Gulf Research & Development Company

Gulf Oil Corporation

Rajindar K Kochhar

Robert J Rowatt

Ronald E Gilbert

Donald R Jamieson

Richard H Hughes

Propylene is polymerized with an improved titanium chloride catalyst. The improved titanium chloride catalyst is prepared by treating TiCl.sub.4 with an aluminum alkyl and treating the resulting titanium chloride catalyst with carbon dioxide and a Lewis base, such as di(n-butyl) ether in a hydrocarbon medium at an elevated temperature.

Process for polymerizing propylene with an improved titanium chloride

Titanium chloride catalysts having improved activity to polymerize propylene are prepared by treating TiCl.sub.4 with an aluminum alkyl and treating the resulting titanium chloride catalysts with carbon dioxide and a Lewis base such as di(n-butyl) ether at an elevated temperature.

Titanium chloride propylene polymerization catalyst and process for

Without changing the physical form of the ethylene polymer, the pendant carboxylate salt groups of an ethylene polymer are converted to the acid form by introducing an article of manufacture having at least a surface comprising an ethylene polymer containing pendant metallic carboxylate salt groups into an aqueous medium containing dissolved ammonia.

Ethylene polymer acidification process

Ziegler-type catalysts of enhanced activity are produced by (1) suspending a finely divided polymeric support such as polyethylene in an alkanol solution of a magnesium compound such as magnesium chloride, (2) vaporizing the alkanol to deposit the magnesium compound on the support, (3) treating the magnesium compound impregnated support with a transition metal halide such as titanium tetrachloride in a hydrocarbon medium, and (4) reacting the product of (3) with an organometallic compound such as triethyl aluminum. The catalysts are particularly useful in polymerizing mono-1 olefins such as ethylene.

Olefin polymerization process and catalyst

In mono 1-olefin polymerization processes employing a magnesium compound supported Ziegler-type catalyst; the improvement which comprises treating the magnesium compound support with an organic peroxide prior to impregnating the support with a transition metal halide catalyst component.

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Katy, TX, United States of America

Rajindar K Kochhar