Silquest® A-Link 600 silane is a non-yellowing adhesion promoter that can provide sealant adhesives and coatings with good flexibility and excellent adhesion compared to other functional silanes. Silquest A-Link 600 silane may be considered for use with SPUR+ technology-based, silicone, urethane, epoxy, silylated polyether and polyurethane adhesives, sealants and coatings.

Formulators using Silquest A-Link 600 silane in SPUR+ prepolymer-based systems typically experience higher elongation and lower modulus than conventional aminosilanes provide. Silquest A-Link 600 can provide the greatest benefit in systems requiring low colour formation and improved flexibility.

Silquest A-Link 600 silane helps formulators develop low yellowing sealant formulations with improved flexibility and high elastic recovery while maintaining the excellent adhesion common to conventional aminosilanes.

This product is a good candidate to consider for use in silicone, epoxy, urethane, silylated polyurethane and polyether adhesives, sealants and coatings:

• Moisture curable, specialty construction sealants
• SPUR+ prepolymer hybrid sealants and adhesives
• Polyurethane sealants
• Silicone RTV applications
• Clearcoats and paints for architectural, automotive, industrial and marine coatings

Features & Benefits

• Low yellowing under UV and thermal exposure
• Helps to optimize sealant modulus and elongation
• Improved joint movement desirable in construction sealants
• Excellent adhesion to a variety of substrates for performance across numerous organic and inorganic surfaces

Performance Data

To determine the colour stability performance, Silquest A-Link 600 and three other silanes were evaluated after four weeks of QUV B exposure. Results showed that Silquest A-Link 600 maintained a colour close to that of the water sample. When formulated appropriately, it can offer significantly lower yellowing compared to other aminosilanes.

Properties