03932307 is referenced by 33 patents and cites 5 patents.

There are disclosed olefin polymerization catalysts based on tetra(neophyl) zirconium and its reaction products with surface-hydroxylated oxides of metals of Groups II(a), III(a), IV(a) and IV(b) of the Periodic Table of the Elements, processes for their preparation, and processes for the polymerization of olefinic monomers employing such catalysts. Neophyl zirconium aluminate supported on alumina is disclosed as the preferred, most active catalyst. The polyolefins produced are linear high polymers of high crystallinity such as polyethylene and isotactic polypropylene. Diolefins are converted into rubber by use of the process employing the catalyst. Ethylene-propylene copolymer rubbers can also be produced by use of the catalysts.

Title
Tetra(neophyl) zirconium and its use in process for the polymerization of olefins
Application Number
5/471813
Publication Number
3932307
Application Date
May 20, 1974
Publication Date
January 13, 1976
Inventor
Robert Alton Setterquist
Wilmington
DE, US
Assignee
E I Du Pont de Nemours and Company
DE, US
IPC
B01J 31/12
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