Organic Pigment Dyes
In this movie Dr.-Ing. Hans J. Scheel talks about:
how he joined 1958 Prof. Paul Karrer at Chemical Institute of Zurich University to separate Curare alkaloids by chromatography and 1959 joined Prof. Fritz Laves at ETH Zurich to solve problem of crystallizing organic pigment dye quinacridone.
how he joined 1958 Prof. Paul Karrer at Chemical Institute of Zurich University to separate Curare alkaloids by chromatography and 1959 joined Prof. Fritz Laves at ETH Zurich to solve problem of crystallizing organic pigment dye quinacridone.
Prof. Paul Karrer — Ceramic pot and calebasse with Curare
In the laboratory 1958 — Prof. Fritz Laves — Precession cameras
References
H. Koyama, F.
Laves, and H. J. Scheel : “Kristallstrukturen organischer Pigmentfarbstoffe I :
γ-Chinacridon C20H12O2N2”, Naturwiss. 53
(1966) p. 700. K. Ogawa, F.
Laves, and H. J. Scheel : “Kristallstrukturen organischer Pigmentfarbstoffe II :
4,4'-Diamino-l,l'-Dianthrachinonyl C28H16N2O4”,
Naturwiss. 53 (1966) p. 700-701.K. Ogawa and H. J. Scheel : “The Structure of 4,4'-Diamino 1,1'Bianthraquinone.
C28H16N2O4”, Zeitschrift für Kristallographie
130 (1969) p. 405-419.