PARALOID KM-370 is an acrylic impact modifier powder with a core shell structure based on a cross-linked butyl acrylate core with a methyl methacrylate shell. This produces a free flowing white powder with narrow particle size distribution. PARALOID KM-370 shows excellent weathering properties and impact efficiency compared to standard grades. It promotes fusion of formulations to a greater or lesser extent depending on the type used in advanced material applications. PARALOID KM-370 has a mid-range fusion property beneficial for advanced material processing. Its very uniform powder with narrow particle size distribution improves flow characteristics for precise material development. The product ensures highest weather resistance and targeted rheological properties crucial for performance of advanced materials in outdoor applications.