GB666709A - Preparation of aromatic para dicarboxylic acids - Google Patents

Preparation of aromatic para dicarboxylic acids

Info

Publication number
GB666709A
GB666709A GB2929/49A GB292949A GB666709A GB 666709 A GB666709 A GB 666709A GB 2929/49 A GB2929/49 A GB 2929/49A GB 292949 A GB292949 A GB 292949A GB 666709 A GB666709 A GB 666709A
Authority
GB
United Kingdom
Prior art keywords
benzene
catalyst
para
oxidation
dicarboxylic acids
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
GB2929/49A
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.)
California Research LLC
Original Assignee
California Research LLC
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 California Research LLC filed Critical California Research LLC
Publication of GB666709A publication Critical patent/GB666709A/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

Benzene para-dicarboxylic acids are prepared by oxidizing a para-dialiphatic benzene in the liquid phase with an oxygen-containing gas in the presence of a soluble oxidation catalyst at elevated temperatures, the catalyst being a compound of a multivalent metal capable of inter-changing its valence structure at the reaction temperature, and removing the resulting benzene monocarboxylic acid and oxidizing it in the liquid phase with an oxygen-containing gas at a temperature greater than that of the first oxidation stage. The benzene nucleus, in addition to the alkyl groups, may contain halogens, or nitro groups; the aliphatic groups may also be substituted by hydroxyl, aldehyde, keto, or carboxyl groups. A suitable soluble catalyst is cobalt naphthenate. An example is given of the process. The Specification as open to inspection under Sect. 91, comprises the oxidation as above of o-dialiphatic benzenes, i.e. the subject-matter of Specification 673,828. This subject-matter does not appear in the Specification as accepted.
GB2929/49A 1948-02-02 1949-02-02 Preparation of aromatic para dicarboxylic acids Expired GB666709A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US666709XA 1948-02-02 1948-02-02

Publications (1)

Publication Number Publication Date
GB666709A true GB666709A (en) 1952-02-20

Family

ID=22070952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2929/49A Expired GB666709A (en) 1948-02-02 1949-02-02 Preparation of aromatic para dicarboxylic acids

Country Status (1)

Country Link
GB (1) GB666709A (en)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2696499A (en) * 1952-07-01 1954-12-07 Richfield Oil Corp Preparation of toluic acids
US2788367A (en) * 1953-03-05 1957-04-09 Union Oil Co Xylene oxidation process
DE1007763B (en) * 1952-07-01 1957-05-09 Richfield Oil Corp Process for the purification of toluic acids
DE1035642B (en) * 1954-10-06 1958-08-07 California Research Corp Process for the preparation of benzene polycarboxylic acids
DE971483C (en) * 1953-10-10 1959-02-05 Hoechst Ag Process for the purification of terephthalic acid containing p-toluic acid
US2874098A (en) * 1953-03-06 1959-02-17 Universal Oil Prod Co Process of oxidizing and separating alkylaryl mixtures
DE1097428B (en) * 1952-07-01 1961-01-19 Richfield Oil Corp Process for the production of toluic acids
DE1097972B (en) * 1954-03-16 1961-01-26 Mid Century Corp Process for the preparation of benzene dicarboxylic acids
DE1112972B (en) * 1955-04-22 1961-08-24 Mid Century Corp Process for the preparation of terephthalic acid
DE975405C (en) * 1954-10-07 1961-11-23 Huels Chemische Werke Ag Process for the preparation of terephthalic acid
DE1122508B (en) * 1955-03-24 1962-01-25 California Research Corp Process for the preparation of benzene dicarboxylic acids
US3064044A (en) * 1957-08-15 1962-11-13 Standard Oil Co Multistage oxidation system for preparing dicarboxylic acid
US3092658A (en) * 1957-08-12 1963-06-04 Standard Oil Co Continuous system for oxidizing substituted aromatic hydrocarbons and producing carboxylic acids
US3183279A (en) * 1961-05-11 1965-05-11 Sun Oil Co Purification of 2-methylnaphthalenes by selective oxidation of their isomers
US3431296A (en) * 1963-10-10 1969-03-04 Teijin Ltd Process for preparation of high purity terephthalic acid
US4681978A (en) * 1984-09-10 1987-07-21 Kureha Kagaku Kogyo Kabushiki Kaisha Process for producing 2,6-naphthalenedicarboxylic acid

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1007763B (en) * 1952-07-01 1957-05-09 Richfield Oil Corp Process for the purification of toluic acids
DE1097428B (en) * 1952-07-01 1961-01-19 Richfield Oil Corp Process for the production of toluic acids
US2696499A (en) * 1952-07-01 1954-12-07 Richfield Oil Corp Preparation of toluic acids
US2788367A (en) * 1953-03-05 1957-04-09 Union Oil Co Xylene oxidation process
US2874098A (en) * 1953-03-06 1959-02-17 Universal Oil Prod Co Process of oxidizing and separating alkylaryl mixtures
DE971483C (en) * 1953-10-10 1959-02-05 Hoechst Ag Process for the purification of terephthalic acid containing p-toluic acid
DE1097972B (en) * 1954-03-16 1961-01-26 Mid Century Corp Process for the preparation of benzene dicarboxylic acids
DE1035642B (en) * 1954-10-06 1958-08-07 California Research Corp Process for the preparation of benzene polycarboxylic acids
DE975405C (en) * 1954-10-07 1961-11-23 Huels Chemische Werke Ag Process for the preparation of terephthalic acid
DE1122508B (en) * 1955-03-24 1962-01-25 California Research Corp Process for the preparation of benzene dicarboxylic acids
DE1112972B (en) * 1955-04-22 1961-08-24 Mid Century Corp Process for the preparation of terephthalic acid
US3092658A (en) * 1957-08-12 1963-06-04 Standard Oil Co Continuous system for oxidizing substituted aromatic hydrocarbons and producing carboxylic acids
US3064044A (en) * 1957-08-15 1962-11-13 Standard Oil Co Multistage oxidation system for preparing dicarboxylic acid
US3183279A (en) * 1961-05-11 1965-05-11 Sun Oil Co Purification of 2-methylnaphthalenes by selective oxidation of their isomers
US3431296A (en) * 1963-10-10 1969-03-04 Teijin Ltd Process for preparation of high purity terephthalic acid
US4681978A (en) * 1984-09-10 1987-07-21 Kureha Kagaku Kogyo Kabushiki Kaisha Process for producing 2,6-naphthalenedicarboxylic acid

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