Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1978-09-01
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...
526351, 526906, C08F 402, C08F 1006
Patent
active
042607086
ABSTRACT:
A catalyst system is made up of a catalyst and a cocatalyst. The catalyst component comprises a magnesium chloride support, a titanium trichloride, an aluminum trichloride and an organic phosphite. The cocatalyst comprises an organoaluminum compound. Exemplary of such a system is a MgCl.sub.2 supported TiCl.sub.3.1/3AlCl.sub.3 plus triphenyl phosphite as the catalyst and triethylaluminum plus diethylaluminum chloride and ethyl anisate as the cocatalyst. Such catalyst systems give both high productivity and low solubles in the polymerization of propylene. For ethylene polymerization, the cocatalyst can simply be triethylaluminum.
REFERENCES:
patent: 4013823 (1977-03-01), Longi et al.
patent: 4107412 (1978-08-01), Welch
Phillips Petroleum Company
Smith Edward J.
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