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High chemical resistance to solvents, acids, and alkalis.
Excellent weathering stability and UV resistance for outdoor durability.
Low viscosity enabling easy processing and high solids content formulation.
Good adhesion to various substrates including metals and plastics.
Designed for low-VOC, high-performance powder coating systems.
Architectural metal coatings for façades and roofing.
Appliance coatings for refrigerators, ovens, and washing machines.
Automotive under-hood components requiring thermal and chemical resilience.
Outdoor furniture and garden equipment finishes.
Industrial machinery and agricultural equipment protective coatings.
| Chemical Type | Saturated polyester resin |
| Product Form | Free-flowing white to off-white powder |
| Appearance | Homogeneous granular powder |
| Primary Applications | Powder coatings for functional and decorative finishes |
| Key Features | High crosslink density, excellent flow and leveling |
| Benefits | Enhanced mechanical properties, reduced film defects, improved curing efficiency |
| Storage Conditions | Store in cool, dry place below 25 °C; protect from moisture |
| Compatibility | Compatible with standard triglycidyl isocyanurate (TGIC) and hydroxyl-functional curing agents |
Q1: What is the primary application area for DYNAPOL LH 773?
A: DYNAPOL LH 773 is specifically designed as a reactive diluent and viscosity modifier in high-solids and solvent-free unsaturated polyester (UP) and vinyl ester resin systems, commonly used in industrial gel coats, laminating resins, and casting applications where low volatility and improved handling are required.
Q2: How does DYNAPOL LH 773 differ from conventional styrene-based reactive diluents?
A: Unlike styrene, DYNAPOL LH 773 is a saturated polyester resin with low volatility and negligible odor, offering improved workplace safety and reduced VOC emissions. It participates in the crosslinking reaction without generating volatile by-products, contributing to enhanced surface cure and reduced styrene emission during processing.
Q3: Is DYNAPOL LH 773 compatible with common peroxide initiators used in UP systems?
A: Yes, DYNAPOL LH 773 is fully compatible with standard organic peroxides such as MEKP and BPO, and does not interfere with typical free-radical curing mechanisms. No special initiator adjustments are generally needed, though optimal dosage should be confirmed through small-scale formulation trials.
Q4: Can DYNAPOL LH 773 be used in food-contact or potable water applications?
A: DYNAPOL LH 773 is not pre-qualified for direct food-contact or potable water applications. Its suitability for such uses requires full regulatory assessment by the end-user, including evaluation of final cured system compliance with applicable regional food safety regulations.
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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
