Pipes and Polyolefin Composition For the Manufacture Thereof
AssigneeBasell Poliolefine Italia S.r.l.
InventorsMonica Galvan, Claudio Cavalieri, Francesca Tisi, Tiziana Caputo
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Abstract
A heterophasic polypropylene composition comprising (percent by weight referred to the sum of components A) and B)): A) from 80% to 97% of a random copolymer of propylene containing from 0.1 to 4% of 1-hexene derived units; B) from 3-20% of a copolymer of propylene and ethylene having a content of ethylene derived units ranging from 50% to 55% extremes excluded; wherein the heterophasic polypropylene composition is endowed with a Melt Flow Rate: measured according to ISO 1133 (230° C., 5 Kg) ranging from 0.5 to 5 g/10 min; and an intrinsic viscosity (IV) of the fraction soluble in xylene at room temperature ranging from 2.5 to 5.5;
Claims9
A heterophasic polypropylene composition comprising (percent by weight referred to the sum of components A) and B)):
- A) from 80% to 97% of a random copolymer of propylene containing from 0.1 to 4 of 1-hexene derived units;
- said random copolymers of propylene having:
- a Melt Flow Rate:
- measured according to ISO 1133 (230° C., 5 Kg) ranging from 0.3 to 5 g/10 min;
- a polydispersity index (PI) ranging from 4 to 10;
- and
- B) from 3-20% of a copolymer of propylene and ethylene having a content of ethylene derived units ranging from 50% to 55% extremes excluded;
- wherein the heterophasic polypropylene composition has a Melt Flow Rate measured according to ISO 1133 (230° C., 5 Kg) ranging from 0.5 to 5 g/10 min and an intrinsic viscosity (IV) of the fraction soluble in xylene at room temperature ranging from 2.0% to 5.0%.
Dependencies are inferred from the claim text.