Elvacite® 2669 is a water-soluble methacrylate copolymer acrylic resin used as a binder and film former in coatings and inks where low VOCs are desired.
Elvacite® 2669 is a solid-bead methacrylate copolymer acrylic resin with a high acid number and medium molecular weight. The polymer’s high acid number makes it soluble in slightly alkaline aqueous solutions. Accordingly, Elvacite® 2669 is an ideal film-forming resin for low-VOC ink and coating formulations or formulations applied to solvent-sensitive substrates.
Films formed with the Elvacite® 2669 acrylic resin exhibit excellent adhesion to a variety of substrates, including plastic and metal. These films are also highly abrasion resistant and have good UV resistance.
However, Elvacite® 2669 forms water-reducible films due to its water solubility. Thus, this acrylic resin is best suited for applications where temporary coating and ink systems are desired. If a more permanent coating or ink is needed, Elvacite® 2669 can be formulated with zinc oxide to improve water resistance and enhance durability.
Appearance: Solid beads
Specific gravity at 25°C: 1.2
Glass transition temp, onset (°C): 101
Molecular weight (g/mol): 22,000
Inherent viscosity (cPs): 0.285–0.350
Brookfield viscosity at 30% in PGM (cPs): 500–900
Moisture, max (%): 2.20
Methacrylic acid (%): 19.0–22.0
Primary Chemistry: Methyl methacrylate copolymer
Can be dissolved in slightly alkaline aqueous solutions
Forms films with high abrasion resistance
Provides excellent viscosity control
Soluble in high-pH systems
Using acrylic resins that do not have compatibility with water-based solutions
Damage to sensitive surfaces caused by solvents used in coatings
Water insolubility of acrylic coatings or inks
Poor abrasion resistance or durability in coating or ink applications
Printing inks
Plastic coatings
Metal coatings
Temporary coatings
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