Fused ring catalyst and ethylene polymerization process therewit

Details Fused ring catalyst and ethylene polymerization process therewit Fused ring catalyst and ethylene polymerization process therewit

1975-12-29

1977-03-29

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252430, 252431R, 526154, 526170, 526348, 526352, C08F 402, C08F 1002

Patent

active

040150593

ABSTRACT:
Bis(indenyl)- and bis(fluorenyl)-chromium [II] compounds are deposited on activated inorganic oxide supports to provide catalysts which are useful in the presence of hydrogen, alone, or with cyclopentadiene compounds, for the polymerization of ethylene in high yields. These catalysts exhibit good thermal stability and show a unique response to cyclopentadiene compounds which allows production of polymers having a relatively broad range of melt index values.

REFERENCES:
patent: 3806500 (1974-04-01), Karol
F.J. Karol et al., Journal of Polymer Science, Part A1, vol. 10, pp. 2621-2637 (1972).
F.J. Karol et al., Journal of Polymer Sciences, Polymer Chemistry Edition, vol. 12, pp. 1549-1558 (1974).

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