Acrylic Resin Thermoplastic For Automotive Refinish

  Primers are the foundation of a coating system, playing a crucial role in ensuring good adhesion, durability, and the desired surface finish of subsequent coatings. As the critical interface between the substrate and the topcoat, primers not only provide mechanical adhesion and chemical bonding but also enhance surface uniformity, corrosion resistance, and impact resistance. Their performance largely determines the overall quality and longevity of the coating system.

  Whether the system utilizes a UV primer or a PU primer, the choice of resin is crucial to achieving these goals. Acrylic resins are widely used due to the versatility of their molecular design, allowing them to be modified for fast UV curing or crosslinking with polyurethane systems. In UV primers, they ensure fast curing, high hardness, and excellent intercoat adhesion with UV topcoats; in PU primers, they provide toughness, flexibility, and strong substrate compatibility. Therefore, selecting the right acrylic resin is more than just a formulation decision; it is crucial to balancing efficiency, durability, and performance across diverse applications.

Product Description

  SA-537 is a thermoplastic solid acrylic resin composed of methyl methacrylate (MMA) and n-BMA polymers. Its combination of mechanical strength, chemical resistance, and surface properties makes it ideal for use in UV and PU primers. Acrylic Resin Thermoplastic SA-537's excellent alcohol resistance, high gloss, high hardness, and abrasion resistance ensure exceptional durability and appearance retention. Its strong adhesion, dispersibility, and weatherability enable reliable performance on a variety of substrates and in various environments. The resin's medium molecular weight (80,000) and relatively high glass transition temperature (70℃) contribute to improved film hardness and stability. SA-537's low acid value ensures good compatibility with other ingredients and reduces the risk of side reactions. Furthermore, its viscosity properties make it easy to formulate, making it particularly suitable for UV primers. Solid acrylic resin SA-537's toughness, adhesion, and long-term durability also make it an ideal choice for PU primers, plastic coatings, and automotive refinishes.

‌Key Features‌

• High alcohol resistance, high gloss, high hardness, and strong abrasion resistance
• Strong adhesion, good dispersibility, and good weather resistance

Recommended Applications‌

  Home appliance paint, plastic paint, car repair paint, especially suitable for UV primer

Physical Property

Solubility

Dissolution rate

  ***> Butanone > Ethyl acetate > Toluene > Butyl acetate > Xylene

Compatibility

  It has good solubility with alkyd resin, perchlorethylene resin, nitrocellulose, cellulose acetate butyrate, etc.

Packaging Details

  25kgs/Bag

Storage

This product should be stored in a dry, ventilated place to avoid moisture.