It has been shown earlier that various geranyl and (E,E)-farnesyl esters are major components of natural sex pheromones of click beetles,Agriotes. In addition, some isomeric terpene esters have an inhibiting or synergistic influence upon the sex communication of some species ofAgriotes. In this paper the influence of synthetic terpene esters in pheromone compositions on the sex communication of differentAgriotes species occurring in different climatic zones has been studied. The relationship between the biological activity of sex attractants and their chemical structure has been established.
Für die Untersuchung von flüchtigen Abbauprodukten chlor‐ und bromhaltiger Copolymere des Polycaproamids wurden die Massenspektrometrie und Pyrolyse‐Gaschromatographie verwendet. Es wurde gezeigt, daß die chemische Struktur des Copolymers einen Einfluß auf die quantitative Abspaltung von Halogenen und ε‐Caprolactam sowie auf die Zersetzungstemperatur des Copolymers hat. Beim thermischen Abbau verschiedener Copolymere wurde die Temperaturabhängigkeit der Abspaltung von H2O, CO2, CO, CH4, HCN, Toluen und Benzen quantitativ bestimmt.
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