Elvacite™ 4254 is a hydroxy-functional methacrylate copolymer resin used as an acrylic polyol in low-VOC, two-part polyurethane systems
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Elvacite™ 4254 is a low–molecular weight solid bean resin that typically functions as an acrylic polyol component of low-VOC, two-part polyurethane systems. When reacted with an isocyanate, the Elvacite™ 4254 copolymer forms polyurethane films with exceptional durability. Elvacite™ 4254 provides outstanding abrasion and UV resistance as well as better optical properties due to excellent gloss and water-white transparency. This resin offers a favorable balance of flexibility and hardness in many coating applications. Since it has a low molecular weight, it also enables high-solids, low-VOC formulations to be made. Elvacite™ 4254 can be used for creating protective topcoats and has low reactivity with pigments, making it ideal for formulating colored basecoats as well. The hydroxyl functionality of Elvacite™ 4254 makes it useful in reacting with other polymers to form other hybrid resin systems, such as polyester-acrylic or epoxy-acrylic systems.
Appearance: Solid bead
Glass transition temp, onset (°C): 51
Molecular weight (Da): 12,000
Acid number (mg KOH/g resin): 15.9
Hydroxyl number (mg KOH/g resin): 72
Primary Chemistry:
Methacrylate copolymer
High-VOCs in solvent-based coating systems from use of high-molecular weight resins Yellowing and discoloration from prolonged UV exposure Low scuff resistance and durability Poor color strength
Architectural coatings Automotive coatings Industrial coatings
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