LR-2925 Polyaspastic Resin

LR-2925 is a solvent-free polyaspartic resin with a bis-secondary amine structure, engineered as a primary resin for coating systems requiring high mechanical flexibility and durability. Its molecular architecture is optimized for long-chain extension, providing a unique balance of low viscosity and exceptional cold resistance.

For technical engineers designing coatings for fluctuating climates, LR-2925 serves as a high-performance reactive backbone that remains stable and crack-free even at temperatures as low as -35°C, ensuring long-term protection for dynamic substrates.

Technical Performance

In the B2B coatings sector, LR-2925 is recognized for its ability to enhance the mechanical resilience of aliphatic polyurea systems:

1. Superior Cold Resistance & Flexibility

With a high NH equivalent (1135 g/mol ), LR-2925 forms a more flexible polymer network compared to standard polyaspartic resins. This property is critical for coatings applied on surfaces subject to thermal expansion, such as metal roofs or exterior walls, preventing the brittle failure common in traditional materials.

2. Industry-Leading Weatherability (4,000h QUV-A)

Durability is non-negotiable for outdoor infrastructure. LR-2925 maintains over 95% of its performance after 4,000 hours of QUV-A exposure. It provides a robust shield against UV radiation and oxidation, preventing chalking and ensuring the aesthetic integrity of the topcoat for years.

3. Rapid Surface Drying for High Efficiency

While offering significant flexibility, LR-2925 does not compromise on productivity. It delivers faster dry times compared to traditional hydroxyl acrylic resins, allowing for quicker recoat windows and reduced labor costs in large-scale projects.

4. Exceptional Substrate Adhesion

Designed for versatility, this polyaspartic resin ensures strong interfacial bonding across multiple substrates, including concrete, metals, and plastics. This high adhesion strength prevents peeling and delamination in high-moisture or corrosive environments.

Technical Specifications (TDS Data)

Our production process follows strict quality control standards to ensure that every batch of LR-2925 meets the specific requirements of industrial formulators:

Applications

Thanks to its high NH equivalent and molecular resilience, LR-2925 is the preferred choice for formulators developing high-performance aliphatic polyurea systems in the following areas:

• Resilient Outdoor Waterproofing: Ideal for exterior walls and roofs where high weatherability and abrasion resistance are required. Its ability to bridge micro-cracks makes it perfect for environments with significant thermal movement.

• High-Elastic Protective Topcoats: Optimized for swimming pools, kitchens, and bathrooms. It provides a seamless, waterproof barrier with superior elongation to withstand constant water immersion and structural shifts.

• Sports & Multi-purpose Flooring: Specifically designed for resilient flooring systems, such as basketball courts, tennis courts, and high-end residential garage decks where foot comfort and impact absorption are essential.

• Industrial Infrastructure: A robust solution for steel structures and petroleum pipelines, offering long-term anti-corrosion protection in high-exposure industrial zones.

Packaging, Storage, and Handling

• Standard Packaging: Available in high-quality, UN-certified 200 KG drums. 1-ton IBC tanks are also available for bulk industrial requirements.

• Shelf Life: 12 months when stored in original, unopened, and undamaged containers.

• Storage Conditions: Maintain at temperatures ≤ 30°C  in a cool, dry, and well-ventilated area away from heat sources or open flames.

• Safety Compliance: Please refer to the LR-2925 Material Safety Data Sheet (MSDS) for detailed information regarding chemical inventory, hazards, and handling methods.

Technical Support and Sample Requests

Ruqinba Group is committed to supporting your product innovation. Whether you are adjusting pot life for a specific climate or optimizing the flexibility of a new topcoat, our engineering team is ready to assist.

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