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| New DuPont Vamac MR A new grade of DuPont Vamac ethylene acrylic elastomer - Vamac MR - delivers multiple benefits as an impact modifier for adhesives, coatings and other thermoset resin systems. Vamac MR can improve impact resistance, flexibility at low temperatures and high-temperature resistance in applications such as cyanoacrylate adhesives, phenolic resin modification and flexible epoxy circuit board coatings. The new modifier is thermally stable up to 280șC. It is an amorphous polymer with a sub-zero glass transition temperature, resulting in good low-temperature flexibility. Unlike other Vamac grades, Vamac MR has no added chemicals, which can impact adhesive performance. Vamac MR also has high polarity, making for excellent compatibility with polar resins. It is readily soluble in toluene, MEK, acetone and other solvents commonly used in adhesive and coating systems. write your comments about the article :: © 2006 Construction News :: home page |