US4268647A
Expired / Lapsed
US
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Organic materials having meta, para-isopropylidene diphenoxy units and method
Assignee: General Electric Co
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Filing: 1980-05-19
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Granted: 1981-05-19
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Expires: 2000-05-19
Abstract
Abstract Meta,para-isopropylidene bisphenol is homopolymerized and copolymerized to produce a variety of high performance thermoplastics having improved processing characteristics. In addition to polycarbonates, there are provided polyesters, polyestercarbonates, polyepoxides, polysulfones, polyetherimides, polyformals, epoxy resins and polycarbonate-polydiorganosiloxane block polymers.
Inventors
- 👤 Donald E. Keeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:42
CPC Classifications
C; C07; C07C; C07C37/00; C07C37/11; C07C37/14; C08; C08G; C08G4/00; C08G63/00; C08G63/64; C08G64/00; C08G64/04; C08G64/18; C08G64/186; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G73/00; C08G73/06; C08G73/10; C08G73/1046; C08G73/1053; C08G73/1057; C08G73/106; C08G73/1064; C08G73/1067; C08G73/1071; C08G75/00; C08G75/20; C08G75/23; C08G77/00; C08G77/42; C08G77/448; C08G85/00; C08G2650/00; C08G2650/28; C08G2650/38; C08G2650/44
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
29 words
Thermoplastic organic polymers having chemically combined units of the formula, ##STR26## which are selected from the class consisting of polyestercarbonate copolymers, polyesters, polyformals, polysulfones, polyetherimides and organopolysiloxane-polycarbonate block polymers.
Claim 2
Dependent Claim
29 words
Thermoplastic organic polymers having chemically combined units of the formula, ##STR26## which are selected from the class consisting of polyestercarbonate copolymers, polyesters, polyformals, polysulfones, polyetherimides and organopolysiloxane-polycarbonate block polymers.
Claim 3
Dependent Claim
18 words
A thermoplastic organic polymer in accordance with claim 1 consisting essentially of meta,para-isopropylidene bisphenoxy units and formal units.
Claim 4
Dependent Claim
18 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoxy units and diphenylsulfone units.
Claim 5
Dependent Claim
18 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoxy units and organosiloxy units.
Claim 6
Dependent Claim
101 words
A thermoplastic polyetherimide in accordance with claim 1, consisting essentially of chemically combined units of the formula, ##STR27## where R 2 is a divalent organo radical selected from the class consisting of (a) aromatic hydrocarbon radicals having from 6-20 carbon atoms and halogenated derivatives thereof, (b) alkylene radicals, C.sub.(2-8) alkylene terminated polydiorganosiloxane cycloalkylene radicals having from 2-20 carbon atoms, and (c) divalent radicals included by the formula, ##STR28## where Q is a member selected from the class consisting of ##STR29## --C x H 2x , x is a whole number from 1 to 5 inclusive, and m is 0 or 1.
Claim 7
Dependent Claim
18 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoxy units and dimethylsiloxy units.
Claim 8
Dependent Claim
23 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoly units chemically combined with units of the formula, ##STR30##
Claim 9
Dependent Claim
33 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoxy units chemically combined with units of the formula, ##STR31## where n has an average value of 5 to 200.
Claim 10
Dependent Claim
20 words
A thermoplastic organic polymer in accordance with claim 1, consisting essentially of meta,para-isopropylidene bisphenoxy units chemically combined with dicarboxyphenylene units.
Claim 11
Dependent Claim
14 words
An organic polymer consisting essentially of chemically combined diglycidyl ether units of meta,para-isopropylidene bisphenol.
Claim 12
Dependent Claim
14 words
An organic polymer consisting essentially of chemically combined diglycidyl ether units of meta,para-isopropylidene bisphenol.
References Cited (Backward Citations)
US3014891A
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US3021305A
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US3030335A
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GB987794A
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US3510415A
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DE2027610A1
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GB1425773A
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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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |