Fluorine-Free (PFAS-Free) Water Repellent | Manta WS370

Manta WS370 is a water-based, silicone-modified, fluorine-free water-repellent emulsion (pH 4-7, weakly cationic, nanometer particle size) used for durable water-repellent finishing of textiles and leather and for protecting concrete, stone and masonry. Comparable to Momentive CoatOSil 2059, it is PFAS-free and applied at 30-80 g/L in textile padding baths.

Manta WS370 is a water-based, silicone-modified, fluorine-free water-repellent emulsion with a nanometer particle size. It can be easily diluted with water and applied directly at room temperature. It is engineered to deliver exceptional performance for both high-end textile finishing and the durable protection of porous architectural substrates.

Similar to Momentive CoatOSil 2059.

Features & Benefits

• Textile Enhancement: Provides woven and knitted fabrics with excellent water droplet roll-off properties, while imparting a soft, drapable, and elastic hand feel. Significantly improves the wash-and-wear properties, crease recovery angle, sewability, and tear strength of treated fabrics.
• Architectural Protection: Thanks to its nanometer particle size and weakly cationic nature, it penetrates deeply and bonds firmly to porous mineral building materials. It forms a breathable, long-lasting hydrophobic barrier without altering the substrate’s original appearance.
• Eco-Friendly: 100% fluorine-free (PFAS-free) formulation, meeting stringent environmental standards.

1. Textiles and Leather: Durable water-repellent (DWR) finishing for outdoor apparel, technical fabrics, and leather treatments.
2. Architectural & Hard Surfaces: Deep-penetrating water repellent and stain protection for concrete, natural stone, brickwork, stucco, and masonry.

Application Guidelines

1. Textile Padding Process:

Dilute Manta WS370 with deionized water to a working concentration of 30–80 g/L, depending on the specific fabric. Dry and cure the treated fabric at 150°C – 180°C for 0.5 to 3 minutes. If 6–10 g/L of a cross-linking agent is added to the finishing bath, it can further enhance both the water-repellent performance and wash durability.

2. Architectural Surface Treatment:

Dilute the emulsion with clean water to the desired working concentration (typically 1:10 to 1:20 ratio, depending on substrate porosity). Apply evenly onto clean, visibly dry surfaces using a low-pressure sprayer, brush, or roller. Allow the treated surface to dry and cure naturally at room temperature for 24 to 48 hours to achieve maximum water repellency.