Abstract
AbstractWith the aid of model compounds – derivatives of endo‐ and exo‐dicyclopentadiene – it has been established that: (a) the 9,10‐double bond (the double bond in the norbornane‐ring) is involved in the polymerization of dicyclopentadiene with ethylene and propylene; (b) dicyclopentadiene, present in the polymerization mixture in the endo‐configuration, occurs in the exo‐configuration in the polymer chain.The same model compounds enable the DCPD‐content of ethylene‐propylene‐DCPD terpolymers to be determined by infrared‐spectroscopic methods. Use is made of the 3045 cm−1 band, which is characteristic of endo‐cyclic double bonds in five‐membered rings.
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