US4131714A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixtures of linear polyesters used to coat metallic strands
Assignee: Essex International Inc
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Filing: 1975-12-22
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Granted: 1978-12-26
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Expires: 1995-12-22
Abstract
Abstract Bonding compositions are disclosed as well as bondable articles utilizing such compositions. Such bonding compositions contain a crystalline polyester material and an amorphous polyester material and exhibit thermally stable bonding properties. Such bondable articles include bondable magnet wires comprising a conductor, an insulating base coat thereon and a bonding composition coated thereover containing a crystalline polyester material and an amorphous polyester material with the wires adapted to be shaped as coils and the like and thereafter bonded together with a bond which exhibits bond strength at elevated temperatures.
Inventors
- 👤 Joseph Karkoski
- 👤 Lionel J. Payette
- 👤 John D. Shurboff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:34
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; H01B3/421; C; C08; C08K; C08K5/00; C08K5/04; C08K5/13; C08L; C08L67/00; C08L67/02; C09; C09J; C09J167/00; C09J167/02; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
45 words
A bondable magnet wire comprising a magnet wire having coated thereon a bonding composition exhibiting thermally stable bonding properties said bonding composition comprising a mixture of a relatively high molecular weight linear crystalline polyester material and a relatively high molecular weight linear amorphous polyester material.
Claim 2
Dependent Claim
45 words
A bondable magnet wire comprising a magnet wire having coated thereon a bonding composition exhibiting thermally stable bonding properties said bonding composition comprising a mixture of a relatively high molecular weight linear crystalline polyester material and a relatively high molecular weight linear amorphous polyester material.
Claim 3
Dependent Claim
28 words
The bondable magnet wire of claim 1 wherein said combination is a eutectic blend with discrete crystalline structures of said crystalline polyester material and said amorphous polyester material.
Claim 4
Dependent Claim
37 words
The bondable magnet wire of claim 2 wherein said crystalline polyester material has a glass transition temperature of from about 65° C. to about 95° C. and an intrinsic viscosity of from about 0.4 to about 0.8.
Claim 5
Dependent Claim
28 words
The bondable magnet wire according to claim 3 wherein said crystalline polyester material contains terephthalic acid units to isophthalic acid units in a molar ratio greater than 80:20.
Claim 6
Dependent Claim
38 words
The bondable magnet wire according to claim 2 wherein said amorphous polyester material has a glass transition temperature of from about 65° C. to about 95° C. and an intrinsic viscosity of from about 0.50 to about 0.80.
Claim 7
Dependent Claim
31 words
The bondable magnet wire according to claim 5 wherein said amorphous polyester material contains neopentyl glycol units to ethylene glycol units in a molar ratio from about 30:70 to about 50:50.
Claim 8
Dependent Claim
57 words
The bondable magnet wire according to claim 4 wherein said amorphous polyester material has a glass transition temperature of from about 65° C. to about 95° C., contains neopentyl glycol units to ethylene glycol units in a molar ratio of from about 30:70 to about 50:50, and an intrinsic viscosity of from about 0.50 to about 0.80.
Claim 9
Dependent Claim
30 words
The bondable magnet wire according to claim 7 wherein said amorphous polyester material to said crystalline polyester material is from about 70:30 to about 20:80 on a weight ratio basis.
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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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |