Unsaturated Polyester Resin
BUP 690 is a pre-promoted (amine-accelerated) orthophthalic based unsaturated polyester resin with low viscosity
•Low viscosity
•Very good mechanical properties
•Outstanding filler binding power
Technical Properties:
| Property | Unit | Value | Test method |
Appearance Color Viscosity (at 25°C) Density (at 23°C) Acid number Solid content Gel time Curing time Peak exothermic temperature Water absorption Flash point (open cup) | NA Gardner mPa.s (cP) g/cm³ mg KOH/g wt% min min °C wt% °C | Clear, Greenish NA 300-450 1.1227 Max 26 63±2 4-9 4-8 Max 210 Max 0.3 20 | NA ASTM D1544 ISO 2555 ASTM D1475 ASTM D1639 ASTM D1259 ASTM D2471 ASTM D2471 ASTM D2471 ISO 62 ASTM D92 |
* Promoter: 0.5 g Cobalt (1%) in 100 g resin @25 °C
Initiator: 2 g MEKP (50%) in 100 g resin