Borealis Technology Oy

Borealis Ag

Kimmo Hakala

Peter Denifl

Eberhard Ernst

Sameer Vijay

Lauri Huhtanen

Päivi Pitkänen

Pertti Elo

Ismo Lehtiniemi

Mikko Lylykangas

Petri Lehmus

Soile Rautio

Pasi Matikainen

Udo Manfred Stehling

Tom Elovirta

Andreas Meinecke

Manfred Arnold

Erik Mansner

Jyrki Kauhanen

Michael Bartke

Jari HÄTÖNEN

Jeanette Aumo

Jukka Räsänen

The present application aims to provide a process for producing a solid polymerization catalyst component, including the steps of (A) producing a solution with a transition metal compound and a solvent; (B) solidifying a component with the transition metal compound to produce the solid polymerization catalyst component in a solidification stage; (C) recovering from the solidification stage a liquid stream containing a minor amount of the transition metal compound dissolved therein and a solid catalyst stream; and (D) recovering the transition metal component from the liquid stream, characterized in that step (D) may include concentrating the solution to produce a first product stream including the solvent and being essentially free of the transition metal compound and a second product stream including the solvent and the transition metal compound, characterized in that the concentration is conducted within a temperature range of from 0 to 100 degrees Celsius.

Process for recovering a transition metal compound

A process for manufacturing a branched polypropylene, said branched polypropylene having a branching index g' of less than 1.00, the process comprising the step of polymerizing propylene and optionally one or more other comonomers under non-supercritical conditions in a reaction vessel, wherein:

Process for the manufacture of branched polypropylene

The invention provides a process for the preparation of a propylene polymer in which proplylene and a comonomer copolymerizable therewith and of greater molecular weight than propylene are polymerized in a single site catalyst catalized polymerization reaction, characterized in that said polymerization reaction is effected at least in part at a temperature of at least 70&#xb0; C.

Polymerization process for producing propylene copolymers

The invention provides a process for the preparation of a propylene polymer in which propylene and a comonomer copolymerizable therewith and of greater molecular weight than propylene are polymerized in a single site catalyst catalized polymerization reaction, characterised in that said polymerization reaction is effected at least in part at a temperature of at least 70&#xb0; C.

Polymerization process for producing copolymers

Growing community of inventors

Helsinki, Finland

Kimmo Hakala