Overview
SWANCOR 963-P is the pre-promoted (pre-accelerated) grade of SWANCOR 963 terephthalic unsaturated polyester resin. It shares the same resin chemistry, mechanical strength, and corrosion resistance as the base SWANCOR 963 grade, but already contains the cobalt promoter, so fabricators only need to add MEKP catalyst before use.
This ready-to-use formulation simplifies dosing and delivers a consistent 20–30 minute gel time with 1.0% MEKP, reducing setup time and variability on the shop floor. Because it is pre-accelerated, SWANCOR 963-P has a shorter shelf life of 3 months at 25°C, compared with the 6-month shelf life of the unpromoted SWANCOR 963. For applications needing longer stock life or custom promoter tuning, see SWANCOR 963.
Key Benefits
- Pre-promoted (pre-accelerated) — only MEKP catalyst needs to be added before use
- Consistent 20–30 minute gel time with 1.0% MEKP, reducing trial-and-error dosing
- Same mechanical strength, water resistance, and corrosion resistance as base SWANCOR 963
- Suitable for hand lay-up, spray-up, filament winding, and pultrusion
- Complies with U.S. FDA 21 CFR 177.2420 for food and potable water contact after proper post-curing
Applications
- Chemical storage tanks, pipes, scrubbers, and ducts
- Corrosion-resistant flooring when incorporated with aggregates
- Wastewater treatment systems
- Food storage tanks and pure water systems (food-grade after post-cure treatment)
Typical Properties of Liquid Resin
| Property | SWANCOR 963-P |
| Appearance | Turbid liquid |
| Solid Content | 54–60% |
| Viscosity (LVT #3, 60rpm, 25°C) | 280–420 cps |
| Gel Time | 20–30 min (with MEKP 1.0%, pre-promoted, ready to use) |
| Shelf Life (25°C) | 3 months |
| Cured & laminate mechanical properties | Same as SWANCOR 963 (identical base resin chemistry) |
Selection Guide: SWANCOR 963-P vs. SWANCOR 963
Choose SWANCOR 963-P when you want a ready-to-use resin that only requires MEKP catalyst addition, with a predictable 20–30 minute gel time and less variability from promoter dosing on the shop floor — a good fit for fabricators without precise cobalt-dosing equipment or those who want simpler, more consistent processing. Keep in mind the shorter 3-month shelf life means SWANCOR 963-P is best ordered closer to your production schedule rather than held in long-term inventory. If you need a longer 6-month shelf life or want to fine-tune your own promoter and catalyst ratio for a specific gel-time profile, choose the unpromoted SWANCOR 963 instead. Contact our technical team with your fabrication method and production schedule for a grade recommendation.
Packaging and Shipping
SWANCOR 963-P is supplied in 20 kg or 220 kg steel drums, with bulk supply available for large-volume buyers. We ship globally by sea and air freight, with COA and MSDS provided for every shipment. Contact us for current lead times and packaging options.
FAQ
What does the “-P” mean in SWANCOR 963-P?
The “-P” denotes “pre-promoted” (pre-accelerated) — SWANCOR 963-P already contains the cobalt promoter, so only MEKP catalyst needs to be added before use, unlike the standard SWANCOR 963 which requires both promoter and catalyst to be added separately.
Do I still need to add MEKP catalyst to SWANCOR 963-P?
Yes. SWANCOR 963-P is pre-promoted but not pre-catalyzed. Add MEKP catalyst (typically around 1.0%) to initiate cure; this gives a gel time of approximately 20–30 minutes.
Why does SWANCOR 963-P have a shorter shelf life than SWANCOR 963?
Because the cobalt promoter is already blended into SWANCOR 963-P, the resin is more reactive in storage than the unpromoted base grade, resulting in a shorter shelf life of 3 months at 25°C compared with 6 months for SWANCOR 963.
Is SWANCOR 963-P suitable for food and potable water contact?
Yes, since it shares the same resin chemistry as SWANCOR 963. After proper post-curing and steam or hot-water treatment, laminates can comply with U.S. FDA 21 CFR 177.2420.
Do you provide COA and MSDS with SWANCOR 963-P shipments?
Yes, COA and MSDS documentation is provided with every shipment to support your quality control and regulatory compliance requirements.
