Adhesives for making multilayer films comprising liquid crystalline polymer and polypropylene

摘要

Multilayer films that include a thermotropic liquid crystalline polymer film layer and a polypropyene film layer are bound together using hot melt adhesives which may be either (1) a blend of poly( alpha -olefins), comprised of isotactic polypropylene, a polymer of a second lower poly( alpha -olefin), and a small amount of a higher poly( alpha -olefin), or (2) a blend of poly(propylene-graft-maleic anhydride) and a dimer acid based polyamide. These hot melt adhesives also act as compatiblizers for blends of polypropylene and thermotropic liquid crystalline polymers.