JPS5212126A - Process for preparation of methacrylic acid - Google Patents

Process for preparation of methacrylic acid

Info

Publication number
JPS5212126A
JPS5212126A JP8676675A JP8676675A JPS5212126A JP S5212126 A JPS5212126 A JP S5212126A JP 8676675 A JP8676675 A JP 8676675A JP 8676675 A JP8676675 A JP 8676675A JP S5212126 A JPS5212126 A JP S5212126A
Authority
JP
Japan
Prior art keywords
methacrylic acid
preparation
isobutyric acid
acid
catalyst
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8676675A
Other languages
Japanese (ja)
Inventor
Noburu Kikuchi
Hideji Kuwajima
Takayuki Saito
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Showa Denko Materials Co Ltd
Original Assignee
Hitachi Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd
Priority to JP8676675A priority Critical patent/JPS5212126A/en
Publication of JPS5212126A publication Critical patent/JPS5212126A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: Methacrylic acid is prepared in high yield and high selectivity by the oxidative dehydrogenation of isobutyric acid with an oxygen-containing gas in the presence of a catalyst with intermittent addition of the isobutyric acid.
COPYRIGHT: (C)1977,JPO&Japio
JP8676675A 1975-07-16 1975-07-16 Process for preparation of methacrylic acid Pending JPS5212126A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8676675A JPS5212126A (en) 1975-07-16 1975-07-16 Process for preparation of methacrylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8676675A JPS5212126A (en) 1975-07-16 1975-07-16 Process for preparation of methacrylic acid

Publications (1)

Publication Number Publication Date
JPS5212126A true JPS5212126A (en) 1977-01-29

Family

ID=13895859

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8676675A Pending JPS5212126A (en) 1975-07-16 1975-07-16 Process for preparation of methacrylic acid

Country Status (1)

Country Link
JP (1) JPS5212126A (en)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5411588A (en) * 1977-06-24 1979-01-27 De Beers Ind Diamond Method of combining abraisive compacts
JPS5545783U (en) * 1978-09-21 1980-03-25
JPS55103101U (en) * 1979-01-13 1980-07-18
JPS55126580A (en) * 1978-12-29 1980-09-30 Gen Electric Oneebody composite body of polycrystal diamond and*or cubic boron nitride phase and substrate phase
JPS5641874A (en) * 1979-08-23 1981-04-18 Gen Electric Diamond compressed body and manufacture thereof
JPS5739106A (en) * 1980-08-14 1982-03-04 Hiroshi Ishizuka Production of diamond ultrahard alloy composite
JPS57175775A (en) * 1981-04-20 1982-10-28 Showa Denko Kk Diamond sintered body
US4391989A (en) * 1981-11-09 1983-07-05 Ashland Oil, Inc. Oxydehydrogenation of isobutyric acid and its lower alkyl esters
JPS6060981A (en) * 1983-09-08 1985-04-08 株式会社石塚研究所 Manufacture of diamond sintered body
JPS60121251A (en) * 1983-12-02 1985-06-28 Toshiba Tungaloy Co Ltd Diamond sintered body for tool and its production
JPS6134108A (en) * 1984-07-26 1986-02-18 Daijietsuto Kogyo Kk High-hardness composite sintered body for brazing tool
JPS6191344A (en) * 1984-10-11 1986-05-09 Toshiba Tungaloy Co Ltd High hardness sintered body
JPS6192823A (en) * 1984-03-27 1986-05-10 Toshiba Mach Co Ltd Resisting member for molding machine
JPH0261507U (en) * 1988-10-25 1990-05-08
JPH02274405A (en) * 1989-04-14 1990-11-08 Sumitomo Electric Ind Ltd Polycrystal diamond tool for cutting
JPH03277412A (en) * 1990-02-07 1991-12-09 G N Tool Kk Cutting tool having twisted blade and manufacture thereof
US5366522A (en) * 1991-11-07 1994-11-22 Sumitomo Electric Industries, Ltd. Polycrystalline diamond cutting tool and method of manufacturing the same
US5435815A (en) * 1992-06-30 1995-07-25 Sumitomo Electric Industries, Ltd. Cutting tool employing vapor-deposited polycrystalline diamond for cutting edge and method of manufacturing the same
EP0714695A2 (en) 1994-11-30 1996-06-05 Sumitomo Electric Industries, Ltd. Diamond sintered body having high strength and high wear-resistance and manufacturing method thereof
US5584045A (en) * 1990-11-22 1996-12-10 Sumitomo Electric Industries, Ltd. Polycrystalline diamond tool and method for producing same
US6261329B1 (en) 1998-02-26 2001-07-17 Sumitomo Electric Industries, Ltd. Diamond sintered body having high strength and high wear resistance, and tool including the same
US6528159B1 (en) 1998-03-02 2003-03-04 Sumitomo Electric Industries, Ltd. Sintered diamond tool and method for manufacturing the same
US7553350B2 (en) 2005-07-26 2009-06-30 Sumitomo Electric Industries, Ltd. High-strength and highly-wear-resistant sintered diamond object and manufacturing method of the same
US7985470B2 (en) 2007-02-02 2011-07-26 Sumitomo Electric Hardmetal Corp. Diamond sintered compact

