Abstract:
A multilayer film comprising at least one core layer comprising a polypropylene composition comprising: A) from 95 wt% to 60 wt%; of a propylene homopolymer having a fraction insoluble in xylene at 25 °C greater than 90 wt%; and B) from 5 wt% to 40 wt%; of an heterophasic propylene ethylene copolymer: the sum of the amounts of A) and B) being 100.
Abstract:
A propylene 1-hexene copolymer containing from 5.5 to 9.0% by weight, of 1-hexene derived units having: a) two peaks in the DSC plot having a difference in height ranging from 0 to 5 mW; b) the higher melting temperature, measured by DSC, ranging from 141.0 °C to 151.0 °C; c) Melt Flow Rate (MFR, measured according to ASTM D 1238, 230°C/2.16 kg, from 3.5 to 8.0 g/10 min.
Abstract translation:包含5.5至9.0重量%的1-己烯衍生单元的丙烯1-己烯共聚物具有:a)DSC曲线中的两个峰,其高度差为0至5mW ; b)由DSC测得的较高熔化温度范围为141.0℃至151.0℃; c)熔体流动速率(MFR,根据ASTM D 1238,230℃/ 2.16kg,3.5至8.0g / 10min测量)
Abstract:
Highly filled polyolefin compositions with improved balance of properties particularly for applications where puncture and tear resistance is requested comprising a flexible heterophasic polyolefin composition (I), consisting of a crystalline polymer fraction (A) consisting of a copolymer of propylene with ethylene having a fraction insoluble in xylene at 25°C of at least 90% by weight, and an elastomeric fraction (B) consisting of a copolymer or blend of copolymers of ethylene with propylene; said copolymer or blend containing units derived from ethylene in a quantity lower than 40% by weight. The fraction soluble in xylene at 25°C of said polyolefin composition having IVgpc lower than 2.5 dl/g, and a broad molecular weight distribution Mw/Mn (GPC) equal to or higher than 4, Mz/Mw (GPC) equal to or higher than 2.5.The filled polyolefin composition is further comprising of an inorganic filler (II) and a butene-1 copolymer having: flexural modulus (ISO 178) lower than 60 MPa, Shore A (ISO 868) lower than 90 and Tg (DMTA) lower than -20°C.
Abstract:
Composition comprising (A) from 30 to 60 by weight, of a soft polyolefin composition comprising, 10-50 % by weight of a copolymer (a) of propylene, which copolymer contains from 1 to 8 % of comonomer content; 50-90 wt % of a copolymer (b) of ethylene and other alpha-olefin(s), containing from 57 to 80 % of ethylene; wherein the weight ratio of the content of copolymer component (b) to the fraction XS soluble in xylene at room temperature (about 25 °C), both (b and XS) referred to the total weight of (a) + (b), is of 1.5 or less, and the intrinsic viscosity [η] of the said XS fraction is of 3 dl/g or more; and the total quantity of copolymerized ethylene is preferably from 30 % to 65 % by weight; (B) from 5 to 30 wt % of a glass fiber filler; (C) from 0 to 5 % by weight of a compatibilizer; (D) from 10 to 40 by weight of a polypropylene component selected from propylene homopolymers, propylene copolymers containing up to 5 % by moles of ethylene and/or C 4 -C 10 α-olefin(s) and combinations of such homopolymers and copolymers, wherein the Melt Flow Rate, of the polypropylene component D) is generally from 0.3 to 2500 g/10 min.
Abstract:
Polyolefin compositions comprising, all percentages being by weight: A)from 70 to 97% of a copolymer of propylene with hexene-1 containing from 3 to 9% by weight of recurring units derived from hexene-1, said copolymer having a melting temperature from 125°C to 143°C; B)from 3 to 30% of a butene-1 homopolymer or copolymer.
Abstract:
A masterbatch composition comprising, all percent amounts being by weight: A) 10-45 % of a homopolymer or a copolymer of propylene; B) 10-30 % of a copolymer of propylene with ethylene, containing from 18 to 45 % of ethylene; C) 42-60 % of a copolymer of propylene with ethylene, containing from 55 to 85 % of ethylene; said composition having a MFR L value from 0.01 to 10 g/10 min., a value of the intrinsic viscosity [η] sol of the fraction soluble in xylene at room temperature from 1.5 to 2.5 dl/g and a value of the ratio [η] sol /MFR L equal to or lower than 6.
Abstract:
Disclosed is a filled polyolefin composition comprising a blend of a 30-70wt.% of a first heterophasic polypropylene HECO1 and 70-30 wt.% of a second heterophasic polypropylene HECO2, the heterophasic copolymers differing in MFR and type of comonomers, in combination with glass fibers and optionally a compatibilizer. The filled polyolefin composition has a high fluidity in the molten state and a good balance of mechanical properties and finds use in injection molding applications.
Abstract:
Heterophasic copolymers of propylene with a MFR2 (230°C/2.16 Kg) of from 3.0 to 12.0 g/10 min comprise: (a) from 55 to 75 wt. % of a component (A) being a copolymer of propylene with ethylene or a C4-C10 alpha-olefin, comprising from 0.5 to 2.0 wt. % of ethylene and/or C4-C10 alpha-olefin units and having a MFR2 (230°C/2.16 K g) ranging from 60 to 140 g/10 min; and (b) from 25 to 45 wt. % of a component (B) being a propylene-ethylene copolymer comprising 25 to 45 wt. % of ethylene units and having a value of the intrinsic viscosity of the fraction soluble in xylene at room temperature (XS-IV) ranging from 5 to 9 dl/g.
Abstract:
A polyolefin composition comprising: A) 5-35% by weight of a propylene ethylene copolymer; B) 20-50% by weight; of an ethylene homopolymer; and C) 30-60% by weight of a terpolymer of ethylene, propylene and 1-butene derived units.
Abstract:
A polypropylene composition comprising: A) from 50 wt% to 90 wt%; of a propylene homopolymer; B) from 10 wt% to 50wt%; of a copolymer of propylene with from 30.0 wt% to 70.0wt%, of ethylene derived units; the sum of the amount of component A) and B) being 100; the composition having: i) an intrinsic viscosity of the fraction soluble in xylene at 25 °C comprised between 2.2 and 4.0 dl/g; ii) a MFR L (Melt Flow Rate according to ISO 1133, condition L, i.e. 230°C and 2.16 kg load) from 0.5 to 100 g/10 min; iii) a xylene soluble fraction ranging from 20 wt% to 50 wt%; the polypropylene composition being obtained by a two steps polymerization process wherein the catalyst system contains bismuth.