Lummus Novolen Technology Gmbh

Basf Se Corporation

Basell Polyolefine Gmbh

Basell Polypropylen Gmbh

Lammus Novolen Technology Gmbh

Ralph-Dieter Maier

Andreas Winter

Nicola Stephanie Paczkowski

Matthew G Thorn

David Fischer

Volker Fraaije

Wolfgang Bidell

Jörg Schottek

Carsten Bingel

Roland Kratzer

Markus Oberhoff

Thorsten Sell

Anita Dimeska

Jürgen Suhm

Joerg Schulte

Horst Weiβ

Nicola Stefanie Paczkowski

Vassilios Galiatsatos

Gerard R Finnegan

Jiong Yu

Dean Anthony Roessner

Susan Patricia Setty

Tad Finnegan

Matthew Grant Thorn

Vassilious Galiatsatos

Disclosed are polypropylene articles with improved optical properties and/or an increased temperature of crystallization comprising a polypropylene resin and uniformly dispersed therein from about 1 ppm to about 10 ppm of one or more polycyclic organic pigments selected from blue, green, magenta, red, yellow, orange and violet polycyclic organic pigments and from about 50 ppm to about 250 ppm of one or more aromatic trisamide nucleating agents, where the ppm levels are by weight based on the weight of the polypropylene resin. The polypropylene is for example polypropylene homopolymer. The articles exhibit reduced haze, increased temperature of crystallization and excellent clarity.

Clarified polypropylene articles with improved optical properties and/or increased temperature of crystallization

Certain metallocene compounds are provided that, when used as a component in a supported polymerization catalyst under industrially relevant polymerization conditions, afford high molar mass homo polymers or copolymers like polypropylene or propylene/ethylene copolymers without the need for any &#x3b1;-branched substituent in either of the two available 2-positions of the indenyl ligands. The substituent in the 2-position of one indenyl ligand can be any radical comprising hydrogen, methyl, or any other C-Chydrocarbon which is not branched in the &#x3b1;-position, and the substituent in the 2-position of the other indenyl ligand can be any C-Chydrocarbon radical with the proviso that this hydrocarbon radical is branched in the &#x3b2;-position. This metallocene topology affords high melting point, very high molar mass homo polypropylene and very high molar mass propylene-based copolymers. The activity/productivity levels of catalysts including the metallocenes of the present invention are exceptionally high.

Metallocene compounds, catalysts comprising them, process for producing an olefin polymer by use of the catalysts, and olefin homo- and copolymers

A polymer blend includes a first random copolymer of propylene and one or more C-C&#x3b1;-olefins other than propylene having a melting point of above 116&#xb0; C. and up to about 145&#xb0; C. and which constitutes from about 60 weight percent to about 95 weight percent of the composition, and a second random copolymer of propylene and one or more C-C&#x3b1;-olefins other than propylene having a melting point of from about 70&#xb0; C. to no more than 116&#xb0; C. and which constitutes from about 5 weight percent to about 40 weight percent of the composition. The polymer blend includes a xylene soluble fraction having a weight average molecular weight of above about 100 kg/mol and an intrinsic viscosity of above about 1.0 dl/g.

Polypropylene resin composition

A process for the polymerization of olefins, in particular a process for the copolymerization of propylene with further olefins, is carried out in the presence of highly active catalyst systems comprising specifically selected metallocenes, in particular ones which bear different substituents in position 2 and position 4 on an indenyl ligand. Novel polypropylene copolymers can be obtained by this process.

Transition metal compound, ligand system, catalyst system and its use for the polymerization and copolymerization of olefins

Transition metal compound, ligand system, catalyst system and the use of the latter for polymerisation and copolymerisation of olefins

Growing community of inventors

White Plains, NY, United States of America

Ralph-Dieter Maier