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

Allnex MACRYNAL SM 515 70BAC Hydroxyl Acrylic Resin

Allnex MACRYNAL SM 515 70BAC is a hydroxyl-functional acrylic resin designed for high-performance two-component polyurethane coatings. It offers excellent gloss retention, weather resistance, and compatibility with isocyanates. Supplied as a 70% solids solution in butyl acetate, it enables low-VOC formulations while delivering superior hardness, flexibility, and chemical resistance—ideal for automotive refinish and industrial topcoats.
  • allnex macrynal sm 515 70bac hydroxyl acrylic resin_9eb435c7
  • allnex macrynal sm 515 70bac hydroxyl acrylic resin_9eb435c7

Features Of Allnex MACRYNAL SM 515 70BAC Hydroxyl Acrylic Resin

  1. High hydroxyl functionality for excellent crosslinking efficiency with melamine and polyisocyanate curing agents.

  2. Low VOC formulation compliant with stringent environmental regulations including EU Directive 2004/42/EC.

  3. Superior gloss retention and long-term weatherability in outdoor coatings applications.

  4. Excellent compatibility with common solvent-based acrylic and alkyd resin systems.

  5. Consistent batch-to-batch reproducibility ensuring reliable manufacturing performance.

Typical Applications Of Allnex MACRYNAL SM 515 70BAC Hydroxyl Acrylic Resin

  1. Automotive OEM clearcoats and topcoats.

  2. Industrial maintenance coatings for metal substrates.

  3. General-purpose coil coatings requiring high durability and flexibility.

  4. High-performance wood finishes for furniture and cabinetry.

  5. Powder coating hybrid systems where solution acrylics enhance flow and leveling.

Specifications Of Allnex MACRYNAL SM 515 70BAC Hydroxyl Acrylic Resin

Chemical TypeHydroxyl-functional acrylic copolymer
Product FormLiquid resin solution
AppearanceClear, pale yellow liquid
Solvent SystemAromatic-free (acetone/butyl acetate blend)
Hydroxyl Value (mg KOH/g)70–75
Acid Value (mg KOH/g)< 5
Non-Volatile Content (% w/w)70 ± 1
Viscosity (25°C, mPa·s)800–1200 (DIN 4 mm cup)


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