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High-solids, low-viscosity unsaturated polyester resin for efficient processing and reduced VOC emissions.
Excellent compatibility with standard styrene monomers and common free-radical initiators.
Superior mechanical strength and dimensional stability in cured composites.
Good resistance to water, alkalis, and mild acids after full cure.
Consistent batch-to-batch performance optimized for automated impregnation and molding processes.
Fiberglass-reinforced plastic (FRP) tanks and vessels for chemical storage.
Pultruded profiles used in construction, infrastructure, and corrosion-resistant structural components.
Sheet molding compound (SMC) for automotive exterior and under-hood parts.
Continuous laminating of panels for architectural cladding and industrial enclosures.
Centrifugal casting of pipes and fittings in wastewater and irrigation systems.
| Chemical Type | Unsaturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to pale yellow, homogeneous liquid |
| Primary Applications | Pultrusion, SMC, centrifugal casting, continuous lamination |
| Key Features | High reactivity, low shrinkage, excellent fiber wet-out |
| Benefits | Improved production speed, enhanced surface finish, reduced porosity |
| Styrene Content (typ.) | 38–42 wt% |
| Storage Stability | ≥6 months at 25°C in sealed container |
Q1: What is the primary function of SETAPOLL SP301 in coating formulations?
A: SETAPOLL SP301 is a reactive polyester resin designed to serve as a crosslinker or co-resin in thermosetting powder and liquid coatings, enhancing film hardness, flexibility, and chemical resistance without requiring external catalysts.
Q2: Is SETAPOLL SP301 suitable for food-contact compliant coatings?
A: SETAPOLL SP301 is formulated to support compliance with general food-contact regulations when used in approved systems and final cured films; however, full compliance depends on the complete formulation, curing conditions, and end-use application — validation by the coating formulator is required.
Q3: How does SETAPOLL SP301 perform under thermal curing conditions?
A: It exhibits good reactivity in standard thermal cure cycles (typically 160–200 °C), offering balanced gel time and flow characteristics to support smooth film formation and efficient crosslinking with common functional groups such as hydroxyl or carboxyl.
Q4: Can SETAPOLL SP301 be blended with other resin types?
A: Yes — it demonstrates good compatibility with acrylics, epoxies, and other polyester resins in hybrid systems, enabling tailored performance profiles such as improved weatherability or enhanced mechanical properties.
Q5: What are the recommended storage conditions for SETAPOLL SP301?
A: Store in original sealed containers at temperatures between 5 °C and 30 °C, protected from moisture, direct sunlight, and freezing; prolonged exposure to elevated temperatures may affect viscosity stability.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
