Bio-Based Polyaspartic Ester (PAE) Resin

Bio-based polyaspartic ester resin is a high-molecular material that combines environmental sustainability with strong performance and is gaining increasing attention in coatings, adhesives, and composite materials.

Core Concepts of Bio-Based Polyaspartic Ester Resin

1. Polyaspartic Ester

A special class of polyamine compounds formed by the polymerization of aspartate ester monomers.

As a key component of polyaspartic polyurea systems, it reacts with isocyanates to form high-performance coatings.

Advantages:

1. Excellent weatherability; UV resistance and anti-yellowing
2. High elasticity and adhesion
3. Adjustable curing speed
4. Low VOC; environmentally friendly

2. Bio-Based

Refers to raw materials derived from renewable biomass that replace conventional petroleum-based feedstocks.

Common bio-based feedstocks:

• Castor oil → used to synthesize bio-based polyols
• Lactic acid → used to prepare bio-based monomers
• Rosin → used to modify resins and enhance performance

Core Advantages of Bio-Based Polyaspartic Ester Resin

Key Application Areas of Bio-Based Polyaspartic Ester Resin

1. High-Performance, Environmentally Friendly Coatings

• Floor coatings: factories, parking garages (abrasion resistance, chemical resistance)
• Automotive coatings: clearcoat layer (UV resistance, high gloss)
• Wind-turbine blade coatings: for scenarios with very high weatherability requirements

2. Adhesives and Sealants

Used for bonding in construction and aerospace composites, as a replacement for epoxy resins.

3. 3D-Printing Materials

The photopolymerization characteristics of bio-based polyaspartic ester resins make them suitable for UV-curing 3D printing.

Technical Challenges and Solutions for Bio-Based Polyaspartic Ester Resin

Representative Companies and R&D Progress

• Covestro: Launched partially bio-based PAE resins for automotive coatings.
• Evonik: Developed PAE monomers based on castor oil.

Academic research:

• Cornell University (USA): Enhanced the thermal stability of PAE using lignin-derived materials.
• EU Horizon project: Developed 100% bio-based polyurea coatings.

Future Trends

1. Policy drivers: The EU REACH regulation and China’s “dual-carbon” goals are increasing the penetration of bio-based materials.
2. Circular economy: Combine with chemical recycling technologies to realize closed-loop use of resins.
3. Higher performance: Develop flame-retardant and self-healing bio-based PAE to meet advanced application needs.

Selection Recommendations for Bio-Based Polyaspartic Ester Resin

If you need to replace conventional petroleum-based polyurea/polyurethane systems, prioritize the following assessments:

• Bio-based content (ASTM D6866 certification)
• Curing speed and application window (to avoid conflicts with existing processes)
• Long-term weatherability data (accelerated aging test reports)

At present, the cost of bio-based polyaspartic ester resins remains higher than petroleum-based products. It is advisable to introduce them first in high-end markets (e.g., electric vehicles, luxury packaging) to balance cost and premium pricing.

Feiyang has been specializing in the production of raw materials for polyaspartic coatings for 30 years and can provide polyaspartic resins, hardeners and coating formulations.
Feel free to contact us: marketing@feiyang.com.cn
Our products list:

• Polyaspartic Resin
• Isocyanate Hardener
• Epoxy Hardener
• Special Chemical

Contact our technical team today to explore how Feiyang Protech’s advanced polyaspartic solutions can transform your coatings strategy. Contact our Tech Team