M305D MS Polymer / Silyl-Terminated-Polyether

Siwin-M305D is a silane terminated polyether, which is endcapped by trimethoxysilyl group, the main chain is PPO (polypropylene oxide). It hydrolyzes in the presence of moisture with catalyst (such as: amine catalysis, or Tin and other heavy metal) by releasing methanol and finally form a stable siloxane network. It is a clear liquid polymer with the high reactivity, which is made into the sealant and adhesive.

Then products have excellent adhesion, weather resistance, better environmental protection etc

Typical properties

Siwin Brand:                                   Siwin-M305D

Chemical Name：                          Silane modified polyether / MS Polymer

CAS No.:                                         216597-12-7

Appearance :                                  Colorless Clear Liquid

Viscosity (25℃) / mpa·s:                 1400-1600

Density (25℃) / g/cm3::                 1.002-1.005

PH value:                                         6-8

Chemical Structure:

High Activity , High Modulus

High transparence

Good adhesion 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 storage stability

Solvent free , odourless , eco-friendly

Could be blended with other Risun polymers

Application

M305D is the main resin raw material for the production of adhesives, sealants, potting compounds and coatings. It solidifies by absorbing moisture in the air under the action of catalysts (such as amines, tin, etc.) at room temperature. According to needs, we can design it into a one-component or two-component system formula product with high hardness, which can widely bond different substrates.

Siwin-M305D can react with water or by absorbing moisture from the air, so it is important to isolate moisture during storage and production.

The dosage of Siwin-M305D 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..

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.

Commonly used plasticizers are phthalates (PPG, DOP, DINP, DIDP, etc.), low molecular weight polyethers, etc.

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

IBC plastic drum：1000kgs

Steel drum lined with aluminum foil bag: 200kgs

(Other packaging can be customized.)