Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1978-08-24
1981-04-07
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
252429B, 252429C, 526125, 526142, 526144, 526151, 526351, 526352, C08F 466, C08F 1002
Patent
active
042607094
ABSTRACT:
This invention is addressed to catalysts for use in the polymerization of olefins comprising compounds of magnesium and one or more transition metals of groups IVa, Va and VIa, which are at least partially reduced, with the catalysts being prepared by reaction of magnesium, at least one mono-halogenated hydrocarbon and a compound of a transition metal having a valence of at least 4. The catalysts can be used for the polymerization of olefins, such as ethylene, in the low-pressure process.
REFERENCES:
patent: 2927105 (1960-03-01), Nienburg et al.
patent: 2954367 (1960-09-01), Vandenberg
patent: 3101328 (1963-08-01), Edmonds
patent: 3121063 (1964-02-01), Tornquist
patent: 3299026 (1967-01-01), Lang
Rochow et al., The Chemistry of Organo Metallic Compounds, J. Wiley & Sons, N.Y. (1957) pp. 84-86.
Durand Daniel C.
Mangin Pierre M. F.
Naphthachimie
Smith Edward J.
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