IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0699533
(2015-04-29)
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등록번호 |
US-9587048
(2017-03-07)
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발명자
/ 주소 |
- Praetorius, Jeremy M.
- Schwerdtfeger, Eric D.
- McDaniel, Max P.
- Cymbaluk, Ted H.
- Boxell, Connor D.
- Collins, Kathy S.
- Solenberger, Alan L.
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출원인 / 주소 |
- Chevron Phillips Chemical Company LP
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
1 인용 특허 :
39 |
초록
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A method comprising a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support; b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support; c) subsequent to b), contacting the titanated
A method comprising a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support; b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support; c) subsequent to b), contacting the titanated support with a polyol to form a polyol associated titanated support (PATS); d) contacting at least one of the silica support, pre-calcined silica support, the titanated support, the PATS, or combinations thereof with a chromium-containing compound to form a polymerization catalyst precursor; e) drying the polymerization catalyst precursor to form a dried polymerization catalyst precursor; and f) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor.
대표청구항
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1. A method comprising: a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support;b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support;c) subsequent to b), contacting the titanate
1. A method comprising: a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support;b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support;c) subsequent to b), contacting the titanated support with a polyol to form a polyol associated titanated support (PATS);d) contacting at least one of the silica support, pre-calcined silica support, the titanated support, the PATS, or combinations thereof with a chromium-containing compound to form a polymerization catalyst precursor;e) drying the polymerization catalyst precursor to form a dried polymerization catalyst precursor; andf) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor. 2. The method of claim 1 wherein the polyol comprises ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, tripropylene glycol, polyethylene glycols with a molecular weight of from 106 to 1000, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, neopentyl glycol, 1,2-hexanediol, 1,6-hexanediol, 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1,2-octanediol, 1,8-octanediol, 1,2-decanediol, 1,10-decanediol, glycerol, 2,2-dimethylolpropane, trimethylolethane, trimethylolpropane, pentaerythritol, dipentaerythritol, sorbitol, 1,2,4-butanediol, 2,2,4-trimethyl-1,3-pentanediol, 1-phenyl-1,2-ethanediol, 1,2-benzenediol (pyrocatechol), 1,3-benzenediol (resorcinol), 1,4-benzenediol, methyl catechol, methyl resorcinol, 1,2,4-benzenetriol, 2-hydroxybenzylalcohol, 3-hydroxybenzylalcohol, 4-hydroxybenzylalcohol, 3,5-dihydroxybenzylalcohol, 1,2-benzenedimethanol, 1,3-benzenedimethanol, 1,4-benzenedimethanol, 2-(2-hydroxyphenyl)ethanol, 2-(3-hydroxyphenyl)ethanol, 2-(4-hydroxyphenyl)ethanol, 2-phenyl-1,2-propanediol, bisphenol A (2,2-di(4-hydroxyphenyl)propane), bisphenol F (bis(4-hydroxyphenyl)methane), bisphenol S (4,4′-dihydroxydiphenylsulfone), bisphenol Z (4,4′-cyclohexylidenebisphenol), bis(2-hydroxyphenyl)methane, or combinations thereof. 3. The method of claim 1 wherein the polyol is present in an amount of from about 0.1 to about 10 molar equivalents per mole of titanium. 4. The method of claim 1 wherein the HRVOC is an alkene compound. 5. The method of claim 4 wherein the alkene compound is propylene. 6. The method of claim 1 wherein an emission of the HRVOC is reduced by from about 50% to about 100% when compared to the emission of the HRVOC from a polymerization catalyst prepared by an otherwise similar process in the absence of the polyol. 7. The method of claim 1 wherein the titanium alkoxide is a titanium tetra-alkoxide. 8. The method of claim 1 wherein the titanium alkoxide comprises titanium isopropoxide. 9. The method of claim 1 wherein the titanium alkoxide is present in an amount of from about 0.1 wt. % to about 10 wt. %. 10. The method of claim 1 wherein the chromium-containing compound is added to the silica support. 11. A method comprising contacting the polymerization catalyst produced by the method of claim 1 with (i) an olefin monomer and (ii) an optional comonomer in a reaction zone under conditions suitable to produce a polymer; and recovering the polymer. 12. The method of claim 11 wherein the olefin monomer comprises ethylene and the polymer comprises polyethylene. 13. The method of claim 11 wherein the reaction zone is a loop reactor. 