[특허]Fast activating catalyst

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01J-021/00 C08F-004/24 C08F-004/06
출원번호	US-0963530 (2007-12-21)
등록번호	US-8183173 (2012-05-22)
발명자 / 주소	McDaniel, Max P. Benham, Elizabeth A. Cymbaluk, Ted Neil, George
출원인 / 주소	Chevron Phillips Chemical Company LP
대리인 / 주소	Conley Rose, P.C.
인용정보	피인용 횟수 : 4 인용 특허 : 30

초록 ▼

A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to pr

A method of preparing a catalyst comprising aging a silica support in an alkaline solution to produce an alkaline aged silica support, removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support, and activating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value and wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours. A method of preparing a polymer comprising alkaline aging a silica support material, adding chromium to the silica support material prior to the alkaline aging, after the alkaline aging, or both to form a chromium-silica support, rapidly activating the chromium-silica support to produce an activated olefin polymerization catalyst, contacting the activated olefin polymerization catalyst with at least one monomer in a reaction zone under conditions suitable to produce a polymer, and recovering the polymer.

대표청구항 ▼

1. A method of preparing a catalyst comprising: aging a silica support in an alkaline solution to produce an alkaline aged silica support;removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support; andactivating the silica support to

1. A method of preparing a catalyst comprising: aging a silica support in an alkaline solution to produce an alkaline aged silica support;removing at least a portion of the alkaline solution from the alkaline aged silica support to produce a dried silica support; andactivating the silica support to produce a catalyst composition, wherein alkaline aging lowers the surface area of the silica support to less than about 50% of the original value, wherein the silica support has a surface area of less than about 300 m2/g, wherein activation of the silica support is carried out in batches of equal to or greater than about 500 lbs for a time period of less than about 8 hours, and wherein a chromium conversion to chromium (VI) is from about 0.35 wt. % to about 0.65 wt. % based on the total weight of the catalyst when the chromium level is from about 0.2 wt. % to about 2 wt. %. 2. The method of claim 1 wherein the aging is carried out at a temperature of from about 60° C. to about 90° C. 3. The method of claim 1 wherein the alkaline solution has a pH of from about 8 to about 13. 4. The method of claim 1 wherein the aging is carried out for a time period of from about 1 to about 24 hours. 5. The method of claim 1 wherein removing at least a portion of the alkaline solution further comprises contacting the alkaline aged support with an organic solvent, thermally drying the alkaline aged support, spray drying the alkaline aged support or combinations thereof. 6. The method of claim 1 wherein commercially activating the alkaline aged composition further comprises heating the composition to a temperature equal to or greater than about 700° C. 7. The method of claim 1 wherein the silica support further comprises titania. 8. The method of claim 1 further comprising adding chromium to the silica support prior to aging, during aging, after aging, or combinations thereof. 9. A method of preparing a polymer comprising: alkaline aging a silica support material;adding chromium to the silica support material prior to the alkaline aging, after the alkaline aging, or both to form a chromium-silica support;rapidly activating the chromium-silica support to produce an activated olefin polymerization catalyst, wherein the chromium-silica support is rapidly activated in batches of equal to or greater than about 500 pounds, wherein activation of the chromium-silica support occurs in less than about 8 hours, wherein the silica support has a surface area of less than about 300 m2/g;contacting the activated olefin polymerization catalyst with at least one monomer in a reaction zone under conditions suitable to produce a polymer, and wherein the chromium conversion to chromium (VI) is from about 0.35 wt. % to about 0.65 wt. % based on the total weight of the catalyst when the chromium level is from about 0.2 wt. % to about 2 wt. %; andrecovering the polymer. 10. The method of claim 9 wherein the silica support material is alkaline aged by contact with a solution having a pH of from about 8 to about 13 at a temperature of from about 60° C. to about 90° C. for a time period of from about 1 to about 24 hours. 11. The method of claim 9 wherein the silica support further comprises titania. 12. The method of claim 9 wherein alkaline aging lowers the surface area of the silica support to less than about 50% of its original value. 13. The method of claim 9 wherein the polymer comprises polyethylene having a density of greater than about 0.945 g/cc. 14. The method of claim 13 wherein the polymer has a melt index of from about 1 to about 10. 15. The method of claim 14 wherein the polymer has a CY-a value that is less than about 0.2. 16. The method of claim 15 further comprising blow molding the polyethylene. 17. A method of preparing a polymer comprising: alkaline aging a silica support material;adding chromium to the silica support material prior to the alkaline aging, after the alkaline aging, or both to form a chromium-silica support; andrapidly activating the chromium-silica support to produce an activated olefin polymerization catalyst, wherein rapidly activating chromium-silica support comprises heating to a temperature of equal to or greater than about 700° C. for a time period of less than about 8 hours, wherein the chromium-silica support is rapidly activated in batches of equal to or greater than about 500 pounds, wherein the silica support has a surface area of less than about 300 m2/g, and wherein the chromium conversion to chromium (VI) is from about 0.35 wt. % to about 0.65 wt. % based on the total weight of the catalyst when the chromium level is from about 0.2 wt. % to about 2 wt. %. 18. The method of claim 17 wherein the silica support material is alkaline aged by contact with a solution having a pH of from about 8 to about 13 at a temperature of from about 60° C. to about 90° C. for a time period of from about 1 to about 24 hours. 19. The method of claim 17 wherein the silica support further comprises titania. 20. The method of claim 17 wherein alkaline aging lowers surface area of the silica support to less than about 50% of its original value. 21. The method of claim 1 wherein the catalyst composition has a pore diameter of from about 50 Å to about 400 Å. 22. The method of claim 1 wherein the catalyst composition has a pore volume of from about 1 cc/g to about 3 cc/g. 23. The method of claim 1 wherein the activation is carried out for a time period of less than about 1 hour. 24. The method of claim 9 wherein the polymer has a die swell of from about 5% to about 50% when compared to an otherwise similar catalyst prepared in the absence an alkaline treatment. 25. The method of claim 1, wherein the temperature is ramped at a rate of about 2.5° F. per minute during activation of the catalyst.

