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High chemical resistance, especially to solvents, acids, and alkalis.
Excellent weathering and UV stability for long-term outdoor performance.
Low viscosity enabling easy formulation and improved flow/leveling in coatings.
Good compatibility with melamine formaldehyde crosslinkers and common additives.
Designed for high-gloss, durable thermoset powder and liquid coating systems.
Architectural metal coatings (e.g., aluminum composite panels and curtain walls).
Appliance coatings for refrigerators, washing machines, and ovens.
Automotive non-structural parts (e.g., trim, grilles, and under-hood components).
General industrial maintenance and protective coatings.
Powder coatings requiring superior durability and color retention.
| Chemical Type | Saturated polyester resin |
| Product Form | Pale yellow to light amber viscous liquid |
| Appearance | Clear, homogeneous liquid |
| Primary Applications | Powder and liquid thermoset coatings |
| Key Features | High crosslink density, low VOC potential, excellent film integrity |
| Benefits | Enhanced mechanical hardness, corrosion resistance, and gloss retention |
| Storage Stability | Stable at 20–25 °C for ≥12 months in sealed containers |
Q1: What is the primary application of DYNAPOL LH 822 in coating systems?
A: DYNAPOL LH 822 is a low-viscosity, high-solids saturated polyester resin designed primarily as a reactive binder in high-performance coil and can coatings, where it contributes to excellent gloss retention, hardness development, and resistance to mechanical stress and chemical exposure.
Q2: Is DYNAPOL LH 822 compatible with common crosslinkers used in industrial baking finishes?
A: Yes — DYNAPOL LH 822 is formulated to react efficiently with standard amino resins (e.g., melamine-formaldehyde types) and can also be used with alternative crosslinkers such as blocked isocyanates, depending on the desired cure profile and end-use performance requirements.
Q3: How does DYNAPOL LH 822 support formulation flexibility for low-bake or energy-efficient curing?
A: Its tailored molecular structure enables good reactivity at reduced cure temperatures (e.g., 140–160 °C), supporting faster line speeds and lower energy consumption without compromising film integrity or adhesion to metal substrates.
Q4: Can DYNAPOL LH 822 be used in food-contact compliant coatings?
A: DYNAPOL LH 822 is suitable for use in coatings intended for food-contact applications when formulated and processed in accordance with applicable regulatory frameworks; final compliance depends on the full formulation, curing conditions, and intended contact scenario — consult Evonik’s regulatory documentation and qualified technical service for specific guidance.
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E-mail: wangxingqiang@ericwchem.com
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