Patent ID: 7459521

Claim:
A process for lowering the heat sealing temperature of a polyolefin-based thermoplastic, comprising the step of replacing at least a portion of the polyolefin in the thermoplastic with a branched polyolefin having a density of about 0.86 to about 0.93 g/mL, having three or more branches of the formula —(CH 2 CH 2 ) m H wherein m is an integer of one or more, provided that said branched polyolefin has one or both of the following properties: said branched polyolefin contains less than 2 methyl groups per 1000 methylene groups and at least 30 total branches per 1000 methylene groups; said branched polyolefin contains less than 0.3 branches of the formula —(CH 2 ) 5 H per 1000 methylene groups; and in said branched polyolefin the level hexyl+branches is at least 80% of the level of ethyl branches.