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Silquest™ A-189 Silane

Silquest™ A-189 Silane by Momentive Performance Materials is gamma-mercaptopropyltrimethoxysilane. It provides improvement in mineral-filled elastomer properties, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time. Silquest™ A-189 Silane chemically bonds reinforcing minerals such as silica, clay, mica and talc to the polymer matrix.
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Product Type
  • Adhesion Promoters / Compatibilizers > Adhesion Promoters > Silanes
  • Adhesion Promoters / Compatibilizers > Coupling Agents / Compatibilizers > Silanes
  • Crosslinkers / Curing Agents / Hardeners > Silanes
Chemical Composition
Gamma-Mercaptopropyltrimethoxysilane
CAS Number
4420-74-0

Compatiblity with other products

Find products that are predicted to be compatible with Silquest™ A-189 Silane.

This list of compatible products is generated out of estimated HSP values. A practical determination of these HSP values would provide higher certainty.
Learn more about Hansen Solubility Parameters (HSP) and their use in predictive formulation.

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