John C Halko, 576347 NE Pear St, Suquamish, WA 98392

5908498, Jun 1, 1999

Mar 31, 1998

9/052431

James W. Kauffman - Edmond OK
Phillip M. Story - Yukon OK
John E. Halko - Okarche OK

Kerr-McGee Chemical LLC - Oklahoma City OK

C09C 136

106437

A process for preparing a low-dusting, free-flowing pigment which has not been subjected to any micronizing treatment comprising the steps of providing an inorganic pigment material; providing a source of water; forming a fine, well dispersed slurry of the pigment and water; milling the slurry; depositing a treating agent having the formula ROOCCHSO. sub. 3 MCH. sub. 2 COOR' wherein R and R' are monovalent alkyl radicals having from about 2 to about 20 carbon atoms, and M is a metallic monovalent cation on the slurried milled pigment; and drying the pigment material having a treating agent deposited thereon. The invention also provides the free-flowing pigments produced by this process.

4406663, Sep 27, 1983

Mar 9, 1981

6/241935

Roger A. Baldwin - Warr Acres OK
John E. Halko - Okarche OK
Ron S. Henke - Oklahoma City OK

Kerr-McGee Corporation - Oklahoma City OK

C10L 132

44 51

A process for producing a flowable concentrated aqueous slurry of insoluble coal products from a dilute slurry of insoluble coal products. The dilute slurry is concentrated to form a nonflowable concentrate having a solids level in excess of 65 weight percent. The nonflowable concentrate is introduced into a mixing zone together with an alkaline agent, surfactant and diluent wherein they are admixed to form a flowable concentrated aqueous slurry having a solids level in excess of 60 weight percent. Sufficient alkaline agent is present to provide a pH level of the slurry above about 9. The surfactant comprises at least about 0. 01 percent by weight of the solids present. The diluent can comprise any suitable aqueous stream that does not adversely react with the insoluble coal products, alkaline agent or surfactant. The concentrated aqueous slurry is easily flowable from the mixing zone.

5332433, Jul 26, 1994

Nov 24, 1993

8/156743

Phillip Story - Yukon OK
Kelly A. Green - Edmond OK
John E. Halko - Okarche OK

Kerr-McGee Chemical Corporation - Oklahoma City OK

C09C 136

106442

A titanium dioxide production method, a novel titanium dioxide product produced by the inventive titanium dioxide production method, a method for producing a plastic product using the novel titanium dioxide product, and a novel plastic product formed by the inventive plastic product production method. The inventive titanium dioxide production method comprises the steps of: (a) forming a mixture comprising a titanium dioxide material in a liquid medium; (b) wet milling the titanium dioxide material in the liquid medium; (c) after step (b), reducing the pH of the mixture to a value not exceeding 4. 0; (d) after step (c), adding an effective amount of a base to the mixture to cause the titanium dioxide material to flocculate; (e) removing the flocculated titanium dioxide material from the mixture; and (f) washing the titanium dioxide material. The titanium dioxide material used in step (a) is an agglomerated titanium dioxide material which has been produced by a reaction process. Other than any inorganic oxides formed in the reaction process along with the titanium dioxide material, the titanium dioxide material used in step (a) has substantially no inorganic oxides deposited thereon.