Prantner studied philosophy, theology and political science after his graduation in 1949.
He received his degree in Political Science involving work in Civil Law and International Relations. Later he became a Doctor in theology.
The deceased was also an honorary doctor of Social Science.
From the year 1955 he was the personal scientific colleague of the former Chancellor of Austria, Julius Raab († 1964).
After his withdrawal from politics, Pratner lead his office from 1961 to 1964.
From 1974 to 1982 he was Professor for Ethics and Social Studies to the Philosophic-theological Order College of the Augustinian Choir at Stift Klosterneuburg in Vienna.
In 1982 he was occupied as the Professor for Ethics and Social Studies at the neo-Conservative Philosophic-theological University of the Cistercians at Stift Heiligenkreuz. He became an emeritus in 1998.
The deceased was the excellent ambassador and agent of the Sovereign Order of Malta.
Prantner was closely connected to the upper-Austrian garden suburb Aigen at the 'Theological Summer Academy".
In 2002 he was recognized with the Austrian Award for Science and Art 1st Class.
he published numerous works. In 2004 his memoir appeared under the title "Between the Playing Fields and the Vatican".
His memorial Mass will take place on 21. December at 11 O'Clock in the Parish Church of the market town of Hinterbrühl 17 kilometers southwest of Vienna.
