Rajindar K Kochhar

40163440, Apr 5, 1977

Feb 4, 1976

5/655197

Rajindar K. Kochhar - Katy TX
Robert J. Rowatt - Orange TX

Gulf Research & Development Company - Pittsburgh PA

C08F 466
C08F 402
C08F 1000

526124

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.

42513898, Feb 17, 1981

Jan 14, 1980

6/112026

Ronald E. Gilbert - Katy TX
Rajindar K. Kochhar - Katy TX

Gulf Oil Corporation - Pittsburgh PA

C08F 464

252429B

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.

40618471, Dec 6, 1977

Apr 12, 1973

5/350557

Richard H. Hughes - Overland Park KS
Donald R. Jamieson - Merriam KS
Rajindar K. Kochhar - Katy TX

Gulf Research & Development Company - Pittsburgh PA

C08F 830
C08F 844

526 49

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.

43306527, May 18, 1982

Jul 10, 1980

6/168835

Ronald E. Gilbert - Katy TX
Rajindar K. Kochhar - Katy TX

Gulf Oil Corporation - Pittsburgh PA

C08F 464
C08F 1006

526138

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.

40215997, May 3, 1977

Jan 9, 1976

5/647755

Rajindar K. Kochhar - Katy TX
Robert J. Rowatt - Orange TX

Gulf Research & Development Company - Pittsburgh PA

C08F 402
C08F 1002

526124

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.