Basell Poliolefine Italia S.r.l.

Basell Polyolefine Gmbh

Letizia Baraldi

Giampaolo Pellegatti

Paolo Goberti

Michele Grazzi

Fabiana Fantinel

Kazuhiko Minowa

Yukihiro Hisanaga

Polyethylene composition with improved balance of mechanical and optical properties, comprising (all percentages being by weight):

Polyethylene composition having high mechanical properties

Polyolefin composition comprising, in percent by weight: A) 50-75% of a blend of polymers (PP) and (EC), wherein (PP) is selected from the group consisting of: (i) propylene homopolymers; (ii) copolymers of propylene; (iii) combinations of said homopolymers (i) and copolymers (ii); (EC) is a copolymer of ethylene and propylene or CH&#x2550;CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH&#x2550;CHR alpha-olefin(s), containing from 20 to 35%, of ethylene; and B) 25-50% of a copolymer (EC) of ethylene and propylene or CH&#x2550;CHR alpha-olefin(s), where R is a 2-8 carbon alkyl radical, or a copolymer of ethylene, propylene and the said CH&#x2550;CHR alpha-olefin(s), containing from 40 to 60% of ethylene; in which composition the copolymer component (EC) is present in amounts from 23 to 45% with respect to the total weight of (A), and the intrinsic viscosity [&#x3b7;] of the fraction XS soluble in xylene at room temperature, referred to the total weight of (A)+(B), is of 3.5 dl/g or more.

Heterophasic polyolefin compositions having improved tensile properties

A polyolefin composition comprising, in percent by weight: A) 10-25% of a propylene homopolymer or copolymer with up to 8% of comonomer(s); B) 75-90% of a copolymer of ethylene and (i) propylene or (ii) CH&#x2550;CHR alpha-olefins, where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with minor amounts of a diene, containing from 54 to 65% of ethylene; wherein the weight ratio B/XS of the content B of copolymer component (B) to the fraction XS soluble in xylene at room temperature, both referred to the total weight of (A)+(B), is of 1.50 or less.

Polyolefin compositions having low hardness and low gloss

A polyolefin composition comprising, in percent by weight: A) 20-35% of a propylene homopolymer or copolymer with up to 8% of comonomer(s); B) 65-80% of a copolymer of ethylene and (i) propylene or (ii) CH&#x2550;CHR alpha-olefins, where R is a 2-8 carbon alkyl radical, or (iii) a combination thereof, optionally with minor amounts of a diene, containing from 40 to less than 54% of ethylene; wherein the weight ratio B/XS of the content B of copolymer component (B) to the fraction XS soluble in xylene at room temperature, both referred to the total weight of (A)+(B), is of 1.25 or less.

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S. Bartolomeo in Bosco, Italy

Letizia Baraldi