Ineos Sales (uk) Limited

Ineos Commercial Services UK Limited

Ineos Sales Limited

Benoit Sibourd

Jean-Louis Chamayou

Process for the continuous transition between two different and compatible polymerization catalysts.

Polymerization process

Process for the transition between an ethylene co-polymerization process in a polymerization reactor in the presence of a catalyst and of ethylene E and an olefin co-monomer A to produce an ethylene copolymer PEA into an ethylene co-polymerization process carried out in the same polymerization reactor in the presence of a catalyst and of ethylene E and an olefin co-monomer B to produce an ethylene copolymer PEB. Co-monomers A and B are different and are both present in the reactor during at least part of the transition from PEA to PEB. The transition is performed continuously by (i) starting the transition by stopping steady state production of ethylene copolymer PEA and (ii) ending the transition when steady state production of ethylene copolymer PEB is achieved.

Process for the continuous transition between two ethylene copolymers containing a different comonomer. In particular, the process is for the continuous transition between two ethylene copolymers containing a different comonomer.

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Peyrolles en Provence, France

Benoit Sibourd