Process for the preparation of ethylene copolymers

Details Process for the preparation of ethylene copolymers Process for the preparation of ethylene copolymers

2008-05-13

2008-05-13

Choi, Ling-Sui (Department: 1713)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C526S348300, C526S124200, C526S124300

Reexamination Certificate

active

10503104

ABSTRACT:
Process for the preparation of ethylene copolymers comprising the copolymerization of ethylene with olefins CH2═CHR, in which R is a hydrocarbyl 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 C1-C10hydrocarbon group, R1is methyl or ethyl, optionally containing a heteroatom, and R2is 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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M. Kioka et al., “Preparation of low-crystalline or noncrystalline polyolefins,”Chemical Abstracts Service, STN, Database accession No. 116:215118; XP002257083, date.

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