A pressure sensitive adhesive article is described comprising a pressure sensitive adhesive in contact with the release layer. The release layer comprises a thermoplastic polymer and a block copolymer additive having the general structure: A[LB]n wherein A is a polyorganosiloxane block, L is a covalent bond or a divalent linking group B is independently a C16-C70 alkyl group, and n is at least 1. In other embodiments, compositions are described comprising a thermoplastic polymer the described block copolymer additive; as well as methods of making a release composition.