DE3768607D1 - Verfahren zur kristallisation von bisphenol-a. - Google Patents

Verfahren zur kristallisation von bisphenol-a.

Info

Publication number: DE3768607D1
Authority: DE; Germany
Prior art keywords: crystallizing bisphenol; crystallizing; bisphenol
Prior art date: 1986-10-20
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.): Revoked

Application number

DE8787115112T

Other languages

English (en)

Inventor

De Matos Isabel Maria Gomes

Gaylord Michael Kissinger

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.)

1986-10-20

Filing date

1987-10-16

Publication date

1991-04-18

Family has litigation

First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=25443787&utm_source=***_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE3768607(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.

1987-10-16 Application filed by General Electric Co filed Critical General Electric Co

1991-04-18 Application granted granted Critical

1991-04-18 Publication of DE3768607D1 publication Critical patent/DE3768607D1/de

2007-10-17 Anticipated expiration legal-status Critical

Status Revoked legal-status Critical Current

Links

IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 title 1

Classifications

- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/84—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by crystallisation

Landscapes

Chemical & Material Sciences (AREA)
Organic Chemistry (AREA)
Crystallography & Structural Chemistry (AREA)
Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

DE8787115112T 1986-10-20 1987-10-16 Verfahren zur kristallisation von bisphenol-a. Revoked DE3768607D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/920,463 US4740635A (en)	1986-10-20	1986-10-20	Process for crystallizing bisphenol-A

Publications (1)

Publication Number	Publication Date
DE3768607D1 true DE3768607D1 (de)	1991-04-18

Family

ID=25443787

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8787115112T Revoked DE3768607D1 (de)	1986-10-20	1987-10-16	Verfahren zur kristallisation von bisphenol-a.

Country Status (4)

Country	Link
US (1)	US4740635A (de)
EP (1)	EP0265792B1 (de)
JP (1)	JPS63159335A (de)
DE (1)	DE3768607D1 (de)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4861919A (en) *	1988-02-29	1989-08-29	The Dow Chemical Company	Countercurrent multi-stage water crystallization of aromatic compounds
US4927973A (en) *	1988-12-16	1990-05-22	Shell Oil Company	Process for continuous purification of bisphenols
DE4105428A1 (de) *	1991-02-21	1992-08-27	Bayer Ag	Verfahren zur reinigung von bisphenolen
EP0643032B1 (de) *	1991-07-16	1997-02-05	Chiyoda Corporation	Kondensationsverfahren zur Rückgewinnung von Bisphenol A und Phenol
GB9204490D0 (en) *	1992-03-02	1992-04-15	Dow Deutschland Inc	Process for preparing bisphenol a
GB9405015D0 (en) *	1994-03-15	1994-04-27	Dow Deutschland Inc	Process for purifying a bisphenol
US5434316A (en) *	1994-07-28	1995-07-18	General Electric Company	Purification of bisphenol-A
US5773633A (en) *	1995-08-01	1998-06-30	General Electric Company	Process for crystallizing chroman-I from an impure mixture
US5874644A (en) *	1996-04-12	1999-02-23	Gammill; Ben	Method and system for bisphenol a production using controlled turbulence
US5959158A (en) *	1996-04-12	1999-09-28	Gammill; Ben	Method and system for bisphenol a production using water
US6703530B2 (en)	2002-02-28	2004-03-09	General Electric Company	Chemical reactor system and process
US6960697B2 (en)	2002-03-13	2005-11-01	Mitsubishi Chemical Corporation	System and method of producing bisphenol-A (BPA)
US20050075520A1 (en) *	2002-03-13	2005-04-07	O'young Drow Lionel	System and method of producing bisphenol-A (BPA) using two stage crystallization
RU2330835C2 (ru) *	2002-11-25	2008-08-10	Дау Глобал Текнолоджиз Инк.	Способ очистки бисфенола-а
JP5330904B2 (ja)	2009-06-12	2013-10-30	住友化学株式会社	粒状物質の製造方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
CH458284A (de) *	1965-10-01	1968-06-30	Inventa Ag	Verfahren zur Reinigung von organischen Substanzen
US4209646A (en) *	1974-10-31	1980-06-24	Rhone-Poulenc Industries	Process for crystallizing an adduct of 2,2-di(4-hydroxyphenyl) propane and phenol
US4212997A (en) *	1978-06-27	1980-07-15	General Electric Company	Process for recovering 2,2-bis(4-hydroxyphenyl)propane from an adduct of 2,2-bis(4-hydroxyphenyl)propane and phenol
US4461915A (en) *	1982-11-15	1984-07-24	General Electric Company	Purification of bisphenol-A
US4492807A (en) *	1983-04-22	1985-01-08	General Electric Company	Method for purification of bisphenol A
US4533764A (en) *	1984-03-29	1985-08-06	The Dow Chemical Company	Purification of bisphenols by removing residual solvent
US4529823A (en) *	1984-04-02	1985-07-16	General Electric Company	Purification of bisphenol-A
US4638102A (en) *	1985-12-30	1987-01-20	The Dow Chemical Company	Recrystallization of bisphenol A by azeotropically drying the solvent

1986
- 1986-10-20 US US06/920,463 patent/US4740635A/en not_active Expired - Lifetime
1987
- 1987-10-16 EP EP87115112A patent/EP0265792B1/de not_active Revoked
- 1987-10-16 DE DE8787115112T patent/DE3768607D1/de not_active Revoked
- 1987-10-19 JP JP62261937A patent/JPS63159335A/ja active Pending

Also Published As

Publication number	Publication date
EP0265792B1 (de)	1991-03-13
JPS63159335A (ja)	1988-07-02
US4740635A (en)	1988-04-26
EP0265792A1 (de)	1988-05-04

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Legal Events

Date	Code	Title	Description
1992-03-05	8363	Opposition against the patent
1993-06-17	8331	Complete revocation