US3900445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of polyphenylene ethers with cuprous and cupric amine catalyst
Assignee: General Electric Co
•
Filing: 1973-12-26
•
Granted: 1975-08-19
•
Expires: 1993-12-26
Abstract
Abstract A novel process is disclosed for the preparation of polyphenylene ethers by the oxidative coupling of a phenol in the presence of a cuprous and cupric copperamine catalyst.
Inventors
- 👤 Glenn D Cooper
- 👤 James G Bennett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:18
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
93 words
IN A PROCESS FOR THE PREPARATION OF A HIGH MOLECULAR WEIGHT POLYPHENYLENE ETHER HAVING A DEGREE OF POLYMERIZATION OF AT LEAST 50 BY OXIDATIVELY COUPLING A MONOVALENT PHENOL HAVING SUBSTITUTION IN AT LEAST THE TWO ORTHO POSITIONS AND HYDROGEN OR HALOGEN IN THE PARA POSITION, USING OXYGEN AND A COMPLEX CATALYST AS AN OXIDIZING AGENT, THE IMPROVEMENT WHICH COMPRISES USING AS SAID COMPLEX CATALYST A MIXTURE OF A CUPROUS HALIDE SALT AND A CUPRIC HALIDE SALT AT A RATIO OF FROM 0.1:1 TO 1:0.1 OF SAID CUPROUS HALIDE TO SAID CUPRIC HALIDE, IN
Claim 2
Dependent Claim
93 words
IN A PROCESS FOR THE PREPARATION OF A HIGH MOLECULAR WEIGHT POLYPHENYLENE ETHER HAVING A DEGREE OF POLYMERIZATION OF AT LEAST 50 BY OXIDATIVELY COUPLING A MONOVALENT PHENOL HAVING SUBSTITUTION IN AT LEAST THE TWO ORTHO POSITIONS AND HYDROGEN OR HALOGEN IN THE PARA POSITION, USING OXYGEN AND A COMPLEX CATALYST AS AN OXIDIZING AGENT, THE IMPROVEMENT WHICH COMPRISES USING AS SAID COMPLEX CATALYST A MIXTURE OF A CUPROUS HALIDE SALT AND A CUPRIC HALIDE SALT AT A RATIO OF FROM 0.1:1 TO 1:0.1 OF SAID CUPROUS HALIDE TO SAID CUPRIC HALIDE, IN
Claim 3
Dependent Claim
15 words
A process as defined in claim 1 wherein said polyphenylene ether is of the formula
Claim 4
Dependent Claim
26 words
A process as defined in claim 2 wherein Q and Q'' are hydrocarbon radicals having from 1 to 8 carbon atoms and Q'''' are each hydrogen.
Claim 5
Dependent Claim
15 words
A process as defined in claim 3 wherein Q and Q'' are each methyl radicals.
Claim 6
Dependent Claim
16 words
A process as defined in claim 1 wherein said halide is a chloride or a bromide.
Claim 7
Dependent Claim
16 words
A process as defined in claim 1 wherein said halide is a chloride or a bromide.
Claim 8
Dependent Claim
14 words
A process as defined in claim 1 wherein said amine is an aliphatic monoamine.
Claim 9
Dependent Claim
15 words
A process as defined in claim 7 wherein said amine is a mono(lower) alkyl amine.
Claim 10
Dependent Claim
13 words
A process as defined in claim 8 wherein said amine is n-butyl amine.
Claim 11
Dependent Claim
15 words
A process as defined in claim 7 wherein said amine is a di-(lower) alkyl amine.
Claim 12
Dependent Claim
13 words
A process as defined in claim 10 wherein said amine is di-n-butyl amine.
Claim 13
Dependent Claim
87 words
In a process for the preparation of a high molecular weight polyphenylene ether having a degree of polymerization of at least 50 by oxidatively coupling a monovalent phenol having substitution in at least the two ortho positions and hydrogen or halogen in the para position, using oxygen and a complex catalyst as an oxidizing agent, the improvement which comprises using as said complex catalyst a mixture of cuprous chloride and cupric chloride at a ratio of from 0.5:1 to 1:0.5 in combination with a di-(lower) alkyl amine.
Claim 14
Dependent Claim
87 words
In a process for the preparation of a high molecular weight polyphenylene ether having a degree of polymerization of at least 50 by oxidatively coupling a monovalent phenol having substitution in at least the two ortho positions and hydrogen or halogen in the para position, using oxygen and a complex catalyst as an oxidizing agent, the improvement which comprises using as said complex catalyst a mixture of cuprous chloride and cupric chloride at a ratio of from 0.5:1 to 1:0.5 in combination with a di-(lower) alkyl amine.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-08-18 | 1979-02-17 | 1979-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-18 | 1983-02-17 | 1983-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-18 | 1987-02-17 | 1987-08-19 | $7700.00 | Window Closed / Lapsed |