 The creation of such an agreement was in response to the emerging "petrochemistry" whose further growth finally resulted in the extinction of the company in 1893.Büchner was first married with his cousin Mathilda Büchner (6 January 1850 – 1 April 1908) and had two children with her, the chemist Carl Büchner (28 June 1877 – 9 July 1929) and the painter Friedrich (Fritz) Büchner (1 April 1880 – 22 June 1965).After their divorce in 1885, he married Marie Ludovike Karoline von Ferber (6 August 1850 – 20 April 1925).