Process for the preparation of polymers containing amino groups employing a heterogeneous iron catalyst

[0014]The present invention provides a process for the preparation of polymers containing amino groups by hydrogenation of nitrile groups containing polymers. The term polymers as used in this invention, refers to compounds comprising one or more kinds of repeating units wherein the total number of repeating units is 10 or more, preferably 100 or more and most preferably 1000 or more.

[0015]Generally, the nitrile groups containing polymers have a Mooney viscosity of from 10 to 180 MU, more preferably of from 20 to 150 MU and most preferably of from 30 to 120 Mooney units. The Mooney viscosity (ML (1+4@100° C.)) is determined at 100° C. by means of a shear disc viscometer in accordance with ASTM D 1646.

[0016]The nitrile groups containing polymers typically have a weight average molar mass Mw of from 20,000 to 1.2 Mio g / mol, preferably of from 100,000 to 1 Mio. g / mol, more preferably of from 200,000 to 800,000 g / mol. The weight average molar weight Mw is determined by gel-permeation