US4011200A
Expired / Lapsed
US
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Novel polyphenylene ether and process for preparing the same
Assignee: Mitsubishi Gas Chemical Co Inc
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Filing: 1975-03-04
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Granted: 1977-03-08
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Expires: 1995-03-04
Abstract
Abstract A polyphenylene ether random copolymer excelling in heat resistance and resistance to solvents, said copolymer being composed of 50-98 mol% of a structural unit of the formula ##STR1## derived from 2,6-dimethyl phenol and 50-2 mol% of a structural unit of the formula ##STR2## derived from 2,3,6-trimethylphenol, each of said structural units being randomly arranged in the polymeric structure, said copolymer having an intrinsic viscosity, as measured in chloroform at 25° C., of at least 0.3 dl/g.
Inventors
- 👤 Eiichi Yonemitsu
- 👤 Akitoshi Sugio
- 👤 Takao Kawaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:25
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/44
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
76 words
A polyphenylene ether random copolymer excelling in heat resistance and resistance to solvents, said copolymer being composed of 50-98 mol% of a structural unit of the formula ##STR5## derived from 2,6-dimethyl phenol and 50-2 mol% of a structural unit of the formula ##STR6## derived from 2,3,6-trimethylphenol, each of said structural units being randomly arranged in the polymeric structure, said copolymer having an intrinsic viscosity, as measured in chloroform at 25° C., of at least 0.3 dl/g.
Claim 2
Dependent Claim
76 words
A polyphenylene ether random copolymer excelling in heat resistance and resistance to solvents, said copolymer being composed of 50-98 mol% of a structural unit of the formula ##STR5## derived from 2,6-dimethyl phenol and 50-2 mol% of a structural unit of the formula ##STR6## derived from 2,3,6-trimethylphenol, each of said structural units being randomly arranged in the polymeric structure, said copolymer having an intrinsic viscosity, as measured in chloroform at 25° C., of at least 0.3 dl/g.
Claim 3
Dependent Claim
56 words
A copolymer of claim 1 having a Vicat softening temperature of at least 200° C. composed of 80-95 mol% of said structural unit of the formula ##STR7## and 5-20 mol% of said structural unit of the formula ##STR8## said copolymer having an intrinsic viscosity, as measured in chloroform at 25° C., of 0.40 to 0.65 dl/g.
Claim 4
Dependent Claim
121 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR9## and a structural unit of the formula ##STR10## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a metal-containing compound selected from the group consisting of the copper, manganese and cobalt compounds and an amine compound selected from the group consisting of primary, secondary and tertiary amines, while passing an oxygen-containing gas through said solution.
Claim 5
Dependent Claim
121 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR9## and a structural unit of the formula ##STR10## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a metal-containing compound selected from the group consisting of the copper, manganese and cobalt compounds and an amine compound selected from the group consisting of primary, secondary and tertiary amines, while passing an oxygen-containing gas through said solution.
Claim 6
Dependent Claim
12 words
The process of claim 3 wherein said amine compound is a monoamine.
Claim 7
Dependent Claim
13 words
The process of claim 3 wherein said amine compound is a tertiary diamine.
Claim 8
Dependent Claim
109 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR11## and a structural unit of the formula ##STR12## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a copper-containing compound and an amine compound selected from the group consisting of primary, secondary and tertiary amines, while passing an oxygen-containing gas through said solution.
Claim 9
Dependent Claim
109 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR11## and a structural unit of the formula ##STR12## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a copper-containing compound and an amine compound selected from the group consisting of primary, secondary and tertiary amines, while passing an oxygen-containing gas through said solution.
Claim 10
Dependent Claim
12 words
The process of claim 6 wherein said amine compound is a monoamine.
Claim 11
Dependent Claim
13 words
The process of claim 6 wherein said amine compound is a tertiary diamine.
Claim 12
Dependent Claim
123 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR13## and a structural unit of the formula ##STR14## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a copper-containing compound and an amine compound selected from the group consisting of primary, secondary and tertiary amines, and, in addition, a member selected from the group consisting of iodine and iodides, while passing an oxygen-containing gas through said solution.
Claim 13
Dependent Claim
123 words
A process for preparing a polyphenylene ether copolymer having a polymeric structure in which are arranged at random a structural unit of the formula ##STR13## and a structural unit of the formula ##STR14## said process comprising carrying out the oxidative coupling of a monomeric phenol mixture consisting of 50-98 mol% of 2,6-dimethylphenol and 2-50 mol% of 2,3,6-trimethylphenol in solution in a solvent capable of dissolving said monomeric phenols, at a temperature of 20°-100° C. in the presence of a combined catalyst composed of a copper-containing compound and an amine compound selected from the group consisting of primary, secondary and tertiary amines, and, in addition, a member selected from the group consisting of iodine and iodides, while passing an oxygen-containing gas through said solution.
Claim 14
Dependent Claim
21 words
The process of claim 9 wherein said amine compound is an amine of the group consisting of primary and secondary monoamines.
Claim 15
Dependent Claim
13 words
The process of claim 9 wherein said amine compound is a tertiary diamine.
Claim 16
Dependent Claim
28 words
The process of claim 9 wherein said copper-containing compound is cuprous iodide and said amine compound is an amine of the group consisting of primary and secondary monoamines.
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) | 1980-03-07 | 1980-09-06 | 1981-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-07 | 1984-09-06 | 1985-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-07 | 1988-09-06 | 1989-03-08 | $7700.00 | Window Closed / Lapsed |