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Polymer ST 81

Technical DataSheet | Supplied by Evonik

Polymer ST 81 by Evonik is a high quality plasticizer-free silane-terminated polymer. Offers high tensile strength combined with exceptional surface hardness after curing. It allows the formulation of both tin- and phthalate-free products. Furthermore, its excellent build-up of strength up to 10 N/mm2 while being manually applicable makes it an interesting product to replace one component and two-component polyurethanes. Polymer ST 81 is suitable for high modulus adhesive formulations. Potential markets include wood construction, transport and automotive, assembly as well as light-weight construction. It has a shelf life of 9 months.

Polymer ST 81 Product details

Product Type
Chemical Composition
Transparent, Colorless
Product Status
Applications/ Recommended for
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Polymer ST 81 Properties


Value & Unit
Test Condition
Test Method
xxxxx mPa.s
Tensile strength (in formulation)
xx N/mm²
Elongation (in formulation)
xx %
Last edited Mar 5, 2018
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