Borealis Ag

Gerhard Hubner

Markus Gahleitner

Susanne Kahlen

Hermann Braun

Yi Liu

Luigi Resconi

Jingbo Wang

Klaus Bernreitner

Pauli Leskinen

Georg Grestenberger

Joachim Fiebig

Noureddine Ajellal

Franz Ruemer

Manfred Gruenberger

Andreas Albrecht

Lisa Maria Steiner

The present invention is directed to a polyethylene-polypropylene composition comprising a blend (A) being a recycled material, said blend comprising polypropylene and polyethylene, and a compatibilizer (B) being a CCCterpolymer. Further, the present invention is directed to an article comprising said polyethylene-polypropylene composition and a process for preparing said polyethylene-polypropylene composition. The present invention is also directed to the use of a compatibilizer (B) being a CCCterpolymer for improving the impact-stiffness balance and the morphology of the blend (A).

Compatibilization of recycled polyethylene-polypropylene blends

High quality melt-blown webs having improved barrier properties (3rd drop, cm H2O resp. mbar) and a widened process window. The melt-blown webs show a specific chain structure.

High quality melt-blown webs with improved barrier properties

The present invention is directed to a polyethylene-polypropylene composition comprising a blend (A) being a recycled material, said blend comprising polypropylene and polyethylene, and a compatibilizer (B) being a copolymer of 1-butene and ethylene. Further, the present invention is directed to an article comprising said polyethylene-polypropylene composition and a process for preparing said polyethylene-polypropylene composition. The present invention is also directed to the use of a compatibilizer (B) being a copolymer of 1-butene and ethylene for improving the impact-stiffness balance and the morphology of the blend (A).

Recycled polyethylene-polypropylene blends comprising a compatibilizer

Catalyst system for producing ethylene copolymers in a high temperature solution process, the catalyst system comprising (i) a metallocene complex of formula (I) wherein M is Hf X is a sigma ligand, L is a bridge of the formula &#x2014;SiR&#x2014;, wherein each Ris independently a C-C-hydrocarbyl, tri(C-C-alkyl)silyl, C-C-aryl, C-C-arylalkyl or C-C-alkylaryl n is 0, 1 or 2 Rand Rare the same or can be different and can be a linear or branched C-C-alkyl group, Rand Rare the same or are different and are a CH&#x2014;Rgroup, with Rbeing H or linear or branched C-C-alkyl group Rand Rare the same or are different and can be H or a linear or branched C-C-alkyl group or a OR group, wherein R is a C-C-alkyl group Rand Rare the same or are different and can be H or a C(R)group, with Rbeing the same or different and Rcan be H or a linear or branched C-C-alkyl group or Rand Rand/or Rand Rtaken together form an unsubstituted 4-7 membered ring condensed to the benzene ring of the indenyl moiety, and Rand Rcan be the same or are different and can be H or a linear or branched C-C-alkyl group (ii) an aluminoxane cocatalyst and/or (iii) a boron containing cocatalyst and (iv) optionally an aluminum alkyl compound. 

Catalyst system for producing polyethylene copolymers in a high temperature solution polymerization process

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Breitenaich, Austria

Gerhard Hubner