Trimethoxysilane-Terminated Polyether | Manta MS330A

Manta MS330A is a trimethoxysilane-terminated polyether (CAS 216597-12-5, viscosity 22000-32000 mPa·s at 25°C, high activity, medium-high modulus) used as a binder for moisture-curing elastic sealants and adhesives in automotive, rail, construction and transparent encapsulation. A reference sample cured to 0.77 MPa tensile strength with 109% elongation, and shelf life is 24 months.

Manta MS330A is a silane-terminated polyether (STPE) polymer featuring trimethoxysilylpropylcarbamate functional groups on a linear Polypropylene Oxide (PPO) backbone.

Specifically engineered for premium moisture-curing elastic systems, MS330A undergoes a controlled hydrolysis process to form a robust, high-density siloxane network. This solvent-free and isocyanate-free binder ensures an odorless curing process with zero bubble formation, making it an ideal “green” alternative for high-end construction and industrial applications. It combines exceptional adhesive strength with superior elastic recovery, maintaining structural integrity across diverse substrates.

Properties

• Optimal Balance of Activity & Modulus: High reactivity ensures fast tack-free times while delivering medium-to-high modulus for structural support.
• Superior Elasticity & Recovery: Exhibits excellent mechanical strength combined with very high elastic recovery, ideal for joint movements.
• Environmentally Friendly: 100% solids, zero VOC, and isocyanate-free; no bubbles or odors are generated during the cross-linking process.
• Excellent Optical Properties: High transparency and outstanding resistance to yellowing, suitable for clear sealants and coatings.
• Ease of Compounding: Low base viscosity allows for efficient mixing with standard fillers and auxiliaries, ensuring a smooth production process.
• Primerless Adhesion: Provides strong, durable bonds to a vast range of substrates, including porous and non-porous surfaces, without the need for pre-treatment.

Specifically engineered for premium moisture-curing elastic systems, MS330A undergoes a controlled hydrolysis process to form a robust, high-density siloxane network. This solvent-free and isocyanate-free binder ensures an odorless curing process with zero bubble formation, making it an ideal “green” alternative for high-end construction and industrial applications. It combines exceptional adhesive strength with superior elastic recovery, maintaining structural integrity across diverse substrates.

1. Automotive & Transportation: High-performance elastic sealants for vehicle bodies, rail transport, and container construction where vibration resistance is essential.
2. Construction & Architecture: Medium-to-low modulus joint sealants for high-rise buildings and infrastructure, offering excellent weatherability.
3. Transparent Encapsulation: Precision potting compounds and crystal-clear adhesives for electronic components and decorative glass bonding.
4. Eco-Friendly Interior Design: Sustainable DIY and professional adhesives for interior decoration, ensuring healthy indoor air quality (Low VOC).
5. Industrial Sealing Coatings: Protective coatings requiring high flexibility, durability, and superior adhesion to metallic and plastic surfaces.

Processing

Manta MS330A is highly soluble in common organic solvents but virtually insoluble in water. Upon exposure to moisture, it undergoes slow hydrolysis—releasing methanol—to form a chemically inert siloxane network. While uncatalyzed MS330A exhibits temporary stability in air, it must be stored and processed under moisture-controlled conditions to prevent slow polycondensation.

Standard mixing and compounding equipment are suitable for formulating Manta MS330A. To ensure long-term shelf life, the addition of water scavengers is essential. Vinyltrimethoxysilane (VTMO) or Trimethoxysilylmethyl-methylcarbamate(Alpha-silane) are highly recommended to prevent premature gelation during production and storage.

Typical Performance of a Reference Sample

Guide formulation: