US4186241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Insulated wire and method for producing same
Assignee: Beck Dr and Co GmbH
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Filing: 1978-12-04
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Granted: 1980-01-29
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Expires: 1998-12-04
Abstract
Abstract A partially crystalline thermoplastic polyamide for use in the preparation of insulated wires through the extrusion of a thermoplastic coating, consisting of terephthalic acid or a functional derivative thereof, hexamethylenediamine and isophoronediamine; also disclosed are a process for the preparation of insulated wires using the above polyamine; and an insulated wire employing such polyamide as the thermoplastic coating.
Inventors
- 👤 Harald Janssen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:33
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/303; H01B3/305; H01B13/00; H01B13/06; H01B13/14; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
71 words
A partially crystalline thermoplastic polyamide for use in the preparation of insulated wires