US4234706A
Expired / Lapsed
US
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Quinone-coupled polyphenylene oxides
Assignee: General Electric Co
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Filing: 1977-05-26
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Granted: 1980-11-18
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Expires: 1997-05-26
Abstract
Abstract Quinones and polyphenylene oxides are reacted to provide quinone-coupled polyphenylene oxides having an average hydroxyl group per molecule value greater than the average hydroxyl group value associated with polyphenylene oxide reactants. The resulting new polymers have improved color and in combination with styrene resins provide thermoplastic compositions having improved chemical and physical properties.
Inventors
- 👤 Dwain M. White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:32
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/485
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
A quinone-coupled polyphenylene oxide of the formula ##STR5## wherein independently each --OZO-- is a divalent quinone residue, Z is a divalent arene radical, either a or b is at least equal to 1 and the sum of a plus b is at least equal to 10, R' is hydrogen, a hydrocarbon radical, a halohydrocarbon radical having at least 2 carbon atoms between the halogen atoms and phenol nucleus, a hydrocarbonoxy radical, or a halohydrocarbonoxy radical having at least two carbon atoms between the halogen atoms and phenol nucleus, R" being the same as R' and, in addition, halogen.
Claim 2
Dependent Claim
98 words
A quinone-coupled polyphenylene oxide of the formula ##STR5## wherein independently each --OZO-- is a divalent quinone residue, Z is a divalent arene radical, either a or b is at least equal to 1 and the sum of a plus b is at least equal to 10, R' is hydrogen, a hydrocarbon radical, a halohydrocarbon radical having at least 2 carbon atoms between the halogen atoms and phenol nucleus, a hydrocarbonoxy radical, or a halohydrocarbonoxy radical having at least two carbon atoms between the halogen atoms and phenol nucleus, R" being the same as R' and, in addition, halogen.
Claim 3
Dependent Claim
19 words
A claim 1 compound, wherein --OZO-- is of the formula ##STR6## wherein R' and R" are as defined hereinbefore.
Claim 4
Dependent Claim
15 words
A claim 2 compound, wherein each R' is a methyl radical and R" is hydrogen.
Claim 5
Dependent Claim
19 words
A claim 3 compound, wherein the sum of a plus b is at least equal to 40 to 500.
Claim 6
Dependent Claim
17 words
A claim 4 compound, wherein the sum of a plus b is equal to 40 to 170.
Claim 7
Dependent Claim
20 words
A claim 2 compound, wherein each R' is hydrogen, a hydrocarbon radical, or a halohydrocarbon radical and R" is hydrogen.
Claim 8
Dependent Claim
19 words
A claim 6 compound, wherein the sum of a plus b is at least equal to 40 to 500.
Claim 9
Dependent Claim
17 words
A claim 7 compound, wherein the sum of a plus b is equal to 40 to 170.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-11-18 | 1984-05-19 | 1984-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-11-18 | 1988-05-19 | 1988-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-11-18 | 1992-05-19 | 1992-11-18 | $7700.00 | Window Closed / Lapsed |