NL7008514A - - Google Patents

Info

Publication number
NL7008514A
NL7008514A NL7008514A NL7008514A NL7008514A NL 7008514 A NL7008514 A NL 7008514A NL 7008514 A NL7008514 A NL 7008514A NL 7008514 A NL7008514 A NL 7008514A NL 7008514 A NL7008514 A NL 7008514A
Authority
NL
Netherlands
Application number
NL7008514A
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 filed Critical
Publication of NL7008514A publication Critical patent/NL7008514A/xx

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
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/573—Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
NL7008514A 1969-06-13 1970-06-11 NL7008514A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691930011 DE1930011C3 (de) 1969-06-13 1969-06-13 Verfahren zur Reinigung von durch Gasphasenoxidation von 1,2,4,5-tetraalkylierten Benzolen gewonnenem Pyromellitsäuredianhydrid

Publications (1)

Publication Number Publication Date
NL7008514A true NL7008514A (fr) 1970-12-15

Family

ID=5736875

Family Applications (1)

Application Number Title Priority Date Filing Date
NL7008514A NL7008514A (fr) 1969-06-13 1970-06-11

Country Status (5)

Country Link
BE (1) BE751908A (fr)
DE (1) DE1930011C3 (fr)
FR (1) FR2052502A5 (fr)
GB (1) GB1280562A (fr)
NL (1) NL7008514A (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1746081B1 (fr) 2005-07-21 2009-11-25 Mitsubishi Gas Chemical Company Inc. Procédé de préparation d'anhydride pyromellitique de haute pureté.
CN102911181A (zh) * 2012-11-14 2013-02-06 曹永平 一种高纯度均苯四甲酸二酐的制备方法
JP2016529281A (ja) * 2013-09-02 2016-09-23 日本エア・リキード株式会社 ピロメリット酸二無水物の製造方法、該方法により製造されたピロメリット酸二無水物、ピロメリット酸二無水物の供給方法および供給装置
CN113583016A (zh) * 2021-09-01 2021-11-02 潍坊弘润新材料有限公司 一种粗均苯四甲酸二酐提高纯度的方法及其装置和应用
CN114853775B (zh) * 2022-06-30 2023-05-30 江苏正丹化学工业股份有限公司 一种均苯四甲酸二酐精制的方法

Also Published As

Publication number Publication date
DE1930011A1 (de) 1970-12-23
BE751908A (fr) 1970-11-16
DE1930011C3 (de) 1979-08-09
DE1930011B2 (de) 1978-10-26
FR2052502A5 (fr) 1971-04-09
GB1280562A (en) 1972-07-05

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Legal Events

Date Code Title Description
BV The patent application has lapsed