Modified resins for blown film
AssigneeFina Technology, Inc.
InventorsRodolfo Mier, Mark Miller
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Abstract
Processes for enhancing blown film processability and the blown films formed thereby are described herein. One embodiment of the processes generally includes providing a first propylene based heterophasic copolymer having a first melt flow rate, modifying the first propylene based heterophasic copolymer to form a second heterophasic polymer having a second melt flow rate, wherein the second melt flow rate is greater than the first melt flow rate, contacting the first heterophasic polymer, the second heterophasic copolymer or a combination thereof with a plurality of additives, wherein the plurality of additives include a nucleator, polyethylene and mineral oil to form a modified heterophasic copolymer and blowing the modified heterophasic polymer into a film.
Claims16
A process for enhancing blown film processability comprising:
- providing a first propylene based heterophasic copolymer comprising a first melt flow rate;
- modifying the first propylene based heterophasic copolymer to form a second heterophasic polymer comprising a second melt flow rate, wherein the second melt flow rate is greater than the first melt flow rate;
- contacting 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, polyethylene and mineral oil to form a modified heterophasic copolymer;
- and
- blowing the modified heterophasic polymer into a film.
A process for enhancing blown film processability comprising:
- providing a first propylene based heterophasic copolymer comprising a first melt flow rate;
- modifying the first propylene based heterophasic copolymer to form a second heterophasic polymer comprising a second melt flow rate, wherein the second melt flow rate is greater than the first melt flow rate;
- contacting 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, polyethylene and mineral oil to form a modified heterophasic copolymer;
- and
- blowing the second heterophasic polymer into a film.
A process for enhancing blown film processability comprising:
- providing a propylene based heterophasic copolymer, wherein the propylene based heterophasic copolymer comprises a melt flow rate of at least about 1.0;
- contacting the propylene based heterophasic polymer with a polyethylene;
- and
- blowing the propylene based heterophasic polymer into a film.
Dependencies are inferred from the claim text.