DE68907326D1 - Verfahren zur kontinuierlichen reinigung von bisphenolen. - Google Patents
Verfahren zur kontinuierlichen reinigung von bisphenolen.Info
- Publication number
- DE68907326D1 DE68907326D1 DE8989203205T DE68907326T DE68907326D1 DE 68907326 D1 DE68907326 D1 DE 68907326D1 DE 8989203205 T DE8989203205 T DE 8989203205T DE 68907326 T DE68907326 T DE 68907326T DE 68907326 D1 DE68907326 D1 DE 68907326D1
- Authority
- DE
- Germany
- Prior art keywords
- bisphenols
- continuously cleaning
- cleaning
- continuously
- cleaning bisphenols
- 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 - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C39/00—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring
- C07C39/12—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings
- C07C39/15—Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring polycyclic with no unsaturation outside the aromatic rings with all hydroxy groups on non-condensed rings, e.g. phenylphenol
- C07C39/16—Bis-(hydroxyphenyl) alkanes; Tris-(hydroxyphenyl)alkanes
-
- 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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/285,254 US4927973A (en) | 1988-12-16 | 1988-12-16 | Process for continuous purification of bisphenols |
Publications (2)
Publication Number | Publication Date |
---|---|
DE68907326D1 true DE68907326D1 (de) | 1993-07-29 |
DE68907326T2 DE68907326T2 (de) | 1993-10-21 |
Family
ID=23093451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE89203205T Expired - Fee Related DE68907326T2 (de) | 1988-12-16 | 1989-12-14 | Verfahren zur kontinuierlichen Reinigung von Bisphenolen. |
Country Status (6)
Country | Link |
---|---|
US (1) | US4927973A (de) |
EP (1) | EP0373728B1 (de) |
JP (1) | JP2824798B2 (de) |
KR (1) | KR0153520B1 (de) |
CA (1) | CA2005470C (de) |
DE (1) | DE68907326T2 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5243093A (en) * | 1990-09-07 | 1993-09-07 | General Electric Company | Process and composition |
US5105026A (en) * | 1990-11-15 | 1992-04-14 | Shell Oil Company | Process for preparing a bisphenol |
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 |
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 |
US5874645A (en) * | 1997-04-25 | 1999-02-23 | The Dow Chemical Company | Process for the preparation and purification of 4,4'-dihydroxy-alpha-substituted stilbene |
DE10026407A1 (de) | 2000-05-29 | 2001-12-06 | Basf Ag | Verfahren der diskontinuierlichen kristallisativen Reinigung von Roh-Acrylsäure |
US6703530B2 (en) | 2002-02-28 | 2004-03-09 | General Electric Company | Chemical reactor system and process |
US20050075520A1 (en) * | 2002-03-13 | 2005-04-07 | O'young Drow Lionel | System and method of producing bisphenol-A (BPA) using two stage crystallization |
US6960697B2 (en) | 2002-03-13 | 2005-11-01 | Mitsubishi Chemical Corporation | System and method of producing bisphenol-A (BPA) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3326986A (en) * | 1965-01-22 | 1967-06-20 | Dow Chemical Co | Process for purifying 4, 4'-isopropylidenediphenol |
FR1580676A (de) * | 1968-09-13 | 1969-09-05 | ||
US4408087A (en) * | 1979-10-29 | 1983-10-04 | General Electric Company | Purification of bisphenol-A |
US4529823A (en) * | 1984-04-02 | 1985-07-16 | General Electric Company | Purification of bisphenol-A |
US4740635A (en) * | 1986-10-20 | 1988-04-26 | General Electric Company | Process for crystallizing bisphenol-A |
-
1988
- 1988-12-16 US US07/285,254 patent/US4927973A/en not_active Expired - Lifetime
-
1989
- 1989-12-13 KR KR1019890018609A patent/KR0153520B1/ko not_active IP Right Cessation
- 1989-12-14 CA CA002005470A patent/CA2005470C/en not_active Expired - Fee Related
- 1989-12-14 DE DE89203205T patent/DE68907326T2/de not_active Expired - Fee Related
- 1989-12-14 EP EP89203205A patent/EP0373728B1/de not_active Expired - Lifetime
- 1989-12-14 JP JP1322790A patent/JP2824798B2/ja not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
KR0153520B1 (ko) | 1998-12-01 |
EP0373728B1 (de) | 1993-06-23 |
KR900009520A (ko) | 1990-07-04 |
JPH02212450A (ja) | 1990-08-23 |
EP0373728A1 (de) | 1990-06-20 |
US4927973A (en) | 1990-05-22 |
CA2005470A1 (en) | 1990-06-16 |
CA2005470C (en) | 1999-04-27 |
DE68907326T2 (de) | 1993-10-21 |
JP2824798B2 (ja) | 1998-11-18 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |