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High crystallinity enabling rapid melt solidification and excellent dimensional stability.
Outstanding thermal resistance with continuous use temperature up to 150°C.
Low moisture absorption (<0.2% at 23°C/50% RH), ensuring consistent processing and end-product performance.
Excellent chemical resistance to aliphatic hydrocarbons, weak acids, and common solvents.
Good flow characteristics for precision injection molding of thin-walled and complex geometries.
Automotive under-hood components including sensor housings and connector parts.
Electrical and electronic enclosures requiring flame-retardant compatibility and dimensional reliability.
Industrial fluid handling components such as pump bodies and valve housings.
Consumer appliance structural parts exposed to elevated ambient temperatures.
Food-contact-approved housings (compliant with FDA 21 CFR §177.1450) for kitchen equipment.
| Chemical Type | Copolyester (crystalline, PET-based) |
| Product Form | Pellets |
| Appearance | Off-white, semi-crystalline granules |
| Melt Temperature (DSC, 10°C/min) | 258–262°C |
| Relative Viscosity (0.5 g/dL in o-chlorophenol) | 1.12–1.18 |
| Density (ASTM D792) | 1.34–1.36 g/cm³ |
| Moisture Content (as received) | ≤0.05 wt% |
| Primary Applications | High-precision injection-molded engineering components |
Q1: What is the primary function of GM-470 in powder coating formulations?
A: GM-470 serves as a crystalline polyester resin that functions primarily as a flow and leveling agent, helping to reduce melt viscosity during curing and promoting uniform film formation without excessive sagging or edge pull.
Q2: Is GM-470 compatible with standard epoxy-based or hybrid powder coating systems?
A: Yes, GM-470 exhibits good compatibility with common epoxy, triglycidyl isocyanurate (TGIC), and hydroxyalkyl amide (HAA) curing systems, enabling its use in both pure polyester and hybrid thermoset powder coatings.
Q3: How does GM-470 differ from amorphous polyester resins in processing behavior?
A: Unlike amorphous polyesters, GM-470’s crystalline structure imparts sharper melting characteristics and lower storage viscosity in the solid state, which enhances storage stability and enables more controlled melt rheology during extrusion and curing.
Q4: What are recommended handling and storage conditions for GM-470?
A: Store in a cool, dry environment below 30 °C and protect from moisture and direct sunlight. Due to its crystalline nature, avoid prolonged exposure to high humidity or temperature fluctuations to prevent agglomeration or premature partial melting.
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E-mail: wangxingqiang@ericwchem.com
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