Patent ID: RE39307

Claim:
A pressure sensitive hot melt adhesive composition comprising from about 70% to about 90% amorphous polyalphaolefin and from about 10% to about 30% crystalline polypropylene having a degree of crystallinity of at least about 40%, said the amorphous polyalphaolefin comprising a butene- 1 terpolymer with ethylene and propylene copolymer and having a number - average molecular weight between about 5 , 000 and about 30 , 000 and a weight - average molecular weight between about 20 , 000 and about 60 , 000 , the crystalline polypropylene having a number - average molecular weight between about 10 , 000 and about 100 , 000 and a weight - average molecular weight between about 20 , 000 and about 300 , 000 , and wherein the adhesive composition has a melt index between about 200 and about 2000 grams per 10 minutes as determined by ASTM D 1238 .