Borealis Ag

Borealis Technology Oy

Werner Posch

Pauli Leskinen

Bo Malm

Norbert Reichelt

Michael Tranninger

Stefan Schiesser

Sybille Simon

Manfred Stadlbauer

Ole Jan Myhre

Sybille Frank

Heterophasic polypropylene composition comprising

Heterophasic polypropylene copolymer composition

Heterophasic polypropylene composition comprising (A) 45 to 70 wt % of a propylene homo- or copolymer matrix with an MFRin accordance with ISO 1133 (230&#xb0; C., 2.16 kg load) of &#x2267;80 g/10 min and (B) 25 to 40 wt % of an elastomeric propylene-ethylene copolymer, having an intrinsic viscosity IV (ISO 1628, with decalin as solvent) of &#x2267;3.3 dl/g and an ethylene content of 20 to 50 wt %, (C) 0-15 wt % of an elastomeric ethylene/alpha-olefin random copolymer (D) 3-25 parts per weight of inorganic filler, the heterophasic polypropylene compositions having a total MFR(230&#xb0; C./2.16 kg) in accordance with ISO 1133 of &#x2267;5 g/10 min, a Charpy notched impact strength according to ISO 179/1eA at +23&#xb0; C. of &#x2267;15.0 kJ/m2, preferably &#x2267;25.0 kJ/m, a minimum value for the Charpy notched impact strength according to ISO 179/1eA at &#x2212;200 C of &#x2267;7.0 kJ/m2, preferably &#x2267;10.0 kJ/mand a tensile modulus according to ISO 527-3 of &#x2267;1200 MPa; their preparation and use for producing injection molded articles being free of flow marks.

Polypropylene composition comprising a) an isotactic polypropylene (iPP) produced in the presence of a single-site catalyst and said isotactic polypropylene (iPP) has a mean isotactic block length between two structural chain defects, as a statistical average, greater than 70, and b) an atactic polypropylene (aPP) with an absorbance ratio of the absorption band at 998 cmto the absorption band at 973 cm[A/A] below 0.80 wherein the weight ratio of said atactic polypropylene to the sum of said atactic polypropylene and said isotactic polypropylene (aPP/(aPP+iPP)) is at least 0.50 wt.-%.

Polypropylene composition with low surface energy

Inner liners of foam insulated refrigerators and freezers are made of mineral filled bimodal polyethylene.

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Enns, Austria

Werner Posch