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Highly stable saturated polyester structure ensuring excellent hydrolytic resistance and long-term durability.
Low volatile organic compound (VOC) content, compliant with stringent environmental and regulatory standards.
Optimized for UV stability and weatherability in outdoor coating applications.
Excellent compatibility with melamine-formaldehyde crosslinkers and conventional solvent-based systems.
Consistent batch-to-batch performance with narrow molecular weight distribution.
Automotive OEM and refinish topcoats requiring high gloss and color retention.
Industrial coil coatings for pre-painted metal substrates.
General-purpose decorative and protective coatings for metal furniture and appliances.
High-performance powder coating formulations (when modified or blended).
Architectural metal cladding and facade systems exposed to harsh environmental conditions.
| Chemical Type | Saturated polyester resin |
| Product Form | Liquid, solvent-borne |
| Appearance | Clear to pale yellow viscous liquid |
| Primary Applications | Thermosetting coatings, especially melamine-cured systems |
| Key Features | UV resistance, hydrolytic stability, low VOC, good flow and leveling |
| Benefits | Enhanced weathering performance, reduced film defects, improved storage stability |
| Typical Solvent System | Xylene/butyl acetate/toluene blend |
| Storage Conditions | Store in sealed containers at 15–30°C; protect from freezing and direct sunlight |
Q1: What is the primary application of NOVASYNT 8815-S70 in coating systems?
A: NOVASYNT 8815-S70 is specifically engineered as a reactive diluent and viscosity modifier for high-solids and low-VOC saturated polyester-based coil and can coatings, where it contributes to improved film formation, flow, and crosslink density without compromising chemical resistance.
Q2: How does NOVASYNT 8815-S70 differ from unsaturated polyester resins in terms of reactivity and stability?
A: Unlike unsaturated polyesters, NOVASYNT 8815-S70 contains no carbon–carbon double bonds in its backbone, making it inherently non-reactive toward free-radical curing mechanisms. This provides superior storage stability, reduced sensitivity to peroxides or UV initiators, and compatibility with thermally cured systems using TGIC or β-hydroxyalkylamide crosslinkers.
Q3: Can NOVASYNT 8815-S70 be used in food-contact compliant coatings?
A: NOVASYNT 8815-S70 is formulated to support compliance with global food-contact regulations when incorporated into fully cured, qualified coating systems. Final regulatory acceptance depends on the complete formulation, cure conditions, and intended end-use — users should validate compliance through certified testing laboratories.
Q4: What are the recommended handling and storage conditions for this resin?
A: Store in tightly sealed original containers at temperatures between 10 °C and 30 °C, away from direct sunlight and sources of heat or ignition. Avoid prolonged exposure to moisture or strong oxidizing agents. Prior to use, ensure thorough mixing if phase separation is observed after extended storage.
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E-mail: wangxingqiang@ericwchem.com
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