Propylene-Based Blend Compositions

A hot melt adhesive composition comprising a polymer blend composition, comprising:

• a major polymer fraction comprising propylene derived units and at least one other comonomer derived units, the major polymer fraction having a Mw of about 100,000 to about 300,000 and a melt flow rate of about 0.1 g/10 min to about 70.0 g/10 min, according to ASTM D1238;
• and a minor polymer fraction comprising propylene derived units and at least one other comonomer derived units, the minor polymer fraction having a Mw of about 5,000 to about 60,000 and a Brookfield viscosity of about 500 cP to about 50,000 cP, according to ASTM D-3236 (190° C.), wherein an amount of the at least one other polyolefin comonomer in the minor polymer fraction is at least 7 wt % less than an amount of the at least one other polyolefin comonomer in the major polymer fraction.

A process for making a polymer blend composition, comprising:

• combining a major polymer fraction comprising propylene derived units and at least one other comonomer derived units with a minor polymer fraction comprising propylene derived units and at least one other comonomer derived units to form a polymer blend composition, the major polymer fraction having a Mw of about 100,000 to about 300,000 and a MFR of about 0.1 g/10 min to about 70.0 g/10 min, according to ASTM D1238, and the minor polymer fraction having a Mw of about 5,000 to about 60,000 and a Brookfield viscosity of about 500 cP to about 50,000 cP, according to ASTM D-3236 (190° C.), wherein an amount of the at least one other comonomer derived units in the minor polymer fraction is at least 7 wt % less than an amount of the at least one other comonomer derived units in the major polymer fraction.