Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1980-04-14
1982-04-06
Smith, Edward J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
526150, 526151, 526352, C08F 402, C08F 1000
Patent
active
043236650
ABSTRACT:
.alpha.-Olfins, particularly higher olefins, are polymerized in the presence of a catalyst prepared by reacting (A) tetravalent tianium compounds such as titanium tetraalkoxide, (B) an organoaluminum compound, (C) an organomagnesium component such as a hydrocarbon soluble complex of dialkyl magnesium and an organoaluminum compound such as triethyl aluminum and, (D) as a halide source, a tetravalent tin compound such as tin tetrachloride. Polymers prepared by this process provide higher efficiencies than polymers prepared from a process utilizing catalysts employing HCl as the halide source.
REFERENCES:
patent: 4071672 (1978-01-01), Kashiwa
patent: 4085276 (1978-04-01), Toyota et al.
patent: 4104198 (1978-08-01), May et al.
patent: 4115319 (1978-09-01), Scata et al.
patent: 4120820 (1978-10-01), Birkelbach
Birkelbach Donald F.
Lowery, Jr. Kirby
Shipley Randall S.
Carter J. G.
Smith Edward J.
The Dow Chemical Co.
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