Patent ID: 8431642

Claim:
An adhesive composition comprising: (1) a polyolefin composition comprising at least about 50 mol % of a polypropylene, and (2) at least one wax, wherein the at least one wax comprises a linear polyethylene wax having a molecular weight equal to or greater than 3000; and (3) wherein the adhesive composition is free of tackifier; (A) wherein the polyolefin composition has: (a) a Dot T-Peel of 1 Newton or more on Kraft paper, (b) an Mw of 10,000 to 100,000, (c) a branching index (g′) of from 0.4 to 0.98 measured at the Mz of the polyolefin when the polyolefin has an Mw of 10,000 to 60,000, or a branching index (g′) of from 0.4 to 0.95 measured at the Mz of the polyolefin when the polyolefin has an Mw of 10,000 to 100,000; (B) wherein the at least one wax has a viscosity at 140° C. of between about 100 cp and about 10,000 cp and a wax softening point greater than 110° C. such that a set time function F is greater than 1 and less than 3, wherein F is calculated according to the following equation: F= 5.26−6.9×10 −5 *[wax viscosity at 140° C., (cp)]−0.021*[wax softening point, (° C.)] wherein the wax softening point is determined by at least one of: (a) mettler drop point as determined by ASTM-D3954-94; (b) congealing point as determined by ASTM D-938; (c) ring and ball softening point as determined by ASTM E-28; or (d) peak melt temperature as determined by DSC; and (C) wherein the adhesive composition has a set time greater than about 1 second and less than about 3 seconds as measured by Dot Set Time; and (D) wherein the adhesive composition has a fiber tear at 2° C. of about 20% or greater.