M4000H MS Polymer / Silyl-Terminated-Polyether

M4000H is an alkoxy silane-terminated polyether polymer designed for use in moisture-curing elastic sealants, structural sealants, and sealing coatings. Sealants formulated with M2030T offer excellent adhesion to a wide variety of substrates.

Unlike traditional polyurethane and silicone systems, this formulation is free of solvents and isocyanates, and cures without generating bubbles or odor.

It's particularly well-suited for applications in the construction, transportation, and general industrial sectors.

Typical properties

Polymer Type ：         Silane modified polyether

Appearance  ：           Slight yellow viscous liquid

Boiling Point ：          ＞250℃

Gravity ：                   1.0 g/cm3

Viscosity ：                15000-30000 mPa·s (25℃)

Flash Point：              ≥237℃

Water-Soluble ：        Virtually Insoluble

Shelf Life：                  ≥12 months（25℃/50% RH）

Moderate Activity , Moderate Modulus

High transparency

Excellent bond strength and tensile elasticity

Fast curing , non-tin catalysts used if needed, more eco-friendly

Excellent aging and yellowing resistance

Excellent water resistance , resistance to chemical corrosion

Excellent elastic recovery rate

Excellent storage stability

Solvent free , odourless , eco-friendly

Could be blended with other Risun polymers

M4000H 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 twocomponents system.

◼ Industrial adhesives

◼ Building sealant

◼ Transportation industry elastic sealant

◼ Personal DIY sealant

◼ Eco-friendly decoration sealant

1.Siwin-M4000H can react with water or by absorbing moisture from the air, so it is important to isolate moisture during storage and production.

2. The dosage of Siwin-M4000H can be flexibly changed in the formulation design, and it can be mixed with most fillers such as nano calcium carbonate, heavy calcium carbonate, fumed silica, quartz powder, diatomaceous earth, aluminum hydroxide, etc..

3. In order to avoid pre-curing of the product, it is necessary to remove water from the filler. Siwin-V31 is generally used as a water scavenger.

4.In order to get better performance, you can mix other additives together, for example, tackifiers, antioxidants, mildew inhibitors, light stabilizers, etc.