Patent ID: 8222339
Filing Date: 2012-07-17
Classification: C08F,C08L,C09J,Y10T

Abstract:
1. An adhesive composition comprising: (i) about 10 wt % to about 40 wt %, based on total weight of the adhesive composition, of at least one ethylene/α-olefin block copolymer, wherein the ethylene/α-olefin block copolymer comprises greater than 50 mol % ethylene based on total weight of the copolymer and: wherein the CRYSTAF peak is determined using at least 5 percent of the cumulative polymer, and if less than 5 percent of the polymer has an identifiable CRYSTAF peak, then the CRYSTAF temperature is 30° C.; or (ii) about 30 wt % to about 70 wt %, based on total weight of the adhesive composition, of at least one tackifier; and, (iii) about 10 wt % to about 30 wt %, based on total weight of the adhesive composition, of an oil or a low molecular weight polymer, wherein the tackifier to ethylene/α-olefin block copolymer weight ratio is in the range of from 3.2:1 to 10:1; and the oil or low molecular weight polymer to ethylene/α-olefin block copolymer weight ratio is an amount in the range of from 1.2:1 to 3.0:1.