysiloxane Anti-Corrosion and Waterproof Coating is extensively applied in:
- Construction & Infrastructure – Waterproofing and protection for concrete structures, rooftops, exterior walls, tunnels, culverts, and reservoirs, with the added benefit of easy maintenance.
- Heavy-Duty Corrosion Protection – Long-term anti-corrosion for steel structures, pipelines, ships, storage tanks, specialty steels, and alloy materials.
- Transportation & Engineering Projects – Applied to elevated highways, sea-crossing bridges, rail transit systems, and wind turbine blades.
- Industrial & Municipal Engineering – Used in industrial flooring, roofing waterproofing, bridges, and landscaping structures.
- High-End Coatings – Precision coatings for automobiles, wheels, marine vessels, aircraft, home appliances, and decorative panels.
- Plastics & Rubber Protection – Enhances abrasion resistance, aging resistance, and waterproofing, also serving as a high-performance waterproof sealant.
Application Guidelines
Curing & Drying Times
- 20°C: Surface dry in 2–3h, touch/move dry in 4–5h, fully cured in 12–15h.
- 5°C: Surface dry in 7–9h, touch/move dry in 9–11h, fully cured in 23–30h.
- Optimal performance achieved after 7 days of full curing.
Application Methods
- Recommended Techniques: Airless spraying, conventional spraying, and brushing.
- Thinner Usage: Not recommended. If necessary, 5–10% benzene/ester-based mixed solvent can be added.
Spraying Parameters (For Reference, Adjustable as Needed)
| Application Method | Nozzle Diameter (mm) | Spray Pressure (MPa) |
| Airless Spraying | 0.3–0.5 | 20 |
| Conventional Spraying | 1.5–2.0 | 0.3–0.4 |
SIO-5971 Solvent-Free Epoxy Polysiloxane Resin
SIO-5971 is a transparent, solvent-free resin that combines the strengths of epoxy and polysiloxaneIt offers high environmental compatibility and superior adhesion. Additionally, it provides excellent insulation properties. Furthermore, it resists yellowing, acids, and alkalis effectively. It also withstands salt spray and extreme temperatures. Coatings formulated with SIO-5971, such as P-4213, provide unmatched corrosion and waterproof protection, alongside high mechanical strength, impact resistance, and an outstanding gloss finish. Check the TDS.
Key Characteristics of SIO-5971
- Eco-Friendly: Solvent-free with low VOC, meeting stringent environmental standards.
- Unmatched Durability: Resistant to high/low temperatures, UV degradation, oxidation, and yellowing.
- Robust Mechanical Properties: Exceptional adhesion, impact resistance, and wear resistance, achieving 4H+ hardness.
- Anti-Corrosion & Stain Resistance: Withstands acids, alkalis, salt spray, solvents, and detergents, maintaining a high gloss (90+ gloss units under natural curing).
- Versatile Compatibility: Adheres well to cement, steel, stainless steel, aluminum alloys, glass, wood, bricks, and stone.
P-4213 Formulation Reference (Based on SIO-5971)
| Component | Proportion | Supplier |
| SIO-5971 Solvent-Free Epoxy Polysiloxane Resin | 37–38 | SIOResin |
| Titanium Dioxide (Rutile Type) | 9–11 | DuPont 960 |
| Fillers | 20–21 | – |
| Thixotropic Agent | 0.5–0.9 | – |
| Rheology Modifier | 1–1.4 | – |
| UV Absorber | 1.2–1.5 | BASF |
| Defoamer | 0.3–0.6 | – |
| SIO-5971 B Component | 37–38 | SIOResin |
Precautions
- Ideal application temperature range: 5°C–40°C. Avoid high humidity or rainy conditions.
- Storage conditions: Keep in a cool, dry, and well-ventilated area, away from high temperatures, open flames, and oxidizers.
- Sealing requirement: After use, seal the B-component curing agent tightly to maintain performance.
- Testing before large-scale use: Conduct a small-scale application test to determine the optimal quantity and prevent material waste.
How to order anti-Corrosion & Waterproof Coating?
With the advanced SIO-5971 resin, P-4213 offers superior weather resistance, long-lasting corrosion protection, excellent waterproofing, and outstanding mechanical performance. So it is the ultimate solution for industrial and architectural protection. For coating manufacturers requiring raw materials, SIO-5971 is available for formulation development and production. To get a quote, simply contact sales@sioresin.com.
About SIOResin (SIO New Material)
SIOResin is a leading company in China specializing in the development and production of new materials. We manufacture and supply high-quality water-based silicone resins, silicone-modified polyesters, water-based polyurethanes, water-based acrylics, UV resins, liquid silicone rubber, intumescent fireproof coatings, flame retardants, wetting agents, curing agents, associative thickeners, driers, soft-touch agents, and other additives. Our products have a wide range of applications and with competitive prices.
To learn more or to request samples, feel free to contact us. We are always here to help with your adhesive needs!