Polyurethane Acrylate Oligomer (PUA) for UV Adhesives
CAS Number: 72162-39-1
Polyurethane Acrylate Oligomer (PUA) combines the flexibility and toughness of polyurethane chemistry with the fast UV-curable functionality of acrylates, delivering soft, elastic, yet adherent UV-cured adhesives and coatings. PUA-based formulations offer outstanding peel strength, elongation, and impact resistance, making them ideal for flexible electronics, medical device bonding, and pressure-sensitive UV adhesives. A wide range of grades—from soft and elastic to hard and rigid—is available.
Technical Specifications
| color | ≤2 (Gardner) |
| viscosity | 3,000–100,000 mPa·s (25 °C, grade dependent) |
| appearance | Colorless to pale yellow viscous liquid |
| functionality | 2–6 (grade dependent) |
| inhibitorContent | 500–1000 ppm MEHQ |
Applications
- Flexible electronics assembly adhesives
- Medical device and wearable bonding
- UV pressure-sensitive adhesives (PSA)
- Flexible optical bonding films
- UV-curable conformal coatings
Key Features
- Excellent flexibility and elongation after UV cure
- High peel strength for elastic bonding
- Wide hardness range from soft elastic to rigid
- Good adhesion to flexible substrates
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CAS Number
72162-39-1
Category
Adhesive / Sealant AdditivesAvailability
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