Abstract:
The present invention relates to a polypropylene composition showing a high melt flow rate and high melt strength while maintaining high impact strength. The composition of the present invention is obtainable by using a low molecular weight linear isotactic polypropylene as melt flow enhancer for a high molecular weight polypropylene having a high melt strength and impact strength. The inventive composition could be used for the production of different articles.
Abstract:
The present invention relates to a polyolefin composition comprising (a) a heterophasic propylene copolymer, wherein the xylene cold soluble fraction of the heterophasic propylene copolymer has an intrinsic viscosity of lower than 2.0 dl/g, (b) a high density polyethylene having a density of at least 940 kg/m 3 , (c) a linear low density polyethylene, and (d) an inorganic filler, wherein the polyolefin composition has a MFR 2 (230°C) of at least 20 g/10min.
Abstract:
The invention relates to a heterophasic polyolefin composition having improved flowability and impact strength but also an excellent impact/stiffness balance and a low amount of a hexane extractable fraction, to a process for the preparation of such a heterophasic polyolefin composition, to articles made therefrom and uses of the heterophasic polyolefin composition. The heterophasic polyolefin composition, comprises a matrix comprising a heterophasic propylene base polymer, comprising a matrix comprising a propylene homo- and/or copolymer, an elastomeric ethylene/ alpha-olefin phase dispersed in the matrix, and an ethylene polymer component having an MFR (2.16 kg/ 190 °C) of 15 to 300 g/10 min. and a density of 0.915 g/cm3 or more, wherein the heterophasic polyolefin composition comprising monomer units derived from an oligomeric diene compound, and having a hexane extractable fraction in an amount of not more than 6 wt.%, measured from extruded cast films of 100μm thickness at 50 °C and 2 h extraction time and an MFR (2.16 kg, 230 °C, ISO 1133) of 8 to 80 g/10 min. The heterophasic propylene polymer composition may be used for extrusion, injection moulding, blow moulding, injection stretch blow moulding, cast film extrusion or thermoforming.
Abstract:
Polypropylene composition having a melt flow rate MFR 2 (230 °C) of equal or above 15 g/10min comprising: (a) a crystalline polypropylene matrix; (b) an elastomeric propylene copolymer phase having a propylene content in the range of 40 to 80 wt.-%, and an intrinsic viscosity in the range of more than 0.7 to less or equal 2.5 dl/g; (c) a first polyethylene having a density in the range 905 to 925 kg/m3 and melt flow rate MFR 2 (190 °C) of below 30 g/10min; (d) a second polyethylene having a density of above 915 kg/m 3 , and a melt flow rate MFR 2 (190 °C) of equal or above 30 g/10min.
Abstract:
Polypropylene composition comprising (a) a high melt strength polypropylene having a melt flow rate MFR2 (230 °C) of equal or below 15 g/lOmin and a branching index g' of below 1.0, (b) a first heterophasic propylene copolymer comprising a polypropylene having a melt flow rate MFR2 (230 °C) in the range of 50 to 500 g/lOmin and an elastomeric propylene copolymer having a propylene content in the range of 50 to 80 wt.-% and an intrinsic viscosity (IV) of equal or more than 2.5 dl/g, (c) a second heterophasic propylene copolymer comprising a random propylene copolymer having a melt flow rate MFR2 (230 °C) in the range of 1 to 40 g/lOmin, a branching index g' of 1.0, and a comonomer content of more than 0.5 wt.-%,and an elastomeric propylene copolymer having a propylene content in the range of 50 to 80 wt.-%, and an intrinsic viscosity (IV) of equal or below 2.4 dl/g, (d) a polyethylene plastomer having an ethylene content of at least 50 wt.-%, and (e) a mineral filler (F).
Abstract:
Polyolefin composition comprising (a) a heterophasic propylene copolymer comprising a polypropylene (PP) having a melt flow rate MFR 2 (230 °C) of 30 to 350 g/10min, and an elastomeric propylene copolymer (E) having an intrinsic viscosity (IV) in the range of 1.5 to 3.0 dl/g and (b) a polyethylene having a melt flow rate MFR 2 (190 °C) of 15 to 100 g/10min, wherein (i) the total polyolefin composition has a melt flow rate MFR 2 (230 °C) of more than 15 to 200 g/lOmin, and (ii) the weight ratio of elastomeric propylene copolymer to the polyethylene is below 2.0.
Abstract:
Heterophasic propylene copolymer (HECO) comprising: (a) a polypropylene matrix comprising: (a 1 ) a first propylene homopolymer fraction (PPH1) with a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of > 200 to 500 g/10min, (a 2-1 ) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of > 30 to ≤ 200 g/10min or, (a 2-2 ) a second propylene homopolymer fraction (PPH2) with a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of > 5 to ≤ 30 g/10min and, (a 3-1 ) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of 0.03 to ≤ 5 g/10min, if the second propylene homopolymer fraction is fraction (a 2-1 ) or, (a 3-2 ) a third propylene homopolymer fraction (PPH3) with a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of > 30 to ≤ 200 g/10min, if the second propylene homopolymer fraction is fraction (a 2-2 ), wherein the polypropylene matrix has a melt flow rate MFR 2 (230°C) measured according to ISO 1133 in the range of 30 to 500 g/10min and a xylene cold soluble fraction determined at 23°C according to ISO 6427 in the range of 0.5 to 2 (230°C) measured according to ISO 1133 in the range of 25 to 200 g/10min and, (ii) the amorphous phase (AM) of the cold soluble fraction (XCS) of the heterophasic propylene copolymer has an intrinsic viscosity measured according to ISO 1628-1 (at 135°C in tetraline) of ≥ 2.0 dl/g, and a process for its preparation.
Abstract:
Heterophasic propylene copolymer (HECO) comprising (a) a matrix (M) being a polypropylene (PP), said polypropylene (PP) comprises at least three polypropylene fractions (PP1), (PP2) and (PP3), the three polypropylene fractions (PP1), (PP2) and (PP3) differ from each other by the melt flow rate MFR 2 (230 °C) measured according to ISO 1133, and (b) an elastomer (E) dispersed in said matrix (M), wherein the elastomer (E) is included in an amount of 20 wt.-% or more, based on the weight of the heterophasic propylene copolymer (HECO).
Abstract:
The present invention relates to a polyolefin composition comprising a heterophasic propylene copolymer having a MFR 2 of at least 5 g/10min and a polyethylene (PE) having a density of at least 935 kg/m 3 and a melt flow rate MFR5 (190 °C) of less than 1.5 g/10min.5
Abstract:
The invention relates to a polypropylene composition showing a high melt flow rate and simultaneously high stiffness and a process for the production thereof. The invention further relates to a material comprising the inventive polypropylene.