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이 특허에 인용된 특허 (30) 인용/피인용 타임라인 분석

Witt Donald R. (Bartlesville OK), Aging of chromium-containing gel at high pH.
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Hottovy John D. (Bartlesville OK) Lawrence Frederick C. (Bartlesville OK) Lowe Barry W. (Bartlesville OK) Fangmeier James S. (Bartlesville OK), Apparatus and method for producing ethylene polymer.
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Rush Elton E. (Bartlesville OK), Catalyst activation.
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Roger,Scott T.; Towles,Thomas W.; Speca,Anthony N.; Katzen,Stanley J., Catalyst activation and resins therefrom.
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Lin,Zerong, Catalyst system and process.
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Hoff Raymond E. (Palatine IL) Pullukat Thomas J. (Hoffman Estates IL) Shida Mitsuzo (Barrington IL), Catalyst, method and polymerization processes.
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Badley Rickey D. (Dewey OK) Rollmann Kent W. (Searcy AR) McDaniel Max P. (Bartlesville OK), Chromium catalyst compositions and ethylene polymerization processes therewith.
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Kendrick, James Austin; Towles, Thomas W.; Roger, Scott Thomas, Continuous slurry polymerization process and appparatus.
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Sherk Fred T. (Bartlesville OK) Inkrott Janet L. (Bartlesville OK), Diluent and inert gas recovery from a polymerization process.
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Hottovy John D. ; Burns David H. ; Kufeld Scott E. ; Roetman Timothy ; Vaidyanathan Ragavan, Diluent slip stream to give catalyst wetting agent.
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Hottovy John D. ; Hensley Harvey D. ; Przelomski David J. ; Cymbaluk Teddy H. ; Franklin ; III Robert K. ; Perez Ethelwoldo P., High solids slurry polymerization.
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De Lange, Paulus; Karer, Rainer; Rosendorfer, Philipp; Evertz, Kaspar; Micklitz, Wolfgang; Feindt, Hans-Jacob, Method and apparatus for the continuous treatment of catalyst and catalyst support material.
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Vogels Claude (Lasne BEX) Lerot Luc (Brussels BEX), Method for activating supported chromium oxide catalysts and olefin polymerization process carried out therewith.
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Burns David H. (Houston TX) Martin William E. (Houston TX), Method for controlling removal of polymerization reaction effluent.
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Jenkins ; III John M. (So. Charleston WV) Jones Russell L. (Chapel Hill NC) Jones Thomas M. (So. Charleston WV) Beret Samil (Danville CA), Method for fluidized bed polymerization.
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De Lange, Paulus; Kammerer, Michael; Brauch, Thomas; Evertz, Kaspar; Letzelter, Thomas; Kolle, Peter; Feindt, Hans-Jacob, Method for the discontinuous thermal treatment of catalyst material.
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Katzen,Stanley J.; Speca,Anthony N., Method of preparing a treated support.
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Hsieh John T. T. (Warren NJ) Pruden Ann L. (Bellemead NJ), Modified chromium-containing catalyst composition for polymerizing olefins and method of preparing the catalyst composit.
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Bodart,Philippe; Lonfils,Nicodeme; Debras,Guy, Multimodal polyethylene obtained with multilayer chromium catalyst.
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McDaniel Max P. (Bartlesville OK) Sanbrano John A. (Bartlesville OK) Johnson Marvin M. (Bartlesville OK), Olefin polymerization catalyst.
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Witt Donald R. (Bartlesville OK), Polymerization process utilizing a catalyst prepared by aging of a chromium-containing gel at high pH.
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Hanson Donald O. (Bartlesville OK), Process and apparatus for separating diluents from solid polymers utilizing a two-stage flash and a cyclone separator.
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DeChellis Marc L. (Houston TX) Griffin John R. (Baytown TX), Process for polymerizing monomers in fluidized beds.
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Griffin John R. (Baytown TX) DeChellis Marc L. (Houston TX), Process for polymerizing monomers in fluidized beds.
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Olivier Lhost BE; Nicole Dewaele BE; Martine Frederickx BE; Joel Kaisin BE, Process for production of ethylene polymers.
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McDaniel Max P. (Bartlesville OK) Welch Melvin B. (Bartlesville OK), Reduction and reoxidation of cogel or self-reduced catalyst.
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McDaniel, Max P., Silica-titania cogel from two-step hydrolysis.
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Debras Guy,BEX ; Dath Jean-Pierre,BEX, Titanated chromium-based catalysts to produce polyethylene.
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Guy Debras BE; Jean-Pierre Dath BE, Titanated chromium-based catalysts to produce polyethylene.
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Hawley Gil R. (Bartlesville OK), Titanium impregnated silica-chromium catalysts.
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이 특허를 인용한 특허 (4) 인용/피인용 타임라인 분석

Yu, Youlu; Schwerdtfeger, Eric D.; McDaniel, Max P.; Solenberger, Alan L.; Clear, Kathy S., Long chain branched polymers and methods of making same.
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McDaniel, Max P.; Schwerdtfeger, Eric D.; Praetorius, Jeremy M.; Solenberger, Alan L.; Clear, Kathy S., Methods of preparing a catalyst.
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McDaniel, Max P.; Collins, Kathy S.; Schwerdtfeger, Eric D.; Solenberger, Alan L., Polymerization catalysts and polymers.
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