er and mineral oils, paraffinic or napthenic process oils, and optionally a suitable tackifying resin including natural and modified resins; glycerol and pentaerythitol esters of natural and modified resins; polyterpene resins; copolymers and terpolymers of natural terpenes; phenolic modified terpene resins and the hydrogenated derivatives thereof; aliphatic petroleum resins and the hydrogenated d