| abstract |
Insulation assemblies for the HVAC industry are bonded by spray application of a hot melt adhesive composition comprising 10 to 50 percent of an isostactic thermoplastic polybutene-1/ethylene copolymer containing from about 5.5 to about 10% by weight ethylene; 20 to 50 percent of a tackifier; 15 to 50 percent of an amorphous diluent having a softening point greater than 90 DEG C.; 0 to 2 percent antioxidant; and 0 to 5 percent wax. |