Patent ID: 8883132

Claim:
A composition comprising: (a) at least one polar modified polymer selected from the group consisting of (1) a polar modified polymer consisting essentially of C26-C28 units and modified with at least one maleic anhydride unit, and having a weight-average molecular weight of less than or equal to 30000 g/mol and a crystallinity of 8% to 60%; (2) a polar modified polymer consisting essentially of C2-C4 units and modified with at least one maleic anhydride unit, and having a weight-average molecular weight of less than or equal to 25 000g/mol and a melting point above 75° C., and mixtures thereof; (b) at least one tackifier, wherein the tackifier is a hydrocarbon resin; and (c) at least one block copolymer, wherein the at least one block copolymer comprises styrene and is an A-B polymer or an A-B-A polymer, where A represents a hard segment and B represents a soft segment, wherein the at least one tackifier and the at least one block copolymer form a pressure sensitive adhesive, and wherein the composition does not comprise a plasticizer.