CA1049552A - Process for preventing blackening of phthalic acid - Google Patents

Process for preventing blackening of phthalic acid

Info

Publication number
CA1049552A
CA1049552A CA245,578A CA245578A CA1049552A CA 1049552 A CA1049552 A CA 1049552A CA 245578 A CA245578 A CA 245578A CA 1049552 A CA1049552 A CA 1049552A
Authority
CA
Canada
Prior art keywords
tolualdehyde
ppm
alkylbenzene
process according
weight
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
CA245,578A
Other languages
English (en)
French (fr)
Inventor
Toru Tanaka
Kimiko Akagi
Makoto Komatsu
Tazuo Ohta
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co Inc
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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Application granted granted Critical
Publication of CA1049552A publication Critical patent/CA1049552A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/16Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
    • C07C51/21Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
    • C07C51/255Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
    • C07C51/265Preparation 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)
CA245,578A 1975-02-18 1976-02-12 Process for preventing blackening of phthalic acid Expired CA1049552A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP50020090A JPS5198234A (en) 1975-02-18 1975-02-18 Futarusanno kokushokukaoboshisuruhoho

Publications (1)

Publication Number Publication Date
CA1049552A true CA1049552A (en) 1979-02-27

Family

ID=12017395

Family Applications (1)

Application Number Title Priority Date Filing Date
CA245,578A Expired CA1049552A (en) 1975-02-18 1976-02-12 Process for preventing blackening of phthalic acid

Country Status (9)

Country Link
US (1) US4214100A (enExample)
JP (1) JPS5198234A (enExample)
BE (1) BE838647A (enExample)
CA (1) CA1049552A (enExample)
DE (1) DE2605363C3 (enExample)
FR (1) FR2301507A1 (enExample)
GB (1) GB1508241A (enExample)
IT (1) IT1057191B (enExample)
NL (1) NL179903C (enExample)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55145637A (en) * 1979-05-02 1980-11-13 Teijin Hercules Kk Preparation of aromatic carboxylic acid or its methyl ester
JPH03112526A (ja) * 1989-09-28 1991-05-14 Matsushita Electric Ind Co Ltd 野菜切り機
JPH08325197A (ja) * 1995-05-30 1996-12-10 Mitsubishi Gas Chem Co Inc テレフタル酸の製造方法
CN1323286A (zh) 1998-09-10 2001-11-21 埃克森化学专利公司 用离子液制备芳香醛的方法
CN113214078A (zh) * 2021-05-26 2021-08-06 宜兴市阳洋塑料助剂有限公司 一种利用对苯二甲酸生产废料回收制备对苯二甲酸二辛酯的方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2963509A (en) * 1958-03-10 1960-12-06 Mid Century Corp Process for oxidation of mono-alkyl benzene
JPS5136258B1 (enExample) * 1963-04-02 1976-10-07
US3595908A (en) * 1966-11-01 1971-07-27 Inst Francais Du Petrole Two-step oxidation of paraxylene for the production of terephthalic acid
FR2113424A5 (enExample) * 1970-11-01 1972-06-23 Maruzen Oil Co Ltd

Also Published As

Publication number Publication date
NL179903C (nl) 1986-12-01
NL7601600A (nl) 1976-08-20
JPS5628897B2 (enExample) 1981-07-04
NL179903B (nl) 1986-07-01
GB1508241A (en) 1978-04-19
JPS5198234A (en) 1976-08-30
FR2301507A1 (fr) 1976-09-17
DE2605363C3 (de) 1979-07-12
IT1057191B (it) 1982-03-10
DE2605363B2 (de) 1978-10-26
US4214100A (en) 1980-07-22
DE2605363A1 (de) 1976-08-26
FR2301507B1 (enExample) 1979-02-02
BE838647A (fr) 1976-06-16

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