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6159270B2 (en) * 1977-06-24 1986-12-15 De Biazu Indasutoriaru Daiamondo Deibijon Ltd
JPS5411588A (en) * 1977-06-24 1979-01-27 De Beers Ind Diamond Method of combining abraisive compacts
JPS5545783U (en) * 1978-09-21 1980-03-25
JPS55126580A (en) * 1978-12-29 1980-09-30 Gen Electric Oneebody composite body of polycrystal diamond and*or cubic boron nitride phase and substrate phase
JPS6313952B2 (en) * 1978-12-29 1988-03-28 Gen Electric
JPS55103101U (en) * 1979-01-13 1980-07-18
JPS5641874A (en) * 1979-08-23 1981-04-18 Gen Electric Diamond compressed body and manufacture thereof
JPH0260632B2 (en) * 1979-08-23 1990-12-17 Gen Electric
JPS5739106A (en) * 1980-08-14 1982-03-04 Hiroshi Ishizuka Production of diamond ultrahard alloy composite
JPH0137444B2 (en) * 1980-08-14 1989-08-07 Hiroshi Ishizuka
JPS57175775A (en) * 1981-04-20 1982-10-28 Showa Denko Kk Diamond sintered body
JPH0211547B2 (en) * 1981-04-20 1990-03-14 Showa Denko Kk
US4391989A (en) * 1981-11-09 1983-07-05 Ashland Oil, Inc. Oxydehydrogenation of isobutyric acid and its lower alkyl esters
JPS6060981A (en) * 1983-09-08 1985-04-08 株式会社石塚研究所 Manufacture of diamond sintered body
JPH0450271B2 (en) * 1983-09-08 1992-08-13 Ishizuka Kenkyusho
JPS60121251A (en) * 1983-12-02 1985-06-28 Toshiba Tungaloy Co Ltd Diamond sintered body for tool and its production
JPS6192823A (en) * 1984-03-27 1986-05-10 Toshiba Mach Co Ltd Resisting member for molding machine
JPS6134108A (en) * 1984-07-26 1986-02-18 Daijietsuto Kogyo Kk High-hardness composite sintered body for brazing tool
JPS6191344A (en) * 1984-10-11 1986-05-09 Toshiba Tungaloy Co Ltd High hardness sintered body
JPH0261507U (en) * 1988-10-25 1990-05-08
JPH02274405A (en) * 1989-04-14 1990-11-08 Sumitomo Electric Ind Ltd Polycrystal diamond tool for cutting
JPH03277412A (en) * 1990-02-07 1991-12-09 G N Tool Kk Cutting tool having twisted blade and manufacture thereof
US5584045A (en) * 1990-11-22 1996-12-10 Sumitomo Electric Industries, Ltd. Polycrystalline diamond tool and method for producing same
US5366522A (en) * 1991-11-07 1994-11-22 Sumitomo Electric Industries, Ltd. Polycrystalline diamond cutting tool and method of manufacturing the same
US5435815A (en) * 1992-06-30 1995-07-25 Sumitomo Electric Industries, Ltd. Cutting tool employing vapor-deposited polycrystalline diamond for cutting edge and method of manufacturing the same
EP0714695A2 (en) 1994-11-30 1996-06-05 Sumitomo Electric Industries, Ltd. Diamond sintered body having high strength and high wear-resistance and manufacturing method thereof
US5759216A (en) * 1994-11-30 1998-06-02 Sumitomo Electric Industries, Ltd. Diamond sintered body having high strength and high wear-resistance and manufacturing method thereof
US6261329B1 (en) 1998-02-26 2001-07-17 Sumitomo Electric Industries, Ltd. Diamond sintered body having high strength and high wear resistance, and tool including the same
US6528159B1 (en) 1998-03-02 2003-03-04 Sumitomo Electric Industries, Ltd. Sintered diamond tool and method for manufacturing the same
US7553350B2 (en) 2005-07-26 2009-06-30 Sumitomo Electric Industries, Ltd. High-strength and highly-wear-resistant sintered diamond object and manufacturing method of the same
US7985470B2 (en) 2007-02-02 2011-07-26 Sumitomo Electric Hardmetal Corp. Diamond sintered compact

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