1 pvc impact modifiers DLA series is especially suitable for outdoor products 2 broadly used in PVC profiles, section, shee pvc Impact Modifier DLA series Product Description DLA series Impact Modifier is a Weatherable Acrylic pvc Impact Modifiers DLA series used in rigid PVC products. It is a core-shell structure modifier, with Acrylic Copolymer as core and graft metacrylic acid ester copolymer ...