US4606870A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparing magnet wire having electron beam curable wire enamels
Assignee: Essex Solutions USA LLC
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Filing: 1985-08-12
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Granted: 1986-08-19
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Expires: 2005-08-12
Abstract
Abstract An electron beam curable magnet wire enamel comprises the reaction product of a polyester prepolymer having terminal functional groups reactive with an isocyanate, and a urethane-acrylate prepolymer formed by reacting a diisocyanate and a hydroxyalkylacrylate. The resulting polymer is extrudable at 100% solids onto a magnet wire substrate and electron beam curable.
Inventors
- 👤 Charles W. McGregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:21
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; B29; B29C; B29C35/00; B29C35/02; B29C35/08; C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G18/40; C08G18/42; C08G18/4205; C08G18/4208; C08G18/70; C08G18/81; C08G18/8141; C08G18/815; C08G18/8158; C08G18/8175; H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/302; H01B3/308; B05D3/00; B05D3/06; B05D3/068; B29C35/0866; B29C2035/0877
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A method of coating a magnet wire substrate comprising applying to the magnet wire substrate through an extrusion die a 100% solids polymer composition comprising the reaction product of a polyester prepolymer having terminal functional groups reactive with an isocyanate, and a urethane-acrylate prepolymer formed by reacting a diisocyanate and a hydroxyalkylacrylate, the reaction product having the formula: ##STR7## where R is a polyester backbone and curing the applied composition with electron beam radiation.
Claim 2
Independent Claim
74 words
A method of coating a magnet wire substrate comprising applying to the magnet wire substrate through an extrusion die a 100% solids polymer composition comprising the reaction product of a polyester prepolymer having terminal functional groups reactive with an isocyanate, and a urethane-acrylate prepolymer formed by reacting a diisocyanate and a hydroxyalkylacrylate, the reaction product having the formula: ##STR7## where R is a polyester backbone and curing the applied composition with electron beam radiation.
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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) | 1989-08-18 | 1990-02-17 | 1990-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-18 | 1994-02-17 | 1994-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-18 | 1998-02-17 | 1998-08-19 | $7700.00 | Window Closed / Lapsed |