US3619259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerized film, composite thereof, and method of forming
Assignee: General Electric Co
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Filing: 1969-04-01
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Granted: 1971-11-09
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Expires: 1989-04-01
Abstract
Abstract A thin, continuous film is formed on a substrate by the ultraviolet surface polymerization of the vapor of an imide containing photopolymerizable organic material. Such films are useful as coatings on metallic and nonmetallic substrates, capacitor dielectrics, cryogenic device insulation, insulation for microelectric devices, insulation on electrically conductive wire, and for corrosion protection.
Inventors
- 👤 Archibald N Wright
- 👤 Wilfred F Mathewson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 12:36
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/60; C; C08; C08F; C08F22/00; C08F22/36; C08G; C08G61/00; C08G61/12; C08G67/00; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C09; C09K; C09K3/00; C09K3/14; C09K3/1436; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/145; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0346; H10; H10W; H10W74/00; H10W74/40; H10W74/47; B05D3/00; B05D3/06; B05D3/061; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
15 words
A method of claim 1, in which the imide-containing photopolymerizable organic material is pyromellitic diimide.
Claim 2
Dependent Claim
15 words
A method as in claim 1, in which the imide-containing photopolymerizable organic material is succinimide.
Claim 3
Dependent Claim
78 words
A method of making a capacitor in accordance with claim 1, which comprises (1) effecting the ultraviolet surface polymerization of the vapor of the imide-containing photopolymerizable organic material in contact with the surface of a first electrode to produce a continuous adherent and flexible dielectric film thereon having a thickness of at least 125 angstroms, and (2) thereafter employing a second electrode in association with the resulting dielectric film first electrode composite of (1) to produce a capacitor.
Claim 4
Dependent Claim
80 words
A method of making a capacitor roll in accordance with claim 1 which comprises (1) photopolymerizing the vapor of the imide-containing photopolymerizable organic material in contact with the surface of a flexible metal foil to produce a first electrode composite consisting of the metal foil with a continuous and adherent imperforate dielectric film on both sides having a thickness of at least 125 angstroms, and (2) winding the first electrode composite togetheR with a second flexible electrode around a mandrel.
Claim 5
Dependent Claim
38 words
A method in accordance with claim 1, where the ultraviolet surface polymerization of the vapor of the imide-containing photopolymerizable organic material is effected by employing ultraviolet light in the region of from about 1,800 angstroms to 3,500 angstroms.
Claim 6
Dependent Claim
27 words
A composite comprising a substrate and an adherent thin continuous film on said substrate which consists essentially of a photopolymerized imide-containing organic material free of aliphatic unsaturation.
Claim 7
Dependent Claim
72 words
A capacitor in accordance with claim 7, comprising a first electrode, a continuous essentially imperforate dielectric film adhering firmly to the surface of the first electrode, said dielectric film having a thickness of at least about 125 angstroms and being an ultraviolet surface photopolymerized polymer of the imide-containing photopolymerizable organic material, a second electrode in association with the dielectric film-first electrode composite and an electrical lead connected to each of the electrodes.
Claim 8
Dependent Claim
40 words
A capacitor in accordance with claim 8 in the form of a capacitor roll, where the first electrode has a dielectric film of the imide-containing photopolymerizable organic material on both sides at a thickness of at least about 125 angstroms.
Claim 9
Dependent Claim
23 words
A product in accordance with claim 7, in which the substrate is a particle selected from the class consisting of diamond and borazon.
Claim 10
Dependent Claim
20 words
A product as in claim 10, in which a plurality of coated particles are bonded to a grinding wheel rim.
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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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |