Method for processing pTHF polymerization catalysts
AssigneeBASF SE
InventorsVolkmar Menger, Karsten Eller, Anton Meier, Michael Hesse
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Abstract
A process for working up at least partially deactivated polymerization catalysts for the polymerization or copolymerization of THF which are contaminated with the products of the polymerization or copolymerization of THF comprises (a) in a first step, cleaning the polymerization catalyst by treatment with steam at from 80 to 250° C. and a pressure of from 0.5 to 40 bar and, preferably, (b) in a second step, regenerating the clean polymerization catalyst.
Claims9
A process for working up an at least partially deactivated polymerization catalyst previously employed in the polymerization or copolymerization of THF and being contaminated with products of the polymerization or copolymerization of THF, which process comprises
- providing the at least partially deactivated catalyst, and
- cleaning the at least partially deactivated catalyst by treating it with steam at from 80 to 250° C. and an absolute pressure of from 0.5 to 40 bar to obtain a cleaned catalyst.
Dependencies are inferred from the claim text.