Stanley J Katzen

41502094, Apr 17, 1979

Mar 6, 1978

5/883566

Stanley J. Katzen - Cincinnati OH
Louis J. Rekers - Wyoming OH

National Petro Chemicals Corporation - New York NY

C08F 424
C08F 452
C08F 1000
C08F 1002

526105

Catalysts, especially for olefin polymerization are prepared by coating an aluminum compound on a selected high pore volume silica gel, and calcining the support at temperatures of from about 200. degree. to 2000. degree. F. The preferred catalyst is prepared with an inorganic support material as aforesaid, thereafter depositing an organophosphoryl chromium compound thereon, and activating the thus-treated support by heating in a non-reducing, preferably oxygen-containing, atmosphere at temperatures of from about 800. degree. to 2000. degree. F. The activated, supported catalyst composition may, but need not necessarily, be combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.

42607060, Apr 7, 1981

Jun 21, 1979

6/050728

Louis J. Rekers - Wyoming OH
Stanley J. Katzen - Cincinnati OH
Jerome H. Krekeler - Cincinnati OH

National Petro Chemicals Corp. - New York NY

C08F 478

526100

Olefin polymerization catalysts are prepared by depositing an organophosphoryl chromium product and an aluminum acetyl acetonate on an inorganic support material, and heating the support material in a non-reducing atmosphere at a temperature above about 300. degree. C. up to the decomposition temperature of the support material.

39843513, Oct 5, 1976

Mar 14, 1975

5/558504

Louis J. Rekers - Wyoming OH
Stanley J. Katzen - Cincinnati OH
Jerome H. Krekeler - Cincinnati OH

National Petro Chemicals Corporation - New York NY

C08F 478

252430

Olefin polymerization catalysts are prepared by depositing a chromium compound and an aluminum compound on an inorganic support material and heating the support material in a non-reducing atmosphere at a temperature above about 300. degree. C up to the decomposition temperature of the support material. The supported chromium and aluminum compound is then combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.

42347092, Nov 18, 1980

May 7, 1976

5/684042

Louis J. Rekers - Wyoming OH
Stanley J. Katzen - Cincinnati OH

National Petro Chemicals Corporation - New York NY

C08F 422
C08F 478

526100

Supported catalyst compositions incorporating preformed materials comprising the reaction product of organophosphorus compounds such as the organophosphates and organophosphites with chromium trioxide, wherein the organic moiety is a hydrocarbon radical, e. g. , alkyl, aralkyl, aryl, cycloalkyl, or the like or combinations thereof. Typical supports constitute an inorganic material of high surface area, especially a high pore volume (>1. 96 cc/g) silica xerogel. Catalytically promoted polymerizations of 1-olefins proceed efficiently to products of specially adapted utility for molding, and particularly the production of blow molded articles. The polymerization activity of the catalyst compositions is promoted by heating in a dry, oxygen containing atmosphere. The catalysts are utilized alone or in conjunction with other catalytic ingredients such as organometallic and/or organo non-metallic reducing agents.

42529263, Feb 24, 1981

Aug 7, 1978

5/931598

Stanley J. Katzen - Cincinnati OH
Louis J. Rekers - Wyoming OH

National Petro Chemicals Corp. - New York NY

C08F 462
C08F 1000

526100

Olefins are polymerized in the presence of catalysts prepared by combining a heat activated supported organophosphoryl chromium compound with an alkyl borane which has been pretreated with hydrogen.

41001044, Jul 11, 1978

Jan 13, 1977

5/759213

Stanley J. Katzen - Cincinnati OH
Louis J. Rekers - Wyoming OH

National Petro Chemicals Corporation - New York NY

C08F 478
B01J 3114
B01J 2716
B01J 2112

252428

Catalysts, especially for olefin polymerization are prepared by coating an aluminum compound on a selected high pore volume silica gel, and calcining the support at temperatures of from about 200. degree. to 2000. degree. F. The preferred catalyst is prepared with an inorganic support material as aforesaid, thereafter depositing an organophosphoryl chromium compound thereon, and activating the thus-treated support by heating in a non-reducing, preferably oxygen-containing, atmosphere at temperatures of from about 800. degree. to 2000. degree. F. The activated, supported catalyst composition may, but need not necessarily, be combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins. BACKGROUND OF THE INVENTION The modification of silica gels for catalytic activity is known as discussed in Burwell, Chemtech, pp. 370-377 (1974).

44043406, Sep 13, 1983

Dec 24, 1982

6/334300

Anthony N. Speca - Cincinnati OH
Stanley J. Katzen - Cincinnati OH
Louis J. Rekers - Wyoming OH

National Petro Chemicals Corporation - New York NY

C08F 402
C08F 416
C08F 424

526 97

Olefin polymerization catalysts comprised of a supported adduct of a trialkyl-dialkylphosphato-titanate and chromium trioxide, processes for their preparation and polymerization processes employing the same.

42909147, Sep 22, 1981

Jun 16, 1980

6/159992

Stanley J. Katzen - Cincinnati OH
Louis J. Rekers - Wyoming OH

National Petro Chemicals Corp. - New York NY

C08F 478
B01J 3114
B01J 2112

252428

Catalysts, especially for olefin polymerization are prepared by coating an aluminum compound on a selected high pore volume silica gel, and calcining the support at temperatures of from about 200. degree. to 2000. degree. F. The preferred catalyst is prepared with an inorganic support material as aforesaid, thereafter depositing an organophosphoryl chromium compound thereon, and activating the thus-treated support by heating in a non-reducing, preferably oxygen-containing, atmosphere at temperatures of from about 800. degree. to 2000. degree. F. The activated, supported catalyst composition may, but need not necessarily, be combined with a metallic and/or non-metallic reducing agent, to provide a catalyst system useful in the polymerization of 1-olefins.