| 摘要 |
Process for the preparation of ethylene copolymers comprising the copolymerization of ethylene with olefins CH<SUB>2</SUB>-CHR, in which R is a hyrdocarbyl radical with 1-12 carbon atoms carried out in the presence of a catalyst comprising (i) a solid catalyst component comprising Mg, Ti, halogen and specific 1,3-diethers of formula (I) in which R is a C<SUB>1</SUB>-C<SUB>10 </SUB>hydrocarbon group, R<SUB>1 </SUB>is methyl or ethyl, optionally containing a heteroatom, and R<SUB>2 </SUB>is a C4-C12 linear alkyl optionally containing a heteroatom, and (ii) an organo-Al compound. The obtained copolymers are endowed with good comonomer distribution.
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