Silane Terminated Polyether

Introduction

SiSiB® STP51281 is alkoxy silane terminated polyether polymer. It can be used in moisture curing elastic sealant, elastic structure sealant and sealing coatings to achieve excellent adhesion to broad range of substrates.

SiSiB® STP51281 based system is free of solvent, isocyanate, bubbles and odour during curing, which is quite different from polyurethane and silicone system. It is especially suitable for construction industry, transportation industry and general industry application.

Physical Properties

Features

• High activity, Medium - high modulus

• High transparence

• Good adhesion strength and tensile elasticity

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

• Excellent anti-aging, anti-yellowing property

• Excellent water resistance, chemical resistance to chemical corrosion

• Excellent storage stability

• Solvent free, odorless, eco-friendly

Application

SiSiB^® STP51281 polymer can be used as base polymer in elastic sealants, elastic structure sealants, encapsulate adhesives and coatings by moisture curing; it is suitable for both single component and two-component system.

• Personal DIY sealant

• Industrial sealant

• Transparent sealant

• Transportation industry elastic sealant

• Eco-friendly decoration sealant

Processing

• SiSiB® STP51281 polymer dissolves readily in standard organic solvents. It is virtually insoluble in aqueous media, and react slowly releasing methanol and ethanol forming inert material. Despite its highly reactive terminal groups, uncatalyzed SiSiB® STP51281 is stable in air for several days. However, its reactivity with water or atmospheric humidity must be taken into account during storage and processing, since the material will slowly starts to condensate.
  

• SiSiB® STP51281 polymer can be formulated by conventional methods and mixing processes. Water scavengers should be added to stabilize the formulations against premature curing during compounding or as a result of exposure to moisture during storage, particularly for vinyltrimethoxysilane.