Manta MS305D Silane Terminated Polyether

Manta MS305D is a Silane-Terminated Polyether (STP) polymer featuring a polyoxypropylene backbone. Designed for moisture-curing systems, it undergoes hydrolysis and cross-linking upon exposure to ambient humidity to form a durable, elastic network. It serves as a premium base resin for formulating high-quality elastic sealants, structural adhesives, and protective coatings.

Compared to traditional silicone and polyurethane (PU) technologies, MS305D offers a superior balance of performance and environmental safety. It is 100% solvent-free, low-VOC, and contains no free isocyanates, eliminating the health and safety risks associated with PU.

Properties

• Medium activity, High modulus
• Excellent anti-aging and anti-yellowing properties.
• Excellent bonding strength and tensile elasticity.
• Excellent water resistance and chemical solvent resistance.
• Excellent storage stability.
• Solvent-free, odor-free, environmentally friendly.
• Can be mixed with other polymers.

Manta MS305D is a high-hardness resin designed as a core binder for moisture-curing systems. It can be formulated into both 1-component (1K) and 2-component (2K) systems, offering exceptional bonding strength across diverse substrates.

1. Industrial Adhesives & Sealants Ideal for high-strength structural bonding and heavy-duty industrial joint sealing where high mechanical resistance is required.
2. Coatings & Potting Compounds Used as a base for durable protective coatings and electronic potting, providing excellent encapsulation and weather resistance.
3. Transportation & Automotive Perfect for structural assembly in EV batteries, rail transit, and specialty vehicles, offering high hardness and vibration damping.
4. Construction & Infrastructure High-performance sealing for expansion joints, window perimeters, and facade cladding, ensuring a paintable and non-staining finish.
5. New Energy Reliable sealing and structural fixing for solar panels and wind energy components.

Processing  

1. Moisture Control: Due to the moisture-sensitive nature of alkoxy groups, maintaining a strictly dehydrated environment during storage and production is critical to prevent premature cross-linking.
2. Formulation Flexibility: MS305D offers excellent compatibility with various fillers. Dosage can be adjusted to meet specific requirements when mixing with PCC (Nano-precipitated Calcium Carbonate), GCC (Ground Calcium Carbonate), Fumed Silica, silica flour, diatomaceous earth, or aluminum hydroxide.
3. Dehydration Process: To prevent premature gelation, all fillers must be thoroughly dehydrated. Silane VTMO is highly recommended as an effective moisture scavenger.
4. Plasticizer Selection: Compatible plasticizers include Phthalates (such as DOP, DINP, DIDP), as well as PPG and other low-molecular-weight polyethers.
5. Performance Additives: For enhanced properties, MS305D can be formulated with adhesion promoters (tackifiers), antioxidants, fungicides (mildew inhibitors), and UV/Light stabilizers.