| 主权项 |
1. A soft-touch feel polymeric composition comprising a blend of:
i. at least about 20 weight percent and less than about 55 weight percent of a first polymeric component including a relatively hard thermoplastic, wherein the first polymeric component is an isotactic polypropylene homopolymer, a random polypropylene copolymer, an impact polypropylene, a high density polyethylene, a low density polyethylene, a linear low density polyethylene, a medium density polyethylene, or any combination thereof, having a crystaiiinity of greater than about 31 weight percent as measured according to ASTM D3418.03; ii. greater than about 25 weight percent and less than about 60 weight percent of a second polymeric component including a relatively soft thermoplastic as compared with the first polymeric component, wherein the relatively soft thermoplastic is a lower-α-olefin/α-olefin interpolymer (“LAO/α-olefin interpolymer”) which is a multiblock copolymer having one or more hard blocks and one or more soft blocks, wherein the one or more hard blocks are A Blocks and the one or more soft blocks are B blocks, the multiblock copolymer having the structure of (AB)n, (AB)nA, or B(AB)n, where n is greater than 1; the LAO/α-olefin has a density of 0.860 to 0.900 g/cm3; the LAO/α-olefin interpolymer includes a first monomer that is ethylene or propylene, and a second monomer that is butene or octene, wherein the concentration of the second monomer is greater than 6 mole percent and less than 30 mole percent, based on the total moles of monomer in the LAO/α-olefin interpolymer; the total amount of the first and second monomer is greater than about 95 weight percent, based on the total weight of the LAO/α-olefin interpolymer; the concentration of the B Blocks is about 50 to about 90 weight percent, based on the total weight of the LAO/α-olefin interpolymer; the concentration of the first monomer in the A Blocks is greater than about 95 weight percent, and the concentration of the second monomer in the B Blocks is greater than about 8 weight percent; iii. less than 40 weight percent glass fibers, based on the total weight of the polymeric composition, wherein the glass fibers have an average length from about 0.5 to about 5 mm in the composition, and a diameter from about 3 to about 100 microns; and iv. less than 5 weight percent of a grafted polypropylene; and wherein the LAO/α-olefin interpolymer has a melt index greater than about 0.2 and less than about 20, as measured according to ASTM D1238 Condition 190° C./2.16 kg when the first monomer is ethylene and ASTM D1238 Condition 230° C./2.16 kg when the first monomer is propylene. |
