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

Allnex MACRYNAL SM 2855 70BAC Hydroxyl Acrylic Resin

Allnex MACRYNAL SM 2855 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. Ideal for automotive refinish and industrial topcoats requiring durability, clarity, and fast cure. Supplied as a 70% solids solution in butyl acetate.
  • allnex macrynal sm 2855 70bac hydroxyl acrylic resin_1f654a7c
  • allnex macrynal sm 2855 70bac hydroxyl acrylic resin_1f654a7c

Features Of Allnex MACRYNAL SM 2855 70BAC Hydroxyl Acrylic Resin

  1. High hydroxyl functionality for excellent crosslink density with melamine and polyisocyanate curing agents.

  2. Optimized molecular weight distribution for balanced flow, leveling, and film hardness development.

  3. Low VOC formulation compliant with stringent environmental regulations (≤70 g/L VOC in typical baked coatings).

  4. Superior weather resistance and UV stability, supporting long-term gloss retention and color stability.

  5. Good compatibility with common acrylics, alkyds, and cellulose esters in multi-resin coating systems.

Typical Applications Of Allnex MACRYNAL SM 2855 70BAC Hydroxyl Acrylic Resin

  1. Automotive OEM topcoats and clearcoats requiring high durability and appearance.

  2. Industrial maintenance coatings for metal substrates including agricultural and construction equipment.

  3. Appliance coatings for refrigerators, ovens, and laundry units requiring bake performance and chip resistance.

  4. General-purpose coil coatings where corrosion resistance and formability are critical.

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

Specifications Of Allnex MACRYNAL SM 2855 70BAC Hydroxyl Acrylic Resin

Chemical TypeHydroxyl-functional acrylic copolymer
Product FormLiquid resin solution
AppearanceClear, pale yellow liquid
Solvent System70% Butyl acetate (BAC), balance proprietary solvents
Hydroxyl Value (mg KOH/g)120–135
Acid Value (mg KOH/g)<5
Non-Volatile Content (% w/w)70 ± 1
Viscosity (DIN 4, 23°C, mPa·s)800–1200


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