Orthophthalic Resin
- Marine Grade 

Designed for high-performance marine laminates, this orthophthalic resin is ideal for FRP boat hulls, hatches, panels, and tanks. Its crystal-clear appearance and controlled reactivity allow for smooth processing using hand lay-up and spray-up techniques, ensuring compatibility with chopped strand mats (CSM) and woven roving systems.

Optimised for New Zealand's moderate workshop conditions (18°C–28°C), this resin offers predictable curing performance. At 25°C using 1.5% MEKP, the gel time is approximately 13.5 minutes, enabling a workable open time for lay-up without premature curing. The final laminate reaches full crosslinking with a peak exotherm around 188°C, resulting in excellent mechanical bonding and hydrolysis resistance.

Key Applications

• Marine hulls, canopies, covers, tanks, and panel laminates

• Fabrication of FRP structures with exposure to fresh and saltwater

• Hand lay-up and spray-up compatible

• Suitable for use with CSM, woven roving, and ARG fibre systems
  
  

Recommended Conditions

• Ambient workshop temperature: 18°C–28°C

• Avoid application below 15°C or in high humidity environments

• Ensure good ventilation and consistent airflow to promote even curing

• Adjust MEKP dosage (typically 1.0–2.0%) to fine-tune gel/cure behaviour
  
  

Storage & Shelf Life

• Shelf life: 3 months from date of manufacture

• Store at <25°C in airtight containers

• Keep away from heat, ignition sources, and direct sunlight

• Avoid moisture contamination to preserve resin quality