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Silane Primer for Architectural Coatings

CAS Number: 1760-24-3

Silane primers for architectural coatings are organosilane-based systems applied to mineral substrates (concrete, masonry, stone) to improve adhesion of subsequent paint layers and provide deep penetrating water repellency. They react with surface hydroxyl groups to form durable siloxane bonds that bond the coating to the substrate and reduce moisture ingress. Silane primers are particularly valuable for exterior facade systems, repair coatings, and demanding substrate preparation.

Technical Specifications

density0.85–1.05 g/cm³
solventWater or aliphatic hydrocarbon
appearanceClear colorless to pale yellow liquid
activeContent20–100%
penetrationDepth5–20 mm on concrete

Applications

  • Concrete and masonry primer treatment
  • Exterior facade preparation
  • Repair mortar and patching systems
  • Stone and brick protection
  • Pre-treatment before render application

Key Features

  • Deep penetrating water repellency on mineral substrates
  • Forms durable siloxane bonds with substrate
  • Improves adhesion of subsequent paint layers
  • Reduces efflorescence and moisture-related defects

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Silane Primer for Architectural Coatings chemical structure

CAS Number

1760-24-3

Availability

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