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US4297385A
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Particulated polyetherimide and method for making
Assignee: General Electric Co
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Filing: 1980-04-07
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Granted: 1981-10-27
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Expires: 2000-04-07
Abstract
Abstract Finely divided polyetherimide is provided which can be used in a variety of applications. These oligomers, in the form of fine powders, are particularly useful for coating wire by a powder coating technique.
Inventors
- 👤 Eugene G. Banucci
- 👤 Edith M. Boldebuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:25
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/306; B; B05; B05D; B05D7/00; B05D7/20; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1003; C08G73/1007; C08G73/1042; C08G73/1046; C08G73/105; C08G73/1057; C08G73/1064; C08G73/1067; C08G73/1071; B05D2401/00; B05D2401/30; B05D2401/32; B05D2505/00; B05D2505/50
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
59 words
A method of coating a substrate with a continuous polyetherimide film which comprises, (1) applying an organic solvent-free particulated polyetherimide having at least 50 mole percent of imide radicals based on the total moles of imide radicals and amide acid radicals onto the substrate, and (2) fusing the particulated polyetherimide film at a temperature of at least 225° C.
Claim 2
Independent Claim
59 words
A method of coating a substrate with a continuous polyetherimide film which comprises, (1) applying an organic solvent-free particulated polyetherimide having at least 50 mole percent of imide radicals based on the total moles of imide radicals and amide acid radicals onto the substrate, and (2) fusing the particulated polyetherimide film at a temperature of at least 225° C.
Claim 3
Dependent Claim
14 words
A method in accordance with claim 1, where the substrate is a conducting substrate.
Claim 4
Dependent Claim
12 words
A method in accordance with claim 1, where the substrate is copper.
Claim 5
Dependent Claim
13 words
A method in accordance with claim 1, where the substrate is aluminum wire.
Claim 6
Dependent Claim
13 words
A method in accordance with claim 1, where the substrate is aluminum strip.
Claim 7
Dependent Claim
20 words
A method in accordance with claim 1, where the particulated polyetherimide organic solvent-free powder is applied using a fluidizing gas.
Claim 8
Dependent Claim
14 words
A method in accordance with claim 1, where the particulated polyetherimide is applied electrostatically.
References Cited (Backward Citations)
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Cited
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US4163030A
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US4157996A
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US4098800A
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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) | 1984-10-26 | 1985-04-27 | 1985-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-10-26 | 1989-04-27 | 1989-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-10-26 | 1993-04-27 | 1993-10-27 | $7700.00 | Window Closed / Lapsed |