GB1474168A - Isomerization of bisphenol - Google Patents
Isomerization of bisphenolInfo
- Publication number
- GB1474168A GB1474168A GB3160573A GB3160573A GB1474168A GB 1474168 A GB1474168 A GB 1474168A GB 3160573 A GB3160573 A GB 3160573A GB 3160573 A GB3160573 A GB 3160573A GB 1474168 A GB1474168 A GB 1474168A
- Authority
- GB
- United Kingdom
- Prior art keywords
- isomerization
- dpp
- hydroxyphenyl
- bisphenol
- propane
- 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
Links
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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
1474168 Isomerization of bisphenol SHELL INTERNATIONALE RESEARCH MAAT SCHAPPIJ BV 1 July 1974 [3 July 1973] 31605/73 Heading C2C The invention relates to a process for the isomerization of 2 - (2 - hydroxyphenyl)- 2 - (4 - hydroxyphenyl)propane (o,p-DPP) to 2,2 - bis(4 - hydroxyphenyl)propane (p, p- DPP) in the presence of HCl, these isomers being present in a starting mixture with phenol in a ratio of o,p-DPP to p,p-DPP greater than the equilibrium ratio, at the temperature chosen for the isomerization, the isomerization being carried out under a pressure of at least 1À5 bar (abs.) and under substantially anhydrous conditions.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3160573A GB1474168A (en) | 1973-07-03 | 1973-07-03 | Isomerization of bisphenol |
NL7408833A NL7408833A (en) | 1973-07-03 | 1974-07-01 | METHOD FOR ISOMERIZING O, P-DPP. |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3160573A GB1474168A (en) | 1973-07-03 | 1973-07-03 | Isomerization of bisphenol |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1474168A true GB1474168A (en) | 1977-05-18 |
Family
ID=10325650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3160573A Expired GB1474168A (en) | 1973-07-03 | 1973-07-03 | Isomerization of bisphenol |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB1474168A (en) |
NL (1) | NL7408833A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0355513A2 (en) * | 1988-08-16 | 1990-02-28 | Bayer Ag | Isomerisation or homologisation of bisphenols |
-
1973
- 1973-07-03 GB GB3160573A patent/GB1474168A/en not_active Expired
-
1974
- 1974-07-01 NL NL7408833A patent/NL7408833A/en not_active Application Discontinuation
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0355513A2 (en) * | 1988-08-16 | 1990-02-28 | Bayer Ag | Isomerisation or homologisation of bisphenols |
JPH0283345A (en) * | 1988-08-16 | 1990-03-23 | Bayer Ag | Isomerization of bisphenol |
EP0355513A3 (en) * | 1988-08-16 | 1990-12-27 | Bayer Ag | Isomerisation of bisphenols |
US5015784A (en) * | 1988-08-16 | 1991-05-14 | Bayer Aktiengesellschaft | Isomerization of bisphenols |
USRE34626E (en) * | 1988-08-16 | 1994-05-31 | Bayer Ag | Isomerization of bisphenols |
JP2723625B2 (en) | 1988-08-16 | 1998-03-09 | バイエル・アクチエンゲゼルシヤフト | Bisphenol isomerization or homologation method |
Also Published As
Publication number | Publication date |
---|---|
NL7408833A (en) | 1975-01-07 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |