Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1982-03-22
1983-06-07
Michl, Paul R.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526127, 526133, 526137, 526150, 526151, C08F 450
Patent
active
043872000
ABSTRACT:
A process for polymerizing olefins employing as a catalyst therefor, the reaction product of (A) the reaction product of (1) the reaction product of (a) an alkyl magnesium compound such as dibutylmagnesium, with (b) an oxygen-containing and/or nitrogen-containing compound such as n-propyl alcohol, or isopropylamine, with (2) a halide source such as titanium tetrachloride or silicon tetrachloride; and (B) a transition metal compound such as titanium tetrachloride and (C) a reducing agent such as triisobutylaluminum. The polymers which are produced in the presence of this catalyst and a cocatalyst such as triethylaluminum have a low catalyst support to transition metal ratio and therefore, the catalyst efficiency based on quantity of polymer per quantity of total catalyst is very high resulting in a polymer having good color and very little, if any, corrosion.
REFERENCES:
patent: 4244838 (1981-01-01), Gessell
patent: 4308369 (1981-12-01), Shipley
patent: 4323665 (1982-04-01), Lowery
Fuentes, Jr. Ricardo
Gessell Donald E.
Gibbs Ronald L.
Carter J. G.
Michl Paul R.
The Dow Chemical Company
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