Eugen de Haën

from Wikipedia, the free encyclopedia
Eugen de Haën
Specialty of the de Haen company
Debt from October 1920
Share of the merged Riedel-de Haen AG (Berlin) from 1928

Eugen de Haën (born December 26, 1835 in Duisburg , † November 16, 1911 in Hanover ; full name Carl Johann Eugen de Haën ) was a German chemist and entrepreneur.

Life

Eugen de Haën studied chemistry in Wiesbaden with Fresenius and later in Heidelberg with Bunsen . In 1856 he received his doctorate in Heidelberg.

In 1862 Eugen de Haën married Mathilde Schroeder (1834–1909), the daughter of the forester Georg Heinrich Ernst Schroeder from Osterwald in Hainholz near Hanover. She bore him ten children. In the 1870s, Eugen de Haën had a villa built at Schiffgraben 34 by the architect Heinrich Köhler . The house is no longer preserved.

The de Haën company

After various activities, u. a. in the Silesia Verein Chemischer Fabriken in Saarau (Lower Silesia), in 1860 Eugen de Haën participated in the chemical laboratory of Julius Knoevenagel (* 1832, † 1914) in Linden near Hanover, with whom he initially founded the small “Chemische Fabrik Dr. Eugen de Haen & Cie. ”In Falkenstr. 9 founded.

As early as 1862, he moved to List , a suburb of Hanover, and produced there in the larger “E. de Haen Chemische Fabrik List GmbH “ high purity salts and oxides. Due to the upswing after 1870/1871, the company expanded in "Fabrikstraße", later renamed " Liebig -Str.". The laboratory was headed by Johannes Skalweit as a young university graduate . In 1886, for its 25th anniversary, the company employed 170 people there.

Because, on the one hand, Hanover's residential development in the immediate vicinity grew rapidly and, on the other hand, there was no railway connection, the company had to look for a new location and finally found it cheap in a 120- acre site with good rail connections in the village of Seelze . In 1902 the company relocated to Seelze. The old company premises were transferred to the descendants in the course of the early succession and was finally removed at the expense of the heirs. All development costs for the future building land were contractually related to the heirs, the "construction of a jewelry and playground" was therefore dedicated to the patron as "de Haen-Platz".

In 1911 the "E. de Haen Chemische Fabrik List GmbH ” in Seelze has more than 10,000 products. Up to the present day, a specialty has been the production of hydrofluoric acid from fluorspar and oleum . In 1911 his eldest son, Dr. Wilhelm de Haën (* 186 ?; † 1939) took over the management of the company. Under him it was renamed the family GmbH in 1912.

In 1922 the company became a stock corporation, but in 1923 the chemical-pharmaceutical factory JD Riedel AG acquired all shares in the company Eugen de Haën Aktiengesellschaft for 40 million paper marks during the high phase of inflation .

In 1928, both chemical companies were merged to form "JD Riedel - E. de Haën AG", based in Berlin.

In 1943 the company was given the current name "Riedel-de Haën AG". Because of the bomb damage in World War II , the company's headquarters were relocated from Berlin-Britz to Seelze near Hanover in 1948 .

In 1955 the majority of the shares were taken over by the Cassella Farbwerke Mainkur in Frankfurt am Main. The Seelze plant became the main plant of Riedel-de Haën AG through rationalization and production expansion .

In 1995 the company was split, the laboratory chemicals division was sold to Sigma-Aldrich and the industrial chemicals division to Honeywell.

Awards

literature

Web links

Commons : Eugen de Haën  - collection of images, videos and audio files

Individual evidence

  1. ↑ Chemical Factory Dr. Eugen de Haen & Cie., Falkenstrasse. 9 in Linden .
  2. ↑ Report on in-depth research for "Chemische Fabrik Eugen de Haen" in Hannover List ( memento of the original from September 14, 2014 in the Internet Archive ) Info: The archive link was automatically inserted and not yet checked. Please check the original and archive link according to the instructions and then remove this notice. (PDF; 55 kB) of September 29, 2008.  @1@ 2Template: Webachiv / IABot / www.hannover.de
  3. ↑ Chronology of the redesign of the Lister company premises  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. .@1@ 2Template: Toter Link / www.altlasten-hannover.de  
  4. ^ Klaus Mlynek, Waldemar R. Röhrbein: Hanover Chronicle: From the beginnings to the present. Numbers. Data. Facts . Schlütersche, 1991, ISBN 3-87706-319-5 , p. 157 ( limited preview in Google Book search).
  5. ^ History of JD Riedel AG 1770 to July 9, 1928 .
  6. ↑ 175 years of Riedel-de Haën 1814–1989, company publication 1989 for employees, pp. 8–24.
  7. ↑ In 2009 chemical and radioactive contamination was found on the property there.
  8. ↑ as a result of which a public discussion was held about the remediation of the contaminated sites and their assumption of costs by the city, legal successors or property owners. 2012: the renovation is underway; the dispute over the cost burden continues.
  9. ↑ De-Haën-Platz: renovation work has started. In: fd-regionhannover.de. August 20, 2012. Retrieved July 12, 2017 .
personal data
SURNAME Haën, Eugen de
ALTERNATIVE NAMES Haën, Carl Johann Eugen de (full name)
BRIEF DESCRIPTION German chemist, entrepreneur and councilor of commerce
DATE OF BIRTH December 26, 1835
PLACE OF BIRTH Duisburg
DATE OF DEATH November 16, 1911
Place of death Hanover