JPS5788137A - Preparation of bisphenol a - Google Patents
Preparation of bisphenol aInfo
- Publication number
- JPS5788137A JPS5788137A JP16569080A JP16569080A JPS5788137A JP S5788137 A JPS5788137 A JP S5788137A JP 16569080 A JP16569080 A JP 16569080A JP 16569080 A JP16569080 A JP 16569080A JP S5788137 A JPS5788137 A JP S5788137A
- Authority
- JP
- Japan
- Prior art keywords
- bpa
- phenol
- bisphenol
- adduct
- crude
- 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.)
- Granted
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare the colorless objective compound by distilling bisphenol A.phenol adduct obtained from phenol and acetone in the presence of a strongly acidic cation exchange resin, under reduced pressure at a specific temperature, and recrystallizing the resulting crude bisphenol A.
CONSTITUTION: A bisphenol A.phenol adduct (BPA adduct) obtained by the reaction of phenol with acetone in the presence of a strongly acidic cation exchange resin catalyst is distilled under a vacuum of 10W100mmHg at 160W185°C (pref. 165W180°C) to recover crude BPA containing 1W10wt% phenol. The crude BPA is dissolved in an aqueous medium by heating at 95W100°C, and cooled to recrystallize BPA. The amount of the aqueous medium is 0.5W10 times weight, pref. 1W5 times weight of BPA.
USE: Raw material of polycarbonate resin, epoxy resin etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16569080A JPS5788137A (en) | 1980-11-25 | 1980-11-25 | Preparation of bisphenol a |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16569080A JPS5788137A (en) | 1980-11-25 | 1980-11-25 | Preparation of bisphenol a |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5788137A true JPS5788137A (en) | 1982-06-01 |
JPS648608B2 JPS648608B2 (en) | 1989-02-14 |
Family
ID=15817185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16569080A Granted JPS5788137A (en) | 1980-11-25 | 1980-11-25 | Preparation of bisphenol a |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5788137A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4931146A (en) * | 1988-04-05 | 1990-06-05 | Mitsui Toatsu Chemicals, Inc. | Process for obtaining high-purity bisphenol A |
JPH05294871A (en) * | 1992-04-14 | 1993-11-09 | Nippon Steel Chem Co Ltd | Production of bisphenol a |
Citations (2)
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 |
JPS4948544A (en) * | 1972-05-09 | 1974-05-10 |
-
1980
- 1980-11-25 JP JP16569080A patent/JPS5788137A/en active Granted
Patent Citations (2)
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 |
JPS4948544A (en) * | 1972-05-09 | 1974-05-10 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4931146A (en) * | 1988-04-05 | 1990-06-05 | Mitsui Toatsu Chemicals, Inc. | Process for obtaining high-purity bisphenol A |
JPH05294871A (en) * | 1992-04-14 | 1993-11-09 | Nippon Steel Chem Co Ltd | Production of bisphenol a |
Also Published As
Publication number | Publication date |
---|---|
JPS648608B2 (en) | 1989-02-14 |
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