Patent ID: 8106123
Filing Date: 2012-01-31
Classification: C08J,C08L

Abstract:
1. A process for enhancing blown film processability comprising: providing a first propylene based heterophasic copolymer comprising a first melt flow rate; contacting the first propylene based heterophasic copolymer with a second heterophasic copolymer comprising a second melt flow rate to form a combined heterophasic copolymer, wherein the second melt flow rate is greater than the first melt flow rate; modifying the first heterophasic polymer, the second heterophasic copolymer or a combination thereof with a plurality of additives, wherein the plurality of additives comprise a nucleator and mineral oil to form a modified heterophasic copolymer; modifying the first heterophasic polymer, the second heterophasic copolymer or a combination thereof with polyethylene, wherein the polyethylene is metallocene-based and wherein the polyethylene is used in concentrations of from about 2 wt. % to about 4 wt. % by weight of the combined heterophasic copolymer; and blowing the combined heterophasic copolymer into a film.