1
Gregory G Hlatky, Howard W Turner: Catalyst system of enhanced productivity. Exxon Chemical Patents, B C Cadenhead, M B Kurtzman, M S Spiering, October 6, 1992: US05153157 (383 worldwide citation)

This invention relates to catalyst systems, and a method for using such system, for the enhanced production of homo and copolymer products of olefin, diolefin and/or acetylenically unsaturated monomers. This invention catalyst system comprises a Group III-A element compound for improving the product ...


2
Howard C Welborn Jr, Charles S Speed: High pressure, high temperature polymerization of ethylene. Exxon Chemical Patents, B C Cadenhead, M B Kurtzman, January 28, 1992: US05084534 (144 worldwide citation)

A process for polymerizing or copolymerizing ethylene, either alone or in combination with other olefins, comprising contacting said ethylene or alpha-olefin, either alone or in combination with other olefins, with a catalyst comprising a cyclopentadienyl-transition metal compound and an alumoxane c ...


3
Albert T Watson, Robert L Hull: Polypropylene impact blends having improved optical properties. Exxon Research & Engineering Co, B C Cadenhead, Myron B Kurtzman, September 12, 1978: US04113806 (25 worldwide citation)

A polypropylene impact blend having a good overall balance of mechanical properties, particularly high impact strength, and surprisingly high clarity is disclosed which includes about 70 to about 90% by weight of a polypropylene, about 1 to about 18% by weight of a low density polyethylene and about ...


4
Peter M Robinson, Nguyen Van Det: Bi-phase initiator system for water-in-oil emulsion polymers. Exxon Chemical Patents, B C Cadenhead, April 19, 1988: US04739008 (19 worldwide citation)

Water-in-oil emulsions of monomers which form water-soluble polymers are polymerized in the presence of a biphase initiator system containing both an oil-soluble initiator and a water-soluble initiator or activator or alternatively a water-soluble initiator and an oil-soluble activator which results ...


5
Terrence Huff: High impact melt-flowable dual continuum melt mixed polymer blends of polypropylene, polyethylene, and ethylene-propylene rubber. Exxon Research & Engineering Co, B C Cadenhead, M B Kurtzman, September 9, 1980: US04221882 (15 worldwide citation)

Melt mixed, melt-flowable blends of polypropylene, at least about 30% polyethylene and from about 4 to about 11% ethylene-propylene copolymer rubber, and method for making same, are disclosed. Such blends possess higher low temperature Izod and Gardner impact strength than conventional impact polypr ...


6
Hiroshi Ueno, Masafumi Imai, Naomi Inabe, Makoto Yoda, Shozo Wada: Catalyst component for use in the polymerization of .alpha.-olefins and a method of using the same. Toa Nenryo Kogyo Kabushiki Kaisha, B C Cadenhead, M B Kurtzman, December 30, 1980: US04242231 (11 worldwide citation)

A supported titanium catalyst is produced by cogrinding, in combination, a magnesium halide, tetravalent titanium halide, organic acid ester, and an organic halogen compound. The resulting supported titanium catalyst, when employed as a titanium component with an organo aluminum catalyst component f ...


7
Harry J Wristers: Shaping and sizing of catalysts. Exxon Research & Engineering Co, B C Cadenhead, M B Kurtzman, September 23, 1980: US04224185 (10 worldwide citation)

Solid catalyst particles are made into a form and shape that is easier to handle, without changing their surface area or adversely affecting their activity by "matting" the catalyst particles with a fibrillatable polymer by mechanical shearing action and subsequently shaping the "mat", followed by c ...


8
Hiroshi Ueno, Masafumi Imai, Naomi Inaba, Makoto Yoda, Shozo Wada: Catalyst component for use in the polymerization of .alpha.-olefins and a method of using the same. Toa Nenryo Kogyo Kabushiki Kaisha, B C Cadenhead, M B Kurtzman, December 30, 1980: US04242230 (10 worldwide citation)

A supported titanium catalyst, adaptable for use in the stereoregular polymerization of .alpha.-olefins, is produced by treating a supported titanium-containing solid, obtained by cogrinding a magnesium halide, tetravalent titanium halide and organic acid ester, with a hydrocarbon, organo halogen co ...


9
Darrell W Brownawell, Antonio Gutierrez, Stanley J Brois, Donald F Jacques, Gary L Behelfer, Thomas M Ferrell, Stephan Ilnyckyj: Method for inhibiting deposit formation in structures confining hydrocarbon fluids. Exxon Research & Engineering Co, B C Cadenhead, February 11, 1986: US04569750 (8 worldwide citation)

Deposit formation on the interior surfaces of structures confining heated hydrocarbon fluids such as refinery units, particularly preheating stages associated with process units such as distillation units, hydrotreaters and thermal crackers, is inhibited by incorporating in the feed stock a small pe ...


10
Hiroshi Ueno, Masafumi Imai, Naomi Inaba, Makoto Yoda, Shozo Wada: Catalyst component for use in the polymerization of .alpha.-olefins and a method of using the same. Toa Nenryo Kogyo Kabushiki Kaisha, B C Cadenhead, M B Kurtzman, January 20, 1981: US04246136 (7 worldwide citation)

A supported titanium catalyst is produced by cogrinding, in combination, a magnesium halide, tetravalent titanium halide, organic acid ester, and a halogen compound selected from organic halogen compounds and halogen-containing compounds of Group IVa elements of the Periodic Table except carbon, and ...