GB1467275A - Dianhydrides - Google Patents

Dianhydrides

Info

Publication number
GB1467275A
GB1467275A GB1931574A GB1931574A GB1467275A GB 1467275 A GB1467275 A GB 1467275A GB 1931574 A GB1931574 A GB 1931574A GB 1931574 A GB1931574 A GB 1931574A GB 1467275 A GB1467275 A GB 1467275A
Authority
GB
United Kingdom
Prior art keywords
dianhydride
preparation
nitrophthalic anhydride
tetracarboxydiphenyl ether
polyetherimides
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
GB1931574A
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.)
General Electric Co
Original Assignee
General Electric Co
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 General Electric Co filed Critical General Electric Co
Publication of GB1467275A publication Critical patent/GB1467275A/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
    • C07C51/54—Preparation of carboxylic acid anhydrides
    • C07C51/567—Preparation of carboxylic acid anhydrides by reactions not involving carboxylic acid anhydride groups

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Furan Compounds (AREA)
  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Oxygen Or Sulfur (AREA)
  • Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
  • Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
  • Epoxy Resins (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Catalysts (AREA)

Abstract

1467275 Preparation of 2,2<SP>1</SP>,3,3<SP>1</SP>-tetracarboxydiphenyl ether and its dianhydride GENERAL ELECTRIC CO 2 May 1974 [22 June 1973] 19315/74 Heading C2C [Also in Division C3] 2,2<SP>1</SP>,3,3<SP>1</SP> - Tetracarboxydiphenyl ether dianhydride (and the free acid form) are obtained by heating 3-nitrophthalic anhydride at 210- 260‹ C. in the presence of 0À1-10 wt. per cent, based on the weight of the 3-nitrophthalic anhydride, of a nitrite salt of an alkali metal an alkaline earth metal, silver or cadmium. The preparation may be effected under melt conditions or in the presence of an inert organic solvent. The dianhydride is a curing agent for epoxy resins and a starting material for polyetherimides.
GB1931574A 1973-06-22 1974-05-02 Dianhydrides Expired GB1467275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US37277173A 1973-06-22 1973-06-22

Publications (1)

Publication Number Publication Date
GB1467275A true GB1467275A (en) 1977-03-16

Family

ID=23469576

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1931574A Expired GB1467275A (en) 1973-06-22 1974-05-02 Dianhydrides

Country Status (10)

Country Link
JP (1) JPS5850992B2 (en)
BR (1) BR7405070D0 (en)
DD (1) DD112430A5 (en)
DE (1) DE2416594C2 (en)
DK (1) DK143400C (en)
FR (1) FR2299331A1 (en)
GB (1) GB1467275A (en)
IT (1) IT1015232B (en)
SE (1) SE412226B (en)
SU (1) SU561504A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016145647A1 (en) * 2015-03-19 2016-09-22 Ablestik (Shanghai) Ltd. Epoxy molding compound using anhydride hardener, manufacturing process and use thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58193198A (en) * 1982-05-07 1983-11-10 株式会社日立製作所 Exchanger for recording element of recording apparatus
JPS59169993U (en) * 1983-04-27 1984-11-14 ローランド　ディー．ジー．株式会社 X-Y Protsuta pen holder
JPS6038795U (en) * 1983-08-23 1985-03-18 アルプス電気株式会社 X-Y plotter
US5166404A (en) * 1989-05-15 1992-11-24 Occidental Chemical Corporation Dioxydiphthalic acid esters
US5185451A (en) * 1989-05-15 1993-02-09 Occidental Chemical Corporation Bis-imides of dioxydiphthalic acid

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016145647A1 (en) * 2015-03-19 2016-09-22 Ablestik (Shanghai) Ltd. Epoxy molding compound using anhydride hardener, manufacturing process and use thereof

Also Published As

Publication number Publication date
SU561504A3 (en) 1977-06-05
FR2299331A1 (en) 1976-08-27
SE412226B (en) 1980-02-25
DK143400B (en) 1981-08-17
FR2299331B1 (en) 1979-02-23
DK143400C (en) 1981-12-21
DD112430A5 (en) 1975-04-12
JPS5850992B2 (en) 1983-11-14
DK332774A (en) 1975-03-17
IT1015232B (en) 1977-05-10
DE2416594C2 (en) 1983-12-08
BR7405070D0 (en) 1975-01-21
SE7408147L (en) 1974-12-23
JPS5032143A (en) 1975-03-28
AU6775674A (en) 1975-10-16
DE2416594A1 (en) 1975-01-16

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940501