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QA3781 is a solvent-based aromatic polyester urethane adhesive formulated with a crosslinking agent to create a durable bonding system. Ideal for laminating vinyl to nylon and bonding stiff materials like cotton duck, rubber, and plastics. It offers tensile strength of 2400–3600 psi and elongation of 675–750%. Solids content is 40 ± 1%, viscosity ranges from 12,500–25,000 cPs, and flash point is 25°F. Compatible with QZ303 crosslinker and optional QZ14 catalyst. Cures at 200–250°F in 1–3 minutes.
Designed for demanding lamination and bonding applications, QA3781 delivers high flexibility and strength. Its compatibility with various substrates and crosslinking systems makes it a versatile solution for industrial adhesives. The solvent system of MEK and toluene ensures fast drying and strong adhesion. Ideal for film laminations, PVC bonding, and general-purpose adhesive needs.
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| Chemistry | Solvent-borne & Moisture Cure Urethanes |
|---|---|
| pH | N/A |
| Solids Content % | 40 ± 1 |
| viscosity | 12,500–25,000 |
| Volatile Organic Compounds | N/A |
QA3781 Technical Data Sheet
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