DE3772260D1 - Para- oder meta-terphenyltetracarbonsaeuren, ihre dianhydride und verfahren zu ihrer herstellung. - Google Patents

Para- oder meta-terphenyltetracarbonsaeuren, ihre dianhydride und verfahren zu ihrer herstellung.

Info

Publication number: DE3772260D1
Authority: DE; Germany
Prior art keywords: terphenyltetracarbonic; dianhydrides; para; meta; acids
Prior art date: 1986-04-30
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 - Lifetime

Application number

DE8787303730T

Other languages

English (en)

Inventor

Tohru C O Ibaraki Rese Kikuchi

Toshiyuki C O Ibaraki R Fujita

Takayuki C O Ibaraki Res Saito

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.)

Showa Denko Materials Co ltd

Original Assignee

Hitachi Chemical Co Ltd

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.)

1986-04-30

Filing date

1987-04-28

Publication date

1991-09-26

1986-04-30 Priority claimed from JP10037886A external-priority patent/JPS62258338A/ja

1986-04-30 Priority claimed from JP10037986A external-priority patent/JPS62258339A/ja

1987-04-28 Application filed by Hitachi Chemical Co Ltd filed Critical Hitachi Chemical Co Ltd

1991-09-26 Application granted granted Critical

1991-09-26 Publication of DE3772260D1 publication Critical patent/DE3772260D1/de

2007-04-29 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Links

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
- C07C63/33—Polycyclic acids
- C07C63/331—Polycyclic acids with all carboxyl groups bound to non-condensed rings

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)

DE8787303730T 1986-04-30 1987-04-28 Para- oder meta-terphenyltetracarbonsaeuren, ihre dianhydride und verfahren zu ihrer herstellung. Expired - Lifetime DE3772260D1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP10037886A JPS62258338A (ja)	1986-04-30	1986-04-30	新規なパラ−タ−フエニルテトラカルボン酸又はそのジ無水物並びにこれらの製造法
JP10037986A JPS62258339A (ja)	1986-04-30	1986-04-30	新規なメタ−タ−フエニルテトラカルボン酸又はそのジ無水物並びにこれらの製造法

Publications (1)

Publication Number	Publication Date
DE3772260D1 true DE3772260D1 (de)	1991-09-26

Family

ID=26441412

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8787303730T Expired - Lifetime DE3772260D1 (de)	1986-04-30	1987-04-28	Para- oder meta-terphenyltetracarbonsaeuren, ihre dianhydride und verfahren zu ihrer herstellung.

Country Status (3)

Country	Link
US (1)	US4912233A (de)
EP (1)	EP0247731B1 (de)
DE (1)	DE3772260D1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2735314B2 (ja) *	1989-10-06	1998-04-02	株式会社日立製作所	高純度の３，３’，４，４’―ビフェニルテトラカルボン酸又はその酸二無水物の製造方法
US5198555A (en) *	1991-11-15	1993-03-30	Amoco Corporation	Dianhydrides from catalyzed reaction of monoanhydide monoacid halides with polyalkylated mononuclear aromatics
CN113583443B (zh) *	2021-08-04	2022-11-22	深圳瑞华泰薄膜科技股份有限公司	一种应用于柔性光电领域的透明聚酰亚胺及其制备方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3270067A (en) *	1962-07-12	1966-08-30	Merck & Co Inc	Chemical process and products produced thereby
US3576013A (en) *	1962-12-28	1971-04-20	Monsanto Chemicals	Polyanhydrides
US3891633A (en) *	1970-01-07	1975-06-24	Alfred Anisimovich Berlin	Method of producing dianhydrides of aromatic tetracarboxylic acids
GB1338932A (en) *	1971-01-01	1973-11-28	Inst Khim Fiz An Sssr	Method of producing dianhydrides of aromatic tetracarboxylic acids
GB2073213B (en) *	1980-03-19	1983-08-24	Coal Industry Patents Ltd	Phenanthrene based polyimide resin
US4600798A (en) *	1985-03-18	1986-07-15	General Electric Company	Aryl-diethers

1987
- 1987-04-28 DE DE8787303730T patent/DE3772260D1/de not_active Expired - Lifetime
- 1987-04-28 EP EP87303730A patent/EP0247731B1/de not_active Expired - Lifetime
1988
- 1988-10-21 US US07/262,220 patent/US4912233A/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
EP0247731B1 (de)	1991-08-21
EP0247731A1 (de)	1987-12-02
US4912233A (en)	1990-03-27

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Legal Events

Date	Code	Title	Description
1992-09-17	8364	No opposition during term of opposition
2003-02-13	8339	Ceased/non-payment of the annual fee