Basell Polyolefine Gmbh

Albert-ludwigs-universitat Freiburg

Basell Poliolefine Italia S.r.l.

Jürgen Rohrmann

Andreas Winter

Shahram Mihan

Claudio Cavalieri

Walter Spaleck

Volker Dolle

Marco Ciarafoni

Paola Massari

Martin Antberg

Giampaolo Pellegatti

Bernd Bachmann

Michele Grazzi

Mara Destro

Rolf Muelhaupt

Klaus Klemm

Sander Willems

Thomas Mecklenburg

Erik Hans Licht

Timo Hees

Rainer Köhler

Carl Gunther Schirmeister

Karsten Schmitz

Mikhail Sergeevich Dureev

Yannic Kessler

Dieter Langenfelder

Frank Küber

Holger Ahrenberg

Christoph Callsen

Mirco Müller

Kolano Benjamin

Steer Peter

Fabiana Fantinel

Volker Altstädt

A process for producing articles with an extrusion-based additive manufacturing system using a consumable filament made from or containing a propylene polymer composition made from or containing:

Polypropylene for extrusion additive manufacturing

The invention relates to a glass fiber-reinforced molding composition composed of an olefin polymer, in particular a propylene polymer. The molding composition comprises an olefin polymer which contains 5-50% by weight of glass fibers which are bonded to the olefin polymer by means of a compatibilizer, and from 10to 1% by weight, preferably from 10to 10% by weight, of a phthalocyanine pigment as the nucleating agent. The low costs and the fact that even a very small fraction of the phthalocyanine pigment in the polymer leads to sufficient nucleation ensures extremely inexpensive production. The nucleation with the phthalocyanine pigment leads to an improvement in the impact strength, and also in the yield stress and tensile strain at break of the molding composition.

Molding compositions of a glass fiber-reinforced olefin polymer

The novel metallocenes of the formula Iin which, preferably, Mis Zr or Hf, Rand Rare alkyl or halogen, Rand Rare hydrogen, Rand Rare alkyl or haloalkyl, &#x2014;(CRR)&#x2014;R&#x2014;(CRR)&#x2014; is a single- or multi-membered chain in which Rmay also be a (substituted) hetero atom, m+n is zero or 1, and Ris hydrogen, form, together with aluminoxanes as cocatalysts, a very effective catalyst system for the preparation of polyolefins of high stereospecificity and high melting point.

Metallocenes containing ligands of 2-substituted indenyl derivatives, process for their preparation, and their use as catalysts

A process for the preparation of an olefin polymer by polymerization or copolymerization of an olefin of the formula R&#x2014;CH&#x2550;CH&#x2014;R, in which Rand Rare identical or different and are a hydrogen atom or a hydrocarbon radical having 1 to 14 carbon atoms or Rand R, together with the atoms connecting them, can form a ring, at a temperature of from &#x2212;60&#xb0; to 200&#xb0; C., at a pressure of from 0.5 to 100 bar, in solution, in suspension or in the gas phase, in the presence of a catalyst formed from a metallocene in the meso-form or a meso:rac mixture, with meso:rac&#x3e;1:99, as transition-metal compound and a cocatalyst, wherein the metallocene is a compound of the formula I,in which Mis Zr or Hf, Rand Rare identical or different and are methyl or chlorine, Rand Rare identical or different and are methyl, isopropyl, phenyl, ethyl or trifluoromethyl, Rand Rare hydrogen or as defined for Rand R, or Rforms an aliphatic or aromatic ring with R, or adjacent radicals Rform a ring of this type, and Ris aradical, and m plus n is zero or 1.

Process for the preparation of polyolefins

Growing community of inventors

Kelkheim, Germany

Jürgen Rohrmann