14. A method comprising: a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support;b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support;c) subsequent to b), contacting the titanated support with a polyol to form a polyol associated titanated support (PATS);d) contacting the PATS with a chromium-containing compound to form a polymerization catalyst precursor;e) drying the polymerization catalyst precursor to form a dried polymerization catalyst precursor; andf) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor. 15. The method of claim 14 wherein the polyol comprises ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, tripropylene glycol, polyethylene glycols with a molecular weight of from 106 to 1000, 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, 1,3-butanediol, 1,4-butanediol, 1,5-pentanediol, neopentyl glycol, 1,2-hexanediol, 1,6-hexanediol, 1,2-cyclohexanediol, 1,4-cyclohexanediol, 1,2-octanediol, 1,8-octanediol, 1,2-decanediol, 1,10-decanediol, glycerol, 2,2-dimethylolpropane, trimethylolethane, trimethylolpropane, pentaerythritol, dipentaerythritol, sorbitol, 1,2,4-butanediol, 2,2,4-trimethyl-1,3-pentanediol, 1-phenyl-1,2-ethanediol, 1,2-benzenediol (pyrocatechol), 1,3-benzenediol (resorcinol), 1,4-benzenediol, methyl catechol, methyl resorcinol, 1,2,4-benzenetriol, 2-hydroxybenzylalcohol, 3-hydroxybenzylalcohol, 4-hydroxybenzylalcohol, 3,5-dihydroxybenzylalcohol, 1,2-benzenedimethanol, 1,3-benzenedimethanol, 1,4-benzenedimethanol, 2-(2-hydroxyphenyl)ethanol, 2-(3-hydroxyphenyl)ethanol, 2-(4-hydroxyphenyl)ethanol, 2-phenyl-1,2-propanediol, bisphenol A (2,2-di(4-hydroxyphenyl)propane), bisphenol F (bis(4-hydroxyphenyl)methane), bisphenol S (4,4′-dihydroxydiphenylsulfone), bisphenol Z (4,4′-cyclohexylidenebisphenol), bis(2-hydroxyphenyl)methane, or combinations thereof. 16. The method of claim 14 wherein the polyol is present in an amount of from about 0.1 to about 10 molar equivalents per mole of titanium. 17. The method of claim 14 wherein the HRVOC is hydrocarbons, aromatic compounds, alcohols, ketones, or combinations thereof. 18. The method of claim 17 wherein HRVOC is propylene. 19. The method of claim 14 wherein an emission of the HRVOC is reduced by from about 50% to about 100% when compared to the emission of the HRVOC from a polymerization catalyst prepared by an otherwise similar process in the absence of the polyol. 20. The method of claim 18 wherein propylene emissions range from about 50 wt. % to about less than 1 wt. % based on the weight percent titanium. 21. The method of claim 8 wherein the titanium isopropoxide is present in an amount of from about 0.1 wt. % to about 10 wt. %. 22. A method comprising: a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support;b) contacting the precalcined silica support with a chromium-containing compound to form a Cr/silica support;c) contacting the Cr/silica support with a titanium alkoxide to form a titanated support;d) subsequent to c), contacting the titanated support with a polyol to form a polymerization catalyst precursor;e) drying the polymerization catalyst precursor to form a dried polymerization catalyst precursor; andf) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor. 23. A method comprising: a) calcining a silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined silica support;b) contacting the precalcined silica support with a titanium alkoxide to form a titanated support;c) contacting the titanated support with a chromium-containing compound to form a Cr/Ti support;d) subsequent to c), contacting the Cr/Ti support with a polyol to form a polymerization catalyst precursor;e) drying the polymerization catalyst precursor to form a dried polymerization catalyst precursor; andf) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor. 24. A method comprising: a) calcining a Cr/silica support at temperature in the range of from about 100° C. to about 500° C. to form a precalcined support;b) contacting the precalcined support with a titanium alkoxide to form a titanated support;c) subsequent to b), contacting the titanated support with a polyol to form a polyol associated titanated support (PATS);d) drying the PATS to form a dried polymerization catalyst precursor; ande) calcining the dried polymerization catalyst precursor to produce a polymerization catalyst, wherein less than about 0.1 wt. % of a highly reactive volatile organic compound (HRVOC) is emitted during the calcining of the dried polymerization catalyst precursor. 25. The method of claim 14 wherein the titanium alkoxide comprises titanium isopropoxide. 26. The method of claim 22 wherein the titanium alkoxide comprises titanium isopropoxide. 27. The method of claim 23 wherein the titanium alkoxide comprises titanium isopropoxide. 28. The method of claim 24 wherein the titanium alkoxide comprises titanium isopropoxide.
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