Low-Viscosity Silane-Terminated Polyether | Manta MF3

Manta MF3 is an alkoxy silane-terminated polyether polymer (viscosity 1000-2000 mPa·s at 25°C, density 1.02-1.05 g/cm³) used as a base polymer for moisture-curing elastic sealants, encapsulating adhesives and sealing coatings in construction, transportation and general industry. Its low viscosity and low activity allow higher filler loading in solvent-free, isocyanate-free formulations.

Manta MF3 Alkoxy silane–terminated polyether polymer designed for moisture-curing elastic sealants and sealing coatings.
Sealants formulated with MF3 exhibit excellent adhesion across a wide variety of substrates. Unlike polyurethane or silicone systems, these formulations are solvent- and isocyanate-free, producing no bubbles or odor during curing.
The product is well suited for applications in the construction, transportation, and general industrial sectors.

Properties

• Low Activity, low shrink.
• Lower viscosity, could adding more powder
• Good adhesion strength and tensile elasticity
• Excellent aging and yellowing resistance
• Excellent water resistance , resistance to chemical corrosion
• Solvent free , odourless , eco-friendly
• Could be blended with other Manta polymers

Sealants formulated with MF3 exhibit excellent adhesion across a wide variety of substrates. Unlike polyurethane or silicone systems, these formulations are solvent- and isocyanate-free, producing no bubbles or odor during curing.
The product is well suited for applications in the construction, transportation, and general industrial sectors.

MF3 polymer is used as base polymer in elastic sealants, elastic structure sealants, encapsulate adhesives and coatings . The curing mode of the polymer is moisture curing, It can be made into a single component or two components system.

• High hardness sewing sealant
• Transportation industry elastic sealant
• Low viscous encapsulate adhesive
• Personal DIY sealant
• Eco-friendly decoration sealant

Processing  

Manta MF3 polymer is readily soluble in common organic solvents such as ethanol, while remaining virtually insoluble in water. As a result, formulation components are typically oil-soluble materials.

The curing mechanism is based on moisture-initiated silane reactions: in the presence of a catalyst, terminal silane groups undergo hydrolysis to form silanols, which subsequently condense to create siloxane crosslinks, producing a three-dimensional network structure.

Although MF3 polymer contains highly reactive functional groups, it remains stable for a certain period under catalyst-free conditions. Moisture control is critical during storage and processing. To ensure formulation stability, the addition of a chemical moisture scavenger is required; vinyl trimethoxysilane is recommended.

MF3 polymer can be processed using conventional mixing equipment. For further technical assistance, please contact our technical support team.