PARALOID™ BTA-751U Impact Modifier is an MBS polymer with a core-shell structure. Its high level butadiene core is well suited for low temperature toughening. PARALOID™ BTA-751U Impact Modifier, can be used as an impact modifier in opaque PVC formulations, as well as CPVC formulations. Such systems may be extruded, such as conduit, pipe, or sheet, calendered, such as sheet or film, or injection-molded, such as fittings, electrical boxes and other objects. It is for opaque applications, but is not inherently weatherable for outdoor applications. Additionally, PARALOID™ BTA-751U Impact Modifier may be used as a toughener for epoxy or acrylate-based thermoset formulations