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High-solids, low-viscosity unsaturated polyester resin for efficient processing and reduced VOC emissions.
Excellent mechanical strength and impact resistance in cured composites.
Good compatibility with standard peroxide initiators and common fillers/fibers.
Fast gel time and high reactivity enabling short cycle times in compression and injection molding.
Consistent batch-to-batch performance supported by stringent Allnex quality control.
Automotive under-the-hood components (e.g., air intake manifolds, covers).
Industrial enclosures and electrical housings requiring flame-retardant formulations.
Reinforced thermoset parts for construction and infrastructure (e.g., grating, panels).
High-performance SMC/BMC compounds for structural and semi-structural applications.
| Chemical Type | Unsaturated polyester resin |
| Product Form | Liquid |
| Appearance | Clear to slightly hazy, pale yellow liquid |
| Primary Applications | SMC, BMC, compression molding, injection molding |
| Key Features | High reactivity, low viscosity, high solids content |
| Benefits | Improved mold filling, reduced cycle time, enhanced surface finish |
| Storage Stability | ≥6 months at ≤25 °C in sealed containers |
Q1: What is the primary function of SETAPOLL SP254 in polyester resin systems?
A: SETAPOLL SP254 is a reactive diluent and viscosity modifier designed to reduce the viscosity of unsaturated polyester resins without significantly compromising reactivity or final mechanical performance. It participates in the free-radical curing process, becoming part of the polymer network.
Q2: Is SETAPOLL SP254 compatible with standard peroxide initiators used in polyester processing?
A: Yes, SETAPOLL SP254 is fully compatible with common organic peroxides such as MEKP and BPO, and does not interfere with typical gel time or cure profile when used within recommended dosage ranges.
Q3: How does SETAPOLL SP254 compare to styrene in terms of VOC content and handling safety?
A: SETAPOLL SP254 is a low-VOC alternative to styrene, offering reduced volatility and lower odor. While it still requires appropriate industrial hygiene controls, its higher boiling point and lower vapor pressure contribute to improved workplace exposure profiles compared to conventional styrenic diluents.
Q4: Can SETAPOLL SP254 be used in applications requiring FDA-compliant coatings or food-contact surfaces?
A: SETAPOLL SP254 is not pre-approved for direct food-contact applications under FDA or EU frameworks. Its suitability for such uses depends on full formulation evaluation, including extraction testing and regulatory review by the end-user’s compliance team.
Q5: What storage conditions are recommended to maintain product stability?
A: Store SETAPOLL SP254 in tightly sealed containers under cool, dry conditions, away from direct sunlight and sources of heat or ignition. Prolonged exposure to elevated temperatures or air may lead to premature polymerization; inhibitors are present but require proper handling to ensure shelf life.
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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
