Kowa Chemicals - Kowa American Corporation Reliable and High Quality Specialty Chemical Materials. KOWA American Corporation offers a broad portfolio of specialty acrylate, methacrylate, acrylamide, anhydride monomers, HDI … Reliable and High Quality Specialty Chemical Materials. KOWA American Corporation offers a broad portfolio of specialty acrylate, methacrylate, acrylamide, anhydride monomers, HDI …