HOT MELT ADHESIVE COMPOSITION HAVING IMPROVED STABILITY

摘要

An adhesive composition which includes a block copolymer of a mono alkenyl arene and a conjugated diene, and a plasticizer is provided. The block copolymer is at least one unsaturated block copolymer having a mono alkenyl arene content of equal to or greater than 60 weight percent and a modulus of less than 125,000 psi. The plasticizer is an aromatic ester or a liquid aromatic resin. The adhesive formed from the adhesive composition is characterized by having improved hot aging stability over adhesives based on prior block copolymers containing a conjugated diene elastomeric block.