Eugen Frank (chemist)

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Eugen Frank (born December 31, 1854 in Trossingen , † April 27, 1914 in Cologne ) was a German chemist .

Grave in the Melaten cemetery

Career

In 1879 he joined the Elberfeld paint factory (formerly Friedrich Bayer & Co) . Shortly thereafter, Frank synthesized croceic acid for the first time , which became the basis for a new manufacturing process for dyes, including crocein scarlet and crocein yellow . The company received its first patent on March 18, 1881 for the manufacturing process for these dyes .

With this first patent, however, the Elberfeld paint factory had little luck, as Agfa soon found a similar procedure, against which it was sued in vain. His assistants were Paul Seidler and Carl Duisberg , whereby Seidler left the company within three years and Duisberg later became his representative.

1884 Frank developed the azo Chrysamine G . In 1895 he accepted a position at the laboratory at the University of Bonn .

His grave is in the Melaten cemetery in Cologne (corridor R4 no. 165).

Publications

  • About monochlorous lactic acid and its conversion into glyceric acid ; 1880
  • Synthesis of glyceric acid through the mediation of monochlorolactic acid ; 1881
  • Process for dyeing in a strongly acidic bath of naphthylamine derivatives and tetraxo compounds of paradiamines ; Cologne, 1898

Individual evidence

  1. ↑ Process for the preparation of crocein scarlet, crocein yellow and other red and yellow dyes from a new monosulfonic acid of betanaphthol. German Patent No. 18027 of March 18, 1881, granted May 15, 1882
  2. ↑ Florian Dachs: Inventions and innovation processes in the German Empire: The example of the chemical-pharmaceutical industry based on the Bayer company. Grin Verlag, 2005, ISBN 3-638-35873-9 , p. 26. Limited preview in the Google book search
  3. ^ Carl Duisberg: My Memoirs. Reclam, 1933, p. 28.
  4. ↑ Ernst Homburg, Anthony S. Travis, Harm G. Schröter (Eds.): The Chemical Industry in Europe, 1850-1914 . Industrial Growth, Pollution, and Professionalization. Kluwer Academic Publishers, Dordrecht, Boston, London 1998, ISBN 0-7923-4889-3 , pp. 272 ( limited preview in Google Book search).
personal data
SURNAME Frank, Eugene
BRIEF DESCRIPTION German chemist
DATE OF BIRTH December 31, 1854
PLACE OF BIRTH Trossingen
DATE OF DEATH April 27, 1914
Place of death Cologne