Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Allnex MACRYNAL SM 636/70BAC Hydroxy Acrylic Resin

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

Features Of Allnex MACRYNAL SM 636/70BAC Hydroxy Acrylic Resin

  1. Excellent weather stability - Strong light stability, UV aging resistance, suitable for long-term outdoor use

  2. Balanced rigidity & flexibility - High hardness for scratch resistance, combined with excellent elasticity to resist impact

  3. Efficient cross-linking - Sufficient cross-linking with polyisocyanates forms dense coating with strong protection

  4. Wide application adaptability - Compatible with various solvent-borne formulations, stable application performance


Typical Applications Of Allnex MACRYNAL SM 636/70BAC Hydroxy Acrylic Resin

  1. Industrial metal outdoor topcoat: Outdoor steel structures, communication towers, weather and corrosion resistant

  2. Construction machinery protective topcoat: Enclosures of loaders, cranes, impact and wear resistant

  3. Transportation equipment decorative topcoat: Rail transit components, highway guardrails, weather resistant and aesthetic

  4. High-end hardware outdoor coating: Outdoor lighting, fitness equipment, resistant to harsh environment erosion

Specifications Of Allnex MACRYNAL SM 636/70BAC Hydroxy Acrylic Resin

AppearancePale yellow transparent liquid
Solid Content70 ± 2 % (by weight)
Hydroxyl Content (on solids)4.0 ± 0.3 %
Solvent SystemBAC 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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