PROCEDIMIENTO PARA PREPARAR COPOLIMEROS DE ETILENO, PROPI- LENO, DICICLOPENTADIENO Y ALQUIL-TRICICLO (6,2,1,02,7) 4,9- UN-DECADIENOS.

摘要

1278723 Copolymers containing non-conjugated dienes MONTECATINI EDISON SpA 10 April 1971 [14 April 1969] 17045/70 Heading C3P Vulcanizable, unsaturated, high molecular weight copolymers of ethylene, propylene, dicyclopentadiene and an alkyltricyclo(6,2,1,02,7)- 4,9-undecadiene, may be prepared by copolymerizing a mixture of the monomers with a catalyst comprising an organometallic compound or hydride of beryllium, aluminium or lithiumaluminium, e.g. diethyl aluminium monochloride, and a vanadium compound which is soluble in hydrocarbons e.g. vanadyl diacetyl-acetonate, optionally in the presence of a solvent. In the examples the tricycloundeadiene compounds used are 4-methyl-, and 4,5-dimethyltricyclo- (6,2,1,02,7)4,9-undecaciene and diethyl zinc is present as a molecular weight regulator. The copolymers may be vulcanized using conventional recipes.