The polymerization of dicyclopentadiene (DCPD, mixture of endo and exo isomers), 9,10- dihydrodicyclopentadiene (H-DCPD), exo-DCPD and endo-DCPD catalyzed by TiCl4/Et2AlCl is studied. Oligomers containing 2,3-enchained units are obtained in good yields. From the endo isomer, at low DCPD/Ti ratio, we obtain a crystalline, stereoregular tetramer having a 2,3-exo-disyndiotactic structure. The results show that the presence of the double bond in the cyclopentene ring, the spatial disposition of the cyclopentene and the oligomerization conditions play a fundamental role to give an unique crystalline material. Hydrogenation and epoxidation of the obtained products is reported as well.
Ti(IV)-catalyzed polymerization of dicyclopentadiene: a study on endo/exo-isomers reactivity and postpolymerization modification / G. Zanchin, I. Pierro, G. Leone, A. Rapallo, W. Porzio, G. Ricci. ((Intervento presentato al convegno Blue Sky Conference on Olefin Polymerization tenutosi a Sorrento nel 2016.
Ti(IV)-catalyzed polymerization of dicyclopentadiene: a study on endo/exo-isomers reactivity and postpolymerization modification
G. ZanchinPrimo
;
2016
Abstract
The polymerization of dicyclopentadiene (DCPD, mixture of endo and exo isomers), 9,10- dihydrodicyclopentadiene (H-DCPD), exo-DCPD and endo-DCPD catalyzed by TiCl4/Et2AlCl is studied. Oligomers containing 2,3-enchained units are obtained in good yields. From the endo isomer, at low DCPD/Ti ratio, we obtain a crystalline, stereoregular tetramer having a 2,3-exo-disyndiotactic structure. The results show that the presence of the double bond in the cyclopentene ring, the spatial disposition of the cyclopentene and the oligomerization conditions play a fundamental role to give an unique crystalline material. Hydrogenation and epoxidation of the obtained products is reported as well.
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