Multilayer coextruded plastics roofing sheets with an upper layer of poly(acrylonitrile-styrene-acrylate)

摘要

Multilayer coextruded plastics sheets for producing roofing elements for roofs or infills or the like, characterised in that the upper layer thereof, or layer facing towards the outside of the roofing element, is composed of poly(acrylonitrile-styrene-acrylate), also known as ASA (acrylonitrile-styrene-acrylate polymer).