Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® STP31020
SiSiB® STP31020

Silane Terminated Polyether

SiSiB® STP31020 is a trimethoxy silane terminated polyether polymer. It could be applied in moisture curing elastic sealant, elastic structure sealant and sealing coatings. Sealants based on STP31020 not only have excellent adhesion properties, but also have adhesion to broad range of substrates. 

Different from polyurethane and silicone system, this formulation have no solvent and isocyanate, as well as no bubbles and odour generated from curing. It is especially suitable for silicone construction industry, transportation industry and general industry application.

SiSiB® STP31020

Technical Data


Silane Terminated Polyether Polymer


Polypropylene glycol

Reactive Terminal Groups:


CAS No.:


Viscosity 25°C:


Density 25°C:


Boiling point


Melting point

< 0°C

Flash point:

> 237°C


Max. 1%

Water solubility/miscibility

Virtually insoluble


  • SiSiB® STP31020 silane terminated polyether 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-component system.

  • Transportation industry sealant

  • Transparent encapsulate adhesive

  • Personal DIY sealant

  • Eco-friendly decoration sealant

Packing and Storage

  • SiSiB® STP31020 is supplied in 200Kg steel drum or 1000Kg IBC tote.

  • In the unopened original container SiSiB® STP31020 has a shelf life of one year in a dry and cool place.

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SiSiB® STP31020