Polyolefin and composition for pipe systems and sheets
AssigneeBasell Poliolefine Italia S.r.l.
InventorsClaudio Cavalieri, Monica Galvan, Francesca Tisi
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Abstract
A polyolefin composition comprising (percent by weight): A) from 7% to 19%; of a copolymer of propylene and 1-hexene wherein said copolymer contains less than 1% of recurring units derived from hexene-1; B) from 81% to 93% of a heterophasic polypropylene composition comprising: B1) from 86% to 95% of a propylene homopolymer, said propylene polymer being insoluble in xylene at room temperature in an amount over 85% having a polydispersity Index ranging from 3 to 10; and a Melt Index from 0.5 to 10 dg/min; B2) from 5% to 14% of a copolymer of ethylene and propylene having an ethylene derived units content ranging from 50% to 65%; said polymeric composition having a Melt Index from 0.05 to 10 dg/min.
Claims7
A polyolefin composition comprising (percent by weight):
- A) from 7% to 19%;
- of a copolymer of propylene and 1-hexene wherein said copolymer contains less than 1% of recurring units derived from 1-hexene;
- and
- B) from 81% to 93% of a heterophasic polypropylene composition comprising:
- B1) from 86% to 95% of a propylene homopolymer, said propylene polymer being insoluble in xylene at room temperature in an amount over 85% having a polydispersity Index ranging from 3 to 10;
- and a Melt Index from 0.5 to 10 dg/min;
- and
- B2) from 5% to 14% of a copolymer of ethylene and propylene having an ethylene derived units content ranging from 50% to 65%;
- said polymeric composition having a Melt Index (MFR ISO method 1133) from 0.05 to 10 dg/min.
Dependencies are inferred from the claim text.