Abstract:
Use of propylene polymers having Polydispersity Index value P.I.(2) greater than or equal to 15 for the nucleation of polypropylene resins having a Polydispersity Index value P.I.(1) fulfilling the equation P.I.(2)-P.I.(1) ≥ 10.
Abstract:
Random propylene/ethylene copolymers are provided characterized by Ethylene content in the range of 4.5-7%wt; Mw/Mn (via GPC) in the range 3.5-5.5; Mz/Mw (via GPC) lower than 4; absence of 2-1 regioinversion, and Melting Temperature (Tm) (non-nucleated grade) lower than 143°C. The said copolymers show an excellent balance of impact and optical properties which is retained even after visbreaking.
Abstract:
A fibre for thermal bonding comprising copolymers of propylene and 1-pentene, the amount of 1- pentene derived units being from 0.1% to 20% wt. Said copolymers possess a value of melt flow rate (MFR) ranging from 0.1 to 100 g /10 min.
Abstract:
A very transparent moulded article comprising a propylene copolymer which comprises hexene-1 as comonomer and a clarifying agent, said propylene copolymer characterized by: a) a content of hexene-1 ranging from 1.5 to 6 %wt with respect to the total weight of the copolymer; b) an MFR value according to ISO 1133 ranging from 15 to 45 g/ 10 min; c) a Xylene Soluble Fraction ranging from 1 to 4 %wt with respect to the total weight of the copolymer.
Abstract:
Mono-oriented film having a shrink rate at 100°C of at least 15% and at least one layer of which comprises a propylene copolymer with ethylene and optionally other olefins of formula CH2=CHR in which R is an alkyl group containing from 2 to 10 carbon atoms, having at least 5.5% wt of ethylene, a melt flow rate according to ISO 1133 (230°C, 2.16 Kg) of less than 10, and a fraction of polymer soluble in xylene at 25°C ranging from 14 to 30% weight based o the total weight of said copolymer. The said films are particularly suited for the manufacturing of shrink labels.
Abstract:
Articles, particularly pressure pipes, having high strength as well as high stiffness and very good impact resistance even at low temperatures can be obtained by using a heterophasic polyolefϊn composition comprising (percent by weight) 70-90% of a random copolymer of propylene with 0.5-6% of 1-hexene, and 10-30% of a polymer of ethylene with a C 3 -C 10 α- olefϊn and optionally a diene, wherein the polymer of ethylene has an ethylene content higher than 45% and an intrinsic viscosity [η] value from 3 to 5 dl/g. A particular advantage of the present invention is that articles comprising the above heterophasic polyolefϊn composition show a low ductile to brittle transition temperature (DBTT).
Abstract:
A polyolefin composition having good transparency and mechanical properties comprising, all percent amounts being by weight: A) from 70 to 98% of a propylene homopolymer or copolymer having haze of 25% or less and melting temperature of 130°C or higher; and B) from 2 to 30% of a butene-1 copolymer containing from 0.5 to 30% of one or more comonomer(s).
Abstract:
A propylene polymer composition having a Flexural modulus lower than 500MPa, a total ethylene content from 9 to 30% by weight, a xylene soluble fraction at room temperature higher than 25% by weight, a melting temperature measured by DSC (Tm°C) from 130 to 150°C and a ratio between the weight of xylene soluble fraction at 25°C and the hexane soluble fraction determined on plaque (100μm) of higher than 4.
Abstract:
A propylene polymer composition comprising (weight percentages being referred to the sum of A+B): A propylene polymer composition comprising (weight percentages being referred to the sum of A+B): (A) 60-90% by weight of a copolymer of propylene with ethylene containing less than 2.5%wt of ethylene units; and (B) 10-40% by weight of a copolymer of propylene comprising from 15 to 35%wt of ethylene units, said polymer composition having a melt flow rate value according to ISO 1133 (230°C, 2.16 Kg) of less than 10 g/10min.
Abstract:
A container comprising a polyolefin composition comprising: A) from 59 wt% to 84 wt%, of a propylene homopolymer having isotactic pentads (mmmm) measured with by 13 C-NMR higher than 96%, B) from 16 wt% to 41 wt%, of a copolymer of propylene and ethylene with from 30wt% to 44wt%, of ethylene derived units; the sum A) + B) being 100; the composition having an MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) comprised from 72 to 100 g/10 min.