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LR-1520
Ruqinba
LR-1520 is a premium, solvent-free polyaspartic resin featuring a bis-secondary amine structure.
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LR-1520 is a premium, solvent-free polyaspartic resin featuring a bis-secondary amine structure. Engineered by Shenzhen Ruqinba Group, this high-purity resin is designed to react with aliphatic polyisocyanates (such as HDI trimers) to create next-generation coating systems that balance extreme durability with rapid application efficiency.
Whether you are formulating low-VOC automotive finishes or heavy-duty industrial floorings, LR-1520 provides the chemical backbone needed for superior mechanical properties and long-term environmental resistance.
For coating manufacturers and technical engineers, the choice of raw materials directly impacts the final product's ROI and market reputation. LR-1520 stands out through:
In the competitive world of industrial painting, time is money. LR-1520 exhibits high reactivity, achieving surfac dryness within 120 minutes when cured with HDI trimers. This allows contractors to complete projects in a single day, significantly reducing facility downtime.
Unlike traditional epoxy systems, our polyaspartic resin is inherently UV-stable. After 4000 hours of QUV-A testing, the cured film retains over 95% of its original properties without chalking or degradation. It is the ultimate choice for outdoor structures and marine environments.
Achieve a pencil hardness of 2H without sacrificing impact resistance. LR-1520 remains crack-free at temperatures as low as -35°C, ensuring that coatings can withstand the stresses of substrate thermal expansion and contraction in extreme climates.
With a solids content of 96±3%, LR-1520 enables the formulation of 100% solid content, zero-VOC coatings. It delivers an exceptional finish with high gloss and excellent leveling properties, meeting the strictest environmental regulations globally.
As a leading polyaspartic resin manufacturer, Ruqinba ensures every batch of LR-1520 meets rigorous quality standards:
| Parameter | Specification Range | Test Method |
| Appearance | Colorless to light yellow transparent liquid | Visual |
| NH Equivalent ( g/mol ) | 290 | Theoretical |
| Viscosity (mPa·s @ 25°C) | 500 - 2000 | GB/T 9751.1-2008 |
| Solids Content (%) | 96 ± 3 | Q/RQB 5005-2025 |
| Amine Value (mgKOH/g) | 180 - 205 | Q/RQB 3013-2025 |
| Density (Water=1, 25°C) | 1.02 - 1.08 | GB/T 15223-2008 |
Note: The data represents typical values only and should not be considered as specifications or guaranteed values for the material unless explicitly agreed upon in writing.
LR-1520 is a versatile polyaspartic resin compatible with various hydroxyl acrylic resins and cellulose acetate butyrate (CAB). Its applications include:
High-End Paints: Formulation of high-solid color pastes and deep black finishes for the automotive and premium wood sectors.
Protective Coatings: Topcoats for petroleum pipelines, steel structures, and walls exposed to corrosive elements.
Waterproofing Systems: Seamless protective layers for swimming pools, roofs, and concrete infrastructure.
Industrial Flooring: Ideal for residential garages, high-traffic sports surfaces, and protective coatings for foam sculptures.
Renewable Energy: Specialized gel coats and topcoats for wind turbine blade protection.
One of the greatest strengths of LR-1520 is its adaptability. Depending on the curing agent selected, technical teams can tailor the mechanical outcome:
For Elastic Materials: Blend with flexible hardeners to achieve 400% elongation and 25 MPa tensile strength.
For Rigid Systems: Blend with HDI trimers/dimers for high-impact, abrasion-resistant rigid films.
Ruqinba Group provides comprehensive technical support and customized polyaspartic resin solutions. Contact our engineering team today for technical data, MSDS documents, or to request a sample for your next innovation.