| CPC C08F 4/16 (2013.01) [C08F 4/12 (2013.01)] | 5 Claims |
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1. An olefin-based polymer having an envelope E2 calculated by the following Formula (3) in a range of 0.820 to 0.885:
E2=LE2/LS2 (3)
wherein LE2 is a convex hull perimeter of the olefin-based polymer obtained from an image of the olefin-based polymer captured with a scanning electron microscope, and
LS2 is an actual perimeter of the olefin-based polymer obtained from the image of the olefin-based polymer captured with the scanning electron microscope;
wherein the olefin-based polymer is selected from a group consisting of propylene homopolymer, 1-butene homopolymer, 1-pentene homopolymer, 1-hexene homopolymer, ethylene-propylene copolymer, propylene-1-butene copolymer, propylene-1-hexene copolymer, ethylene-propylene-1-butene copolymer, ethylene-propylene-1-hexene copolymer, and a polymer obtained by multi-step polymerization of these polymers,
wherein the particle diameter of the olefin-based polymer is 100 to 3000 μm.
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