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GB1147346A - Process for oxidation of paraxylene - Google Patents

Process for oxidation of paraxylene

Info

Publication number
GB1147346A
GB1147346A GB5028666A GB5028666A GB1147346A GB 1147346 A GB1147346 A GB 1147346A GB 5028666 A GB5028666 A GB 5028666A GB 5028666 A GB5028666 A GB 5028666A GB 1147346 A GB1147346 A GB 1147346A
Authority
GB
United Kingdom
Prior art keywords
mixture
xylene
acid
terephthalic acid
nov
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.)
Expired
Application number
GB5028666A
Inventor
Daniel Lumbroso
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
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 IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of GB1147346A publication Critical patent/GB1147346A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1,147,346. Terephthalic acid. INSTITUT FRANCAIS DU PETROLE, DES CARBURANTS ET LUBRIFIANTS. 9 Nov., 1966 [9 Nov., 1965], No. 50286/66. Heading C2C. Terephthalic acid is made by a process comprising (1) passing molecular oxygen at 80-125‹ C. into a mixture of p-xylene and ptoluic acid containing 0À5-4% of p-xylene, the mixture being dissolved in an aliphatic carboxylic acid containing a heavy-metal oxidation catalyst, (2) introducing p-xylene into the mixture to maintain the relative concentrations of p-xylene and p-toluic acid within the limits stated above, (3) passing the mixture to a second reaction stage in which further oxidation with molecular oxygen is effected at 130-200‹ C. and (4) isolating terephthalic acid from the mixture leaving the second reaction stage. The aliphatic carboxylic acid in the reaction mixture may be acetic acid, and the catalyst may be a salt of cobalt or manganese. The process may be effected under a pressure of 2-30 kg. per sq. cm. Known initiators, e.g. olefines, ethers, ketones, aldehydes or peroxides, may be included in the reaction mixture. Examples are given.
GB5028666A 1965-11-09 1966-11-09 Process for oxidation of paraxylene Expired GB1147346A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR37872A FR1504431A (en) 1965-11-09 1965-11-09 Two-step paraxylene oxidation process

Publications (1)

Publication Number Publication Date
GB1147346A true GB1147346A (en) 1969-04-02

Family

ID=8592200

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5028666A Expired GB1147346A (en) 1965-11-09 1966-11-09 Process for oxidation of paraxylene

Country Status (5)

Country Link
BE (1) BE689371A (en)
DE (1) DE1568892A1 (en)
FR (1) FR1504431A (en)
GB (1) GB1147346A (en)
NL (1) NL6615687A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997048668A2 (en) * 1996-06-20 1997-12-24 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5866723A (en) * 1991-09-25 1999-02-02 Monsanto Company Benzoyl derivatives and synthesis thereof
US5869688A (en) * 1994-07-20 1999-02-09 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5880290A (en) * 1994-01-31 1999-03-09 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5900489A (en) * 1996-06-20 1999-05-04 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5518698B1 (en) * 1971-04-03 1980-05-21

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5866723A (en) * 1991-09-25 1999-02-02 Monsanto Company Benzoyl derivatives and synthesis thereof
US5880290A (en) * 1994-01-31 1999-03-09 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5869688A (en) * 1994-07-20 1999-02-09 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5973164A (en) * 1994-07-20 1999-10-26 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5986104A (en) * 1994-07-20 1999-11-16 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US6121458A (en) * 1994-07-20 2000-09-19 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
WO1997048668A2 (en) * 1996-06-20 1997-12-24 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
WO1997048668A3 (en) * 1996-06-20 1998-04-02 Monsanto Co Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5900489A (en) * 1996-06-20 1999-05-04 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5910596A (en) * 1996-06-20 1999-06-08 Monsanto Company Esterification of benzoic acid substituents of 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity
US5969153A (en) * 1996-06-20 1999-10-19 Monsanto Company Preparation of substituted 3-aryl-5-haloalkyl-pyrazoles having herbicidal activity

Also Published As

Publication number Publication date
NL6615687A (en) 1967-05-10
FR1504431A (en) 1967-12-08
DE1568892A1 (en) 1970-06-18
BE689371A (en) 1967-05-08

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