Rudolf Erdmenger
Rudolf Erdmenger (born September 29, 1911 in Augsburg , † 1991 ) was a German mechanical and process engineer .
Life
Rudolf Erdmenger was born as the son of the production engineer of the Gersthofen works of the Farbwerke vorm. Meister, Lucius & Brüning AG , today Clariant . After graduating from high school, he studied mechanical engineering at the Technical University of Munich . In 1932 he became a member of the Corps Vitruvia Munich. In 1935 he completed his studies with the academic degree of Dipl.-Ing. and took his first job in industry at Humboldt-Deutzmotoren AG in Cologne-Deutz. After about two years he switched to the Paul Leistritz machine factory in Nuremberg , where he worked on the development of kneading pumps for IG Farben in Frankfurt am Main . In 1939 he moved to IG Farben in the Wolfen plant near Bitterfeld . There he began to work with Walter Meskat on the development of the closely intermeshing twin screw extruder , for which a patent was applied for in 1944 . Erdmenger and Meskat were able to flee from the Soviet occupation zone to the Rhineland after the end of the Second World War . While Meskat continued his professional activity at Bayer AG in Dormagen , Erdmenger moved to the Leverkusen site , where in 1948 he took over the management of the high viscosity technology process group in the newly established department of applied physics , also known as AP for short , which he took over until his retirement 1976 directed.
Erdmengers inventions found in polycarbonate - compounding the Bayer Group application and were decisive for the technical and commercial success of this plastic. A later development was reactive extrusion in the production of paints and thermoplastic polyurethanes .
His studies, published in the journal Chemie Ingenieur Technik , are considered fundamental in the professional world. As a globally recognized specialist in high-viscosity technology, he was given the honor of editing two chapters for Houben-Weyl . He has received awards from the Society of Plastics Engineers and the University of Akron for his life's work .
Awards
- 1986: Distinguished Service Award from the Society of Plastics Engineers (SPE)
- Induction into the Polymer Processing Hall of Fame at the University of Akron, Ohio , USA
Fonts
Contributions in standard works:
- Press off . In: Houben-Weyl, Methods of Organic Chemistry. 4th edition, Volume I / 1, 1958, pp. 199 ff.
- Execution of mixing processes in gases, liquids, powders and plastic materials . In: Houben-Weyl, Methods of Organic Chemistry , 4th Edition, Volume I / 2, 1959, p. 699 ff.
- Screw machines for high viscosity process engineering. 1978.
Journal Articles:
- Material shredding mixing processes . In: Chemische Industrie , born 1953, pp. 513-518.
- For the development of screw evaporators . In: Chemie Ingenieur Technik , 34th year 1962, pp. 751–754.
- Multi-shaft screws in process engineering . In: Chemie Ingenieur Technik , 36th year 1964, pp. 175–185.
- Degassing of highly viscous liquids . In: MM Maschinenmarkt , Volume 80, 1974, Issue 1, pp. 2–6 / Issue 10, pp. 148–152.
- Investigations on a screw evaporator . In: Chemie Ingenieur Technik , 42nd year 1970, pp. 1–5 (together with M. Ullrich)
Patents:
- Device for kneading, gelatinizing and pressing plastic masses (patented technology: co-twist double screw with sealing profile). Patent DE 862668 C, priority year 1944 (together with Walter Meskat, basic patent for the closely intermeshing twin screw extruder)
- Device for dewatering or leaching of fibrous masses (patented technology: co-twist triple screw with sealing profile for pressing). Patent DE 872732 C, priority year 1944 (together with Walter Meskat)
- Mixing and kneading device (patented technology: constant-twist kneading disks with sealing profile, single-thread and double-thread as well as special case circular eccentric). Patent DE 813154 C, priority year 1949 (basic patent for the kneading element)
- Mixing and kneading device (patented technology: constant-twist kneading disks with sealing profile, three-thread, kneading elements, extension). Patent DE 940109 C, priority year 1953
- Worm arrangement (patented technology: co-twist double screw with sealing profile and modular design). US 3122356 A, priority year 1958
- Kneading device with two or more screws (patented technology: co-twist double screw with sealing profile and shoulder in the screw channel). Patent DE1180718 B, priority year 1962
literature
- James L. White: Pioneer of the Modular Co-rotating Twin Screw Extruder. Rudolf Erdmenger (1911–1991). In: International Polymer Processing , Volume 16 2001, No. 2, p. 86. ( digitized version )
- Klemens Kohlgrüber (Ed.): Co-Rotating Twin-Screw Extruder. 2008. ( digitized version )
- Avraam I. Isayev (Ed.): Encyclopedia of Polymer Blends, Volume 2: Processing. 2011. ( digitized version )
Individual evidence
- ↑ a b Philisterverein Vitruvia eV Munich, list of members as of January 1937, no. 506.
- ↑ Success story: 50 years of Makrolon compounding in Krefeld-Uerdingen
personal data | |
---|---|
SURNAME | Erdmenger, Rudolf |
BRIEF DESCRIPTION | German mechanical and process engineer |
DATE OF BIRTH | September 29, 1911 |
PLACE OF BIRTH | augsburg |
DATE OF DEATH | 1991 |