Aliphatic polyisocyanate (flexibilizing HDI trimer)-MT3800

Introduction

Aliphatic polyisocyanates based on hexamethylene diisocyanate (HDI) trimers are widely used in high-performance coatings due to their excellent durability, flexibility, and UV resistance. This article examines a flexibilizing HDI trimer variant (coded as MT3800 for reference) and its key properties through comparative data tables.

Table 1: General Properties of MT3800 vs Standard HDI Trimer

Table 2: Performance in Coating Formulations

Table 3: Recommended Formulation Guidelines

Table 4: Application Comparison

Key Advantages

1. Enhanced Flexibility: Superior elongation (>200%) vs conventional trimers (~150%)

2. Lower Cure Temperature: Enables energy-saving processing

3. Extended Open Time: Better workability for complex parts

Conclusion

This flexibilizing HDI trimer variant demonstrates significant improvements in coating performance, particularly for applications requiring:

• Extreme flexibility

• Outdoor durability

• Low-temperature curing