Method for processing catalysts for color number hydrogenation of polytetrahydrofuran and/or the esters thereof
OwnerVolkmar Menger, Michael Schwarztrauberinventors
Life of this patent
Estimating the term…
Abstract
Process for working up an at least partially deactivated hydrogenation catalyst for the color number hydrogenation of PTHF and/or PTHF esters, in which the hydrogenation catalyst is purified by treatment with steam at from 100 to 250° C. and a gauge pressure of from 0 to 40 bar.
Claims5
A process for working up an at least partially deactivated hydrogenation catalyst for the color number hydrogenation of PTHF and/or PTHF esters, comprising purifying a hydrogenation catalyst comprising nickel, cobalt, iron, ruthenium, palladium, platinum or copper by treatment with steam at from 100 to 250° C. and a gauge pressure of from 0 to 40 bar.
(canceled)
Dependencies are inferred from the claim text.