BR8807384A - Processo para a preparacao de anidridos oxi-diftalicos - Google Patents

Processo para a preparacao de anidridos oxi-diftalicos

Info

Publication number
BR8807384A
BR8807384A BR888807384A BR8807384A BR8807384A BR 8807384 A BR8807384 A BR 8807384A BR 888807384 A BR888807384 A BR 888807384A BR 8807384 A BR8807384 A BR 8807384A BR 8807384 A BR8807384 A BR 8807384A
Authority
BR
Brazil
Prior art keywords
diftalic
anhydrates
oxi
preparation
diftalic anhydrates
Prior art date
Application number
BR888807384A
Other languages
English (en)
Inventor
Willis T Schwartz
Original Assignee
Occidental Chem 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 Occidental Chem Co filed Critical Occidental Chem Co
Publication of BR8807384A publication Critical patent/BR8807384A/pt

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
BR888807384A 1987-08-24 1988-08-05 Processo para a preparacao de anidridos oxi-diftalicos BR8807384A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/088,325 US4837404A (en) 1987-08-24 1987-08-24 Process for the preparation of oxy-diphthalic anhydrides
PCT/US1988/002589 WO1989001935A1 (en) 1987-08-24 1988-08-05 Process for the preparation of oxy-diphthalic anhydrides

Publications (1)

Publication Number Publication Date
BR8807384A true BR8807384A (pt) 1990-03-20

Family

ID=22210712

Family Applications (1)

Application Number Title Priority Date Filing Date
BR888807384A BR8807384A (pt) 1987-08-24 1988-08-05 Processo para a preparacao de anidridos oxi-diftalicos

Country Status (8)

Country Link
US (1) US4837404A (pt)
EP (1) EP0377637A4 (pt)
JP (1) JPH03500771A (pt)
BR (1) BR8807384A (pt)
CA (1) CA1267907A (pt)
ES (1) ES2008003A6 (pt)
IL (1) IL87379A (pt)
WO (1) WO1989001935A1 (pt)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4827000A (en) * 1987-09-21 1989-05-02 Occidental Chemical Corporation Process for the preparation of phenoxy phthalic anhydrides
US5003031A (en) * 1989-05-15 1991-03-26 Occidental Chemical Corporation Polyimides and co-polyimides based on dioxydiphthalic anhydride
US4943642A (en) * 1989-05-15 1990-07-24 Occidental Chemical Corporation Halo-oxydiphthalic anhydrides
US5003086A (en) * 1989-05-15 1991-03-26 Occidental Chemical Corporation Process of preparing dioxydiphthalic anhydride
US5077415A (en) * 1990-01-19 1991-12-31 Ciba-Geigy Corporation Disubstituted aromatic dianhydrides
JP3056539B2 (ja) * 1990-06-08 2000-06-26 オクシデンタル ケミカル コーポレイション オキシジ無水フタル酸及びアシルオキシ無水フタル酸の調製方法
JP3025414B2 (ja) 1994-09-20 2000-03-27 ウシオ電機株式会社 誘電体バリア放電ランプ装置
JP2775699B2 (ja) 1994-09-20 1998-07-16 ウシオ電機株式会社 誘電体バリア放電ランプ
US6727370B1 (en) 2003-02-24 2004-04-27 General Electric Company Method for preparing oxydiphthalic anhydrides using bicarbonate as catalyst
US6706897B1 (en) 2003-02-24 2004-03-16 General Electric Company Method for preparing oxydiphthalic anhydrides using guanidinium salt as catalyst
US20060293528A1 (en) * 2005-06-24 2006-12-28 General Electric Company Method of purifying dianhydrides
CN102030732A (zh) * 2010-10-29 2011-04-27 仪征市海帆化工有限公司 4,4’-氧代双邻苯二甲酸酐的合成方法
CN111187240B (zh) * 2020-02-26 2021-12-07 河北海力香料股份有限公司 一种4,4-联苯醚二酐的制备方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3850965A (en) * 1973-03-30 1974-11-26 Gen Electric Method for making aromatic ether anhydrides and products made thereby
US3992407A (en) * 1976-04-14 1976-11-16 General Electric Company Preparation of aromatic bisimides
US4697023A (en) * 1986-10-03 1987-09-29 Occidental Chemical Corporation Process for the preparation of oxy-diphthalic anhydrides
US4868316A (en) * 1987-04-27 1989-09-19 Occidental Chemical Corporation Process for the preparation of diether diphthalic anhydrides

Also Published As

Publication number Publication date
ES2008003A6 (es) 1989-07-01
CA1267907A (en) 1990-04-17
US4837404A (en) 1989-06-06
EP0377637A1 (en) 1990-07-18
WO1989001935A1 (en) 1989-03-09
JPH03500771A (ja) 1991-02-21
IL87379A (en) 1992-12-01
IL87379A0 (en) 1989-01-31
EP0377637A4 (en) 1990-09-05

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Legal Events

Date Code Title Description
FB19 Grant procedure suspended (art. 19)
FA2 Application deemed withdrawn (art. 19(5))