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

Allnex MACRYNAL SM 518 55LG Hydroxyl Acrylic Resin

Allnex MACRYNAL SM 518 55LG is a hydroxyl-functional acrylic resin designed for high-performance two-component polyurethane coatings. It delivers excellent gloss retention, weather resistance, and compatibility with isocyanates. Ideal for automotive refinish and industrial topcoats, this low-viscosity, solvent-based resin ensures smooth application and rapid cure. Part of Allnex’s trusted MACRYNAL® portfolio, it balances reactivity, durability, and formulation flexibility.
  • allnex macrynal sm 518 55lg hydroxyl acrylic resin_1b0c7617
  • allnex macrynal sm 518 55lg hydroxyl acrylic resin_1b0c7617

Features Of Allnex MACRYNAL SM 518 55LG Hydroxyl Acrylic Resin

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

  2. Low VOC formulation suitable for compliant industrial coating systems requiring reduced solvent emissions.

  3. Outstanding gloss retention and UV resistance in outdoor-cured and baked finishes.

  4. Good compatibility with common acrylic, polyester, and alkyd resins in hybrid binder systems.

  5. Consistent batch-to-batch reproducibility ensuring reliable performance in high-volume production.

Typical Applications Of Allnex MACRYNAL SM 518 55LG Hydroxyl Acrylic Resin

  1. Automotive OEM topcoats and clearcoats.

  2. Industrial maintenance coatings for metal substrates.

  3. General-purpose coil coatings requiring durable film formation.

  4. High-performance appliance finishes (refrigerators, washing machines).

  5. Plastic coatings for automotive interior trim and exterior components.

Specifications Of Allnex MACRYNAL SM 518 55LG Hydroxyl Acrylic Resin

Chemical TypeHydroxyl-functional acrylic copolymer
Product FormLiquid resin solution
AppearanceClear to slightly hazy, pale yellow liquid
Solvent SystemAromatic hydrocarbons and esters
Solids Content (wt%)55 ± 2%
Hydroxyl Value (mg KOH/g)70–80
Acid Value (mg KOH/g)< 5
Viscosity (25°C, mPa·s)1,200–1,800


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