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Highly weather-resistant formulation for long-term gloss and color retention.
Excellent flow and leveling properties enabling smooth, defect-free film formation.
Low viscosity at high solids content, supporting efficient application and reduced VOC emissions.
Outstanding compatibility with TGIC and HAA-type curing agents for durable thermoset coatings.
Consistent batch-to-batch reproducibility meeting stringent automotive and industrial coating standards.
Automotive exterior clearcoats and basecoat/clearcoat systems.
Premium architectural metal coatings for façades and roofing.
Industrial appliance finishes requiring high scratch and chemical resistance.
Outdoor furniture and garden equipment powder coatings.
General-purpose decorative and protective powder coatings for aluminum and steel substrates.
| Chemical Type | Saturated polyester resin (carboxyl-functional) |
| Product Form | Free-flowing white to off-white granules |
| Appearance | Homogeneous granular solid |
| Acid Value (mg KOH/g) | 26–32 |
| Gardner Color | ≤ 3 |
| Melt Viscosity (140 °C, Pa·s) | 30–50 |
| Softening Point (°C) | 72–78 |
| Primary Applications | Thermosetting powder coatings (TGIC/HAA-cured) |
Q1: What is the primary application of Uralac SN805 in powder coating formulations?
A: Uralac SN805 is specifically designed as a low-viscosity, high-reactivity saturated polyester resin for use in TGIC-free and HAA-based thermosetting powder coatings, particularly where excellent flow, gloss retention, and mechanical durability are required.
Q2: How does Uralac SN805 compare to standard GMA acrylics or other polyesters in terms of curing speed and film formation?
A: Uralac SN805 exhibits faster gelation and improved melt viscosity control during cure compared to many conventional saturated polyesters, enabling efficient crosslinking at typical industrial baking temperatures (160–200 °C) with reduced risk of edge pull or orange peel.
Q3: Is Uralac SN805 compatible with common powder coating additives such as flow agents, degassing agents, and UV stabilizers?
A: Yes — Uralac SN805 demonstrates good compatibility with standard powder coating additives including benzoin, silica-based flow modifiers, and hindered amine light stabilizers (HALS), though final formulation compatibility should always be verified under intended processing conditions.
Q4: What handling and storage conditions are recommended for Uralac SN805?
A: Store in original sealed packaging at temperatures between 5 °C and 30 °C, away from direct sunlight and moisture. Prolonged exposure to elevated temperatures or humidity may affect resin stability and subsequent powder performance.
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E-mail: wangxingqiang@ericwchem.com
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