Allnex MACRYNAL SM 636/70BAC is a high-performance solvent-borne hydroxyl acrylic resin under the MACRYNAL series, designed for 2K PU topcoat systems. It cross-links efficiently with polyisocyanates to formulate high-quality weather-resistant topcoats, featuring balanced performance of high hardness and excellent elasticity, outstanding light stability, and VOC < 420g/L
Excellent weather stability - Strong light stability, UV aging resistance, suitable for long-term outdoor use
Balanced rigidity & flexibility - High hardness for scratch resistance, combined with excellent elasticity to resist impact
Efficient cross-linking - Sufficient cross-linking with polyisocyanates forms dense coating with strong protection
Wide application adaptability - Compatible with various solvent-borne formulations, stable application performance
Industrial metal outdoor topcoat: Outdoor steel structures, communication towers, weather and corrosion resistant
Construction machinery protective topcoat: Enclosures of loaders, cranes, impact and wear resistant
Transportation equipment decorative topcoat: Rail transit components, highway guardrails, weather resistant and aesthetic
High-end hardware outdoor coating: Outdoor lighting, fitness equipment, resistant to harsh environment erosion
| Appearance | Pale yellow transparent liquid |
| Solid Content | 70 ± 2 % (by weight) |
| Hydroxyl Content (on solids) | 4.0 ± 0.3 % |
| Solvent System | BAC mixed solvent |
| Viscosity (23℃) | 800 - 1200 mPa·s |
| Acid Value (on solids) | ≤ 2.5 mg KOH/g |
| Density (23℃) | 0.98 ± 0.02 kg/L |
| Flash Point (Setaflash) | 33 ℃ |
| Glass Transition Temperature (Tg) | 38 ± 5 ℃ |
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E-mail: wangxingqiang@ericwchem.com
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