Silquest® A-Link 235 silane is an amino-functional oligosiloxane adhesion promoter used in a broad range of adhesive, coating and sealant applications. In addition to adhesion promotion, it can also modify the physical properties of hybrid and RTV sealants by increasing strength and elasticity, while decreasing residual surface tack of the final cured product, as well as reduce yellowing in sealant formulations.

Features & Benefits

In hybrid, polyurethane and RTV silicone sealants and adhesives:

• Multi amino functionality for improved adhesion especially under wet conditions
• Excellent reactivity
• Low levels of octamethylcyclotetrasiloxane and decamethylcyclopentasiloxane (D4, D5)
• Excellent elasticity and elastic recovery in support of advanced ISO 11600 classification
• Low sealant residual surface tack

In filled and unfilled oxime silicone sealants:

• Multi amino functionality for improved adhesion especially under wet conditions
• Manufactured without the use of MEKO to support MEKO free formulations
• Advanced reactivity
• Excellent elasticity and elastic recovery in support of advanced ISO 11600 classification
• Low sealant residual surface tack

Properties

Appearance ……………………………………. Pale yellow liquid
Flash Point (closed cup) ASTM D56 …… 130 °C (26.6 F)
Boiling Point (1013 hPa) ……………………. >300 °C (>572 ‘F)
Density (20 °C) DIN 51757 ………………… 0.98 g/cm³
Viscosity(23 °C) ………………………………… 10-60 mPa•s