JPS6483034A - Production of p,p'-biphenol - Google Patents
Production of p,p'-biphenolInfo
- Publication number
- JPS6483034A JPS6483034A JP62238230A JP23823087A JPS6483034A JP S6483034 A JPS6483034 A JP S6483034A JP 62238230 A JP62238230 A JP 62238230A JP 23823087 A JP23823087 A JP 23823087A JP S6483034 A JPS6483034 A JP S6483034A
- Authority
- JP
- Japan
- Prior art keywords
- biphenol
- solvent
- sulfolane
- acid
- dealkylating
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE:To obtain the titled high-purity compound and to recover isobutene in high yield, by dealkylating 3,3',5,5'-tetratertiary butyl-4,4-dihydroxybiphenyl in the presence of an acid catalyst by using sulfolane as a solvent. CONSTITUTION:In obtaining p,p'-biphenol by dealkylating 3,3',5,5'-tetratertiary butyl-4,4'-dihydroxybiphenyl, the dealkylation is carried out by using sulfolane as a solvent and an acid such as sulfuric acid or a sulfonic acid as a catalyst to give high-purity p,p'-biphenol. Furthermore, recovered amount of isobutene can be raised and further the solvent can be reused. p,p'-Biphenol is useful as an antioxidant for fats and oils, a raw material for synthetic polymers such as polyester or polycarbonate, an intermediate for drugs and agricultural chemicals and an agent for photography. The sulfolane solvent prevents the reaction product from attaching itself to the wall of a reactor.
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238230A JPS6483034A (en) | 1987-09-22 | 1987-09-22 | Production of p,p'-biphenol |
DE3854291T DE3854291T2 (en) | 1987-09-22 | 1988-09-21 | Process for the preparation of P, P'-biphenol. |
EP88308762A EP0309226B1 (en) | 1987-09-22 | 1988-09-21 | Process for producing P,P'-biphenol |
AT88308762T ATE126191T1 (en) | 1987-09-22 | 1988-09-21 | METHOD FOR PRODUCING P,P'-BIPHENOL. |
CA000577983A CA1334978C (en) | 1987-09-22 | 1988-09-21 | Process for producing p,p'-biphenol |
EP94114271A EP0635470A1 (en) | 1987-09-22 | 1988-09-21 | Process for producing P,P'-biphenol |
US07/247,333 US4891453A (en) | 1987-09-22 | 1988-09-21 | Process for producing p,p'-biphenol |
KR1019880012259A KR910002507B1 (en) | 1987-09-22 | 1988-09-22 | Process for the preparation of p,p'-bisphenol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62238230A JPS6483034A (en) | 1987-09-22 | 1987-09-22 | Production of p,p'-biphenol |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6483034A true JPS6483034A (en) | 1989-03-28 |
Family
ID=17027082
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62238230A Pending JPS6483034A (en) | 1987-09-22 | 1987-09-22 | Production of p,p'-biphenol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483034A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0432782A2 (en) * | 1989-12-15 | 1991-06-19 | Mitsubishi Petrochemical Co., Ltd. | Process for preparing 4,4'-dihydroxybiphenyl |
CN112592274A (en) * | 2020-12-21 | 2021-04-02 | 江苏极易新材料有限公司 | Process for synthesizing methyl p-hydroxyphenylpropionate |
-
1987
- 1987-09-22 JP JP62238230A patent/JPS6483034A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0432782A2 (en) * | 1989-12-15 | 1991-06-19 | Mitsubishi Petrochemical Co., Ltd. | Process for preparing 4,4'-dihydroxybiphenyl |
CN112592274A (en) * | 2020-12-21 | 2021-04-02 | 江苏极易新材料有限公司 | Process for synthesizing methyl p-hydroxyphenylpropionate |
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