Propylene impact copolymers having good optical properties

A fabricated article comprising:

• a propylene impact copolymer composition comprising:
• a matrix phase comprising 50 to 95 weight % of a polypropylene polymer comprising from 0 to 6 mole % of units derived from one or more alpha-olefins selected from the group consisting of ethylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-nonene, 1-decene, 1-undecene and 1-dodecene;
• and
• a dispersed copolymer phase comprising from 5 to 50 weight % of the total composition, the dispersed copolymer phase comprising:
• from 40 to 90 weight % of a first copolymer comprising 35 to 85 weight % of ethylene and 15 to 65 weight % of a first rubber comonomer comprising one or more C3-C12 α-olefin, and
• from 10 to 60 weight % of a second copolymer comprising 65 to 95 weight % of ethylene and 5 to 35 weight % of a second rubber comonomer comprising one or more C3-C12 α-olefin,
• wherein the weight percent of ethylene in the second copolymer is greater than the weight percent of ethylene in the first copolymer.

A fabricated article comprising:

• a propylene impact copolymer composition having;
• bloom resistance;
• a haze value less than about 25% on a 20 mil plaque as measured in accordance with ASTM D1003;
• a clarity value greater than about 95% on a 20 mil plaque as measured in accordance with ASTM D1003;
• a drop impact resistance value greater than about 100 in-lbs at −40° C. as measured in accordance with ASTM D5420-10 GE configuration;
• and
• a flexural modulus/stiffness value of greater than 110 kpsi as measured in accordance with ASTM D790 at 1% secant.

A process for making a propylene impact copolymer composition comprising a matrix phase and a dispersed phase in a sequential polymerization process, the process comprising:

• polymerizing the matrix phase comprising a propylene polymer comprising from 0 to 6 mol % of units derived from monomers selected from the group consisting of ethylene, C4-C12 alpha-olefins and combinations thereof;
• polymerizing a first copolymer of the dispersed phase in the presence of the matrix phase, the first copolymer comprising an ethylene content of less than 85% by weight;
• and
• polymerizing a second copolymer of the dispersed phase in the presence of the matrix phase, the second copolymer comprising an ethylene content of greater than 65% by weight,
• wherein the ethylene content of the second copolymer is greater than the ethylene content of the first copolymer.