JP2006249070A5 - - Google Patents

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JP2006249070A5
JP2006249070A5 JP2006020668A JP2006020668A JP2006249070A5 JP 2006249070 A5 JP2006249070 A5 JP 2006249070A5 JP 2006020668 A JP2006020668 A JP 2006020668A JP 2006020668 A JP2006020668 A JP 2006020668A JP 2006249070 A5 JP2006249070 A5 JP 2006249070A5
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JP
Japan
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patent document
proposes
carboxylic acid
reaction system
unsaturated carboxylic
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Pending
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JP2006020668A
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Japanese (ja)
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JP2006249070A (en
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Priority to JP2006020668A priority Critical patent/JP2006249070A/en
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オレフィンまたはα，β−不飽和アルデヒドをパラジウム含有触媒と分子状酸素により液相酸化してα，β−不飽和カルボン酸を得る方法については、種々検討されている。特許文献１ではブチル化されたヒドロキシトルエン、２，２’−メチレンビス（４−メチル−６−ｔｅｒｔ−ブチルフェノール）等の遊離基禁止剤を反応系に存在させてα，β−不飽和カルボン酸を製造する方法が提案されている。特許文献２では、モリブデンの酸化物、ヘテロポリモリブデン酸及びヘテロポリモリブデン酸塩から選ばれるモリブデン化合物の存在下で反応を行なうことが提案されている。また、特許文献３では適度な量のハイドロキノンを反応系に加えることにより副生成物が低減化できることが提案されている。
特開昭６０−１５５１４８号公報 特開昭５６−５９７２２号公報 米国特許第４４３５５９８号明細書 Various methods for obtaining an α, β-unsaturated carboxylic acid by liquid phase oxidation of an olefin or α, β-unsaturated aldehyde with a palladium-containing catalyst and molecular oxygen have been studied. In Patent Document 1, a free radical inhibitor such as butylated hydroxytoluene or 2,2′-methylenebis (4-methyl-6-tert-butylphenol) is present in the reaction system to produce α, β-unsaturated carboxylic acid. A manufacturing method has been proposed. Patent Document 2 proposes that the reaction be performed in the presence of a molybdenum compound selected from molybdenum oxide, heteropolymolybdic acid, and heteropolymolybdate. Patent Document 3 proposes that by-products can be reduced by adding an appropriate amount of hydroquinone to the reaction system.
JP 60-155148 A JP 56-59722 A U.S. Pat. No. 4,435,598

JP2006020668A 2005-02-09 2006-01-30 METHOD FOR PRODUCING alpha,beta-UNSATURATED CARBOXYLIC ACID Pending JP2006249070A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006020668A JP2006249070A (en) 2005-02-09 2006-01-30 METHOD FOR PRODUCING alpha,beta-UNSATURATED CARBOXYLIC ACID

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2005033205 2005-02-09
JP2006020668A JP2006249070A (en) 2005-02-09 2006-01-30 METHOD FOR PRODUCING alpha,beta-UNSATURATED CARBOXYLIC ACID

Publications (2)

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JP2006249070A JP2006249070A (en) 2006-09-21
JP2006249070A5 true JP2006249070A5 (en) 2009-03-12

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JP2006020668A Pending JP2006249070A (en) 2005-02-09 2006-01-30 METHOD FOR PRODUCING alpha,beta-UNSATURATED CARBOXYLIC ACID

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5416886B2 (en) * 2007-05-16 2014-02-12 三菱レイヨン株式会社 Palladium-containing supported catalyst and method for producing α, β-unsaturated carboxylic acid

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4832821A (en) * 1971-08-21 1973-05-02
JP4559742B2 (en) * 2004-01-19 2010-10-13 三菱レイヨン株式会社 Process for producing α, β-unsaturated carboxylic acid
US7446223B2 (en) * 2004-06-04 2008-11-04 Mitsubishi Rayon Co., Ltd. Palladium-containing catalyst and method for producing same

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