Momentive ME121 Primer for Condensation Cure Silicone Sealant Adhesion

ME121 is a primer engineered to enhance the adhesion of condensation-cure silicone sealants (e.g., TSE382/TSE385/TSE392) to metals, glass, and select plastics. With low viscosity (3 mPa*s) for easy brush/spray application and 30-minute room-temperature drying, it boosts operational efficiency. The solvent blend ( toluene, IPA, n-butanol) suits industrial use.

1. Critical Adhesion Boost : Upgrades challenging metals (e.g., copper/stainless steel) from △ (no primer) to optimal bonding (O).
2. Plastic Limitations : Ineffective on PE/PP/fluorocarbon resins (X), and prohibited on polycarbonate (solvent cracking risk*2).
3. Low-Residue Design : Only 16% non-volatile content at 150°C minimizes interfacial contamination.
4. Rapid Processing : Sealant application feasible after 30-minute drying.

1. Automotive Sensors : Pretreatment for copper sensor housings and glass bonding (Ref: Japan Industrial Maintenance Report, 2018).
2. Curtain Wall Systems : Primer for stainless steel frames and insulated glass structural silicone (Ref: Asian Journal of Building Sealants, 2020).
3. Electronics Encapsulation : Adhesion promoter for epoxy housings and aluminum heat sinks (Ref: Momentive JP Tech Note ME121-SC01).