Borealis Ag

Perstorp Ab

Katri Nikkilä

Pauli Leskinen

Kalle Kallio

Erno Elovainio

Jani Aho

Irfan Saeed

Hakan Bjornberg

Christoffer Paulsson

Jukka-Pekka Parjanen

Håkan Björnberg

A process for the offline deactivation of at least one single site catalyst comprising contacting said catalyst with a deactivating agent selected from an aprotic low molecular weight carbonyl group containing organic compound or an aprotic low molecular weight orthoester or an aprotic low molecular weight acetal compound.

Process for catalyst deactivation

The present invention is directed to a process for feeding a polymerisation catalyst into a polymerisation reactor (), comprising the steps of: (i) maintaining a catalyst slurry comprising a diluent and a solid catalyst component in a catalyst feed vessel (); (ii) continuously withdrawing a stream of the catalyst slurry from the catalyst feed vessel (); and (iii) introducing the withdrawn portion of the catalyst slurry into the polymerisation reactor (), wherein the catalyst slurry is transferred by using a valveless piston pump () from the catalyst feed vessel () into the polymerisation reactor (); the diluent has a dynamic viscosity of from 0.01 to 20 mPas at the conditions within the catalyst feed vessel (), and wherein the catalyst slurry is transferred along a substantially vertical path downwards from the catalyst feed vessel () to the reactor ().

Process for feeding a polymerisation catalyst

The present invention refers to a process for hydrogenation of caprolactone and/or its oligomers or polymers to 1,6-hexanediol. The process is performed in liquid phase at a pressure between 100 and 350 bar and is performed in the presence of a catalytically effective amount of at least one catalyst comprising Cu, Mn, Al, Cr, Zn, Ba and/or Zr.

Production of 1,6-hexanediol

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Espoo, Finland

Katri Nikkilä