Selection of polymerization catalysts and apparatus for...

Details Selection of polymerization catalysts and apparatus for... Selection of polymerization catalysts and apparatus for...

2003-09-16

2008-12-23

Teskin, Fred M (Department: 1796)

Chemistry: analytical and immunological testing

Testing of catalyst

C506S011000, C506S012000, C422S131000, C422S068100

Reexamination Certificate

active

07468279

ABSTRACT:
In a method of selecting polymerization catalysts, in particular Phillips catalysts for the polymerization of olefins, from a multiplicity of catalysts on the basis of their catalytic properties, a multiplicity of catalyst precursors or catalyst supports are converted in parallel into polymerization catalysts in a pretreatment step in an array of reactors, where the pretreatment comprises at least one thermal treatment step at from 250 to 1200° C. Furthermore, at least one starting material is converted with the aid of the respective polymerization catalysts under prescribed polymerization conditions into at least one polymer product in a polymerization step and, finally, analysis of the polymer product or products is carried out to determine its composition and/or chosen properties. This makes it possible to carry out a thermal pretreatment of polymerization catalysts quickly under defined conditions which can be varied.

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M. P. McDaniel, “Chromium Catalysts for Ethylene Polymerization,”Advances in Catalysis, vol. 33, p. 49-95.
M. P. McDaniel, “Chromium Catalysts for Ethylene Polymerization,”Advances in Catalysis, Academic Press, vol. 33, p. 48-98 (Dec. 1985).

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