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US 2010/0305276 A1Published application
Tsoft and flexible polyolefin compositions
AssigneeBasell Poliolefine Italia S.r.l.
InventorsGiampaolo Pellegatti, Paolo Goberti
Life of this patent
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Abstract
A polyolefin composition having unusually low values of flexural modulus and shore hardness and comprising, in percent by weight: A) 15-40% of a copolymer of propylene with hexene-1 containing from 2.5 to 10% of hexene-1 and having Melt Flow Rate (MFR, measured according to ISO 1133, 230° C./2.16 Kg) from 0.5 to 100 g/10 min.; and B) 60-85% of an ethylene copolymer containing ethylene in a quantity equal to or lower than 40%, and having solubility in xylene at room temperature greater than 70%.
Claims7
A polyolefin composition comprising the following components, all percent amounts being by weight:
- A) 15-40% of a copolymer of propylene with hexene-1 containing from 2.5 to 10% of hexene-1 and having a melt flow rate (measured according to ISO 1133, 230° C./2.16 Kg) from 0.5 to 100 g/10 min.;
- and
- B) 60-85% of a copolymer of ethylene with propylene or a CH2═CHR α-olefin, where R is a C2-C8, alkyl radical, and optionally minor quantities of a diene, or a copolymer of ethylene with propylene and said α-olefin, and optionally minor quantities of a diene, said copolymers containing ethylene in a quantity equal to or lower than 40%, and having a solubility in xylene at room temperature greater than 70%.
Dependencies are inferred from the claim text.