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Excellent weather resistance and UV stability for long-term outdoor performance.
Low viscosity enabling high solids content formulations with improved application efficiency.
Outstanding gloss retention and color stability in powder coating systems.
Good chemical resistance to mild acids, alkalis, and solvents after curing.
Optimized reactivity profile for balanced flow, leveling, and mechanical properties in TGIC-free systems.
Architectural aluminum extrusions for façades and window frames.
Outdoor furniture and garden equipment coatings.
Agricultural and construction machinery components.
Automotive non-under-hood exterior trim parts.
Street lighting fixtures and traffic infrastructure elements.
| Chemical Type | Saturated polyester resin (carboxyl-functional) |
| Product Form | Pale yellow to light amber solid granules |
| Appearance | Free-flowing granular solid |
| Acid Value (mg KOH/g) | 26–30 |
| Molecular Weight (Mn, GPC) | 2,800–3,400 |
| Glass Transition Temperature (Tg, °C) | 68–72 |
| Primary Applications | Standard and super-durable TGIC-free powder coatings |
| Key Features | High UV resistance, low melt viscosity, excellent storage stability |
Q1: What is the primary application of Uralac SN883 in powder coating formulations?
A: Uralac SN883 is specifically designed as a low-viscosity, high-reactivity saturated polyester resin for use in high-gloss, durable thermoset powder coatings—particularly where excellent flow, leveling, and resistance to yellowing under UV exposure are required.
Q2: Which curing agents is Uralac SN883 typically compatible with?
A: It is formulated for compatibility with standard triglycidyl isocyanurate (TGIC) and hydroxyalkyl amide (HAA) crosslinkers, enabling flexibility in formulating both TGIC-containing and TGIC-free systems without compromising cure response or film integrity.
Q3: How does Uralac SN883 contribute to powder coating storage stability?
A: Its controlled acid value and molecular weight distribution support extended shelf life at ambient conditions, helping minimize premature agglomeration and maintaining consistent powder flow and electrostatic charging behavior during application.
Q4: Is Uralac SN883 suitable for indoor or outdoor applications—or both?
A: Due to its saturated backbone and optimized structural design, Uralac SN883 delivers strong performance in both interior and exterior powder coating applications, offering good resistance to weathering, humidity, and thermal cycling when properly formulated and cured.
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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
