Plasticized polypropylene thermoplastics

A plasticized polypropylene thermoplastic composition comprising a blend of:

• A) from 50 to 99.9 wt % of a thermoplastic polymer derived from amorphous polypropylene, optionally with one or more copolymerizable monomer selected from C2-C10 α-olefin or diolefin, said thermoplastic polymer having a melt flow rate (MFR) (ASTM D1238) of from 0.5 to 1000 and a crystallinity by differential scanning calorimetry of from 0 to less than 5%;
• B) from 0.1 to 50 wt % of at least one ethylene copolymer having a weight-average molecular weight (Mw) (GPC) of from 500 to 10,000, a molecular weight distribution (MWD) (GPC) of from greater than 1.5 to less than or equal to 3.5, and a comonomer content of from greater than or equal to 20 mol % to less than 70 mol %;
• and optionally,
• C) from 0 to 20 wt % of a thermoplastic polypropylene modifier compound other than that of B).

A plasticized polypropylene thermoplastic composition comprising:

• a blend of a thermoplastic polymer and an ethylene copolymer, wherein the thermoplastic polymer derived from isotactic polypropylene, optionally with one or more copolymerizable monomers selected from C2-C10 α-olefin or diolefin, said polymer having a melt flow rate (MFR) (ASTM D1238) of from 0.3 to 1000 dg/min.;
• wherein the ethylene copolymer has a weight-average molecular weight (Mw) GPC) of from 500 to 10,000, a molecular weight distribution (MWD) (GPC) of from greater than 1.5 to less than or equal to 3.5, and a comonomer content of from greater than or equal to 20 mol % to less than 33 mol %, wherein said ethylene copolymer is an ethylene-propylene, ethylene-butene, or ethylene-hexene copolymer;
• and
• wherein the wt % of said ethylene copolymer in the thermoplastic composition is less than or equal to y, wherein y is in the range of 0.1 to 50, as determined by y in the equation
• y=50−0.5x
• where x=the crystallinity of said thermoplastic polymer.

A plasticized polypropylene thermoplastic composition comprising:

• a blend of a thermoplastic polymer and an ethylene copolymer, wherein the thermoplastic polymer derived from isotactic polypropylene, optionally with one or more copolymerizable monomers selected from C2-C10 α-olefin or diolefin, said polymer having a melt flow rate (MFR) (ASTM D1238) of from 0.3 to 1000 dg/min.;
• wherein the ethylene copolymer has a weight-average molecular weight (Mw) GPC) of from 500 to 10,000, a molecular weight distribution (MWD) (GPC) of from greater than 1.5 to less than or equal to 3.5, and a comonomer content of from greater than or equal to 20 mol % to less than 33 mol %, wherein said ethylene copolymer is an ethylene-propylene, ethylene-butene, or ethylene-hexene copolymer;
• and
• wherein the wt % of said ethylene copolymer in the thermoplastic composition is less than or equal to y, wherein y is in the range of 0.1 to 50, as determined by y in the equation
• y=50−0.5x
• where x=the crystallinity of said thermoplastic polymer, and wherein said ethylene copolymer has less than or equal to 5% ethylene crystallinity by differential scanning calorimetry.