Polymerization process

Details Polymerization process Polymerization process

1975-03-11

1977-01-11

Smith, Edward J.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526123, 526350, C08F 402, C08F 1002

Patent

active

040028143

ABSTRACT:
Ethylene is copolymerized with one or more mono .alpha.-olefins, especially butene and/or hexene, using as catayst a Group IVA metal hydrocarbyl compound supported on particulate alumina, the purity ratio (i.e. the molar ratio of Group IVA metal to Group I to III metal) of the said compound being at least 100/1 and, preferably, 500/1. By using these very pure compounds, especially in the case of zirconium tetrabenzyl, the incorporation of co-monomer in the copolymer product may be enhanced.

REFERENCES:
patent: 3432530 (1969-03-01), Wilke
patent: 3436383 (1969-04-01), O'Brien et al.
patent: 3654254 (1972-04-01), Job et al.
patent: 3681317 (1972-08-01), Pioli et al.
patent: 3840508 (1974-10-01), Ballard et al.
patent: 3855258 (1974-12-01), Pioli

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