GB1451695A - Process for polymerizing phenols to produce polyphenylene oxides of low molecular weight - Google Patents
Process for polymerizing phenols to produce polyphenylene oxides of low molecular weightInfo
- Publication number
- GB1451695A GB1451695A GB4702074A GB4702074A GB1451695A GB 1451695 A GB1451695 A GB 1451695A GB 4702074 A GB4702074 A GB 4702074A GB 4702074 A GB4702074 A GB 4702074A GB 1451695 A GB1451695 A GB 1451695A
- Authority
- GB
- United Kingdom
- Prior art keywords
- molecular weight
- low molecular
- polyphenylene oxides
- phenol
- produce polyphenylene
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
- C08G65/44—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols by oxidation of phenols
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyethers (AREA)
Abstract
1451695 Polyphenylene ethers MITSUBISHI GAS CHEMICAL CO Inc 30 Oct 1974 [2 Nov 1973] 47020/74 Heading C3R In a process for producing polyphenylene ethers by reacting a phenol with elemental oxygen in the presence of a catalyst, there is used a solvent in an amount from 1 to 6 times the weight of the phenol and the phenol is added gradually or intermittently to the reaction medium as the reaction proceeds. Examples are given.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP48012373A JPS4914676A (en) | 1972-04-18 | 1973-01-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1451695A true GB1451695A (en) | 1976-10-06 |
Family
ID=11803450
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4702074A Expired GB1451695A (en) | 1973-01-29 | 1974-10-30 | Process for polymerizing phenols to produce polyphenylene oxides of low molecular weight |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1451695A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0418609A2 (en) * | 1989-09-20 | 1991-03-27 | Hüls Aktiengesellschaft | Thermoplastic moulding compositions based on modified polyphenylene ether |
EP1029882A2 (en) * | 1999-02-05 | 2000-08-23 | Secretary of Agency of Industrial Science and Technology | A crystallizable poly(2,5-di-substituted-1, 4-phenylene oxide) and a method of preparing the same |
CN111286022A (en) * | 2019-12-06 | 2020-06-16 | 中国科学院大连化学物理研究所 | Supported catalyst and application thereof in preparation of low-molecular-weight polyphenylene ether |
-
1974
- 1974-10-30 GB GB4702074A patent/GB1451695A/en not_active Expired
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0418609A2 (en) * | 1989-09-20 | 1991-03-27 | Hüls Aktiengesellschaft | Thermoplastic moulding compositions based on modified polyphenylene ether |
EP0418609A3 (en) * | 1989-09-20 | 1992-03-11 | Huels Aktiengesellschaft | Thermoplastic moulding compositions based on modified polyphenylene ether |
EP1029882A2 (en) * | 1999-02-05 | 2000-08-23 | Secretary of Agency of Industrial Science and Technology | A crystallizable poly(2,5-di-substituted-1, 4-phenylene oxide) and a method of preparing the same |
EP1029882A3 (en) * | 1999-02-05 | 2000-12-06 | Secretary of Agency of Industrial Science and Technology | A crystallizable poly(2,5-di-substituted-1, 4-phenylene oxide) and a method of preparing the same |
US6541596B1 (en) | 1999-02-05 | 2003-04-01 | Secretary Of Agency Of Industrial Science And Technology | Crystallizable poly (2,5-di-substituted-1,4-phenylene oxide) and a method of preparing the same |
US6841650B2 (en) | 1999-02-05 | 2005-01-11 | National Institute Of Advanced Industrial Science And Technology | Crystallizable poly (2,5-di-substituted-1,4-phenylene oxide) and a method of preparing the same |
CN111286022A (en) * | 2019-12-06 | 2020-06-16 | 中国科学院大连化学物理研究所 | Supported catalyst and application thereof in preparation of low-molecular-weight polyphenylene ether |
CN111286022B (en) * | 2019-12-06 | 2022-07-08 | 中国科学院大连化学物理研究所 | Supported catalyst and application thereof in preparation of low-molecular-weight polyphenylene ether |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |