the present invention relates to pressure sensitive adhesive compositions prepared from novel anionic block copolymers of aromatic vinyl compounds and conjugated dienes . the block copolymers are a mixture of a high molecular weight linear and / or radial block copolymer component , and a diblock copolymer component . the block copolymer may be combined with other block copolymers , tackifying resins , oils and other components to form the adhesives of the present invention . the pressure sensitive adhesives of the present invention maintain their performance at elevated temperatures and fail cohesively making them particularly useful for die - cuttable label applications . the pressure sensitive adhesives compositions may also comprise ester plasticizers typically used for pvc and thus make adhesives particularly suitable for pvc film labels and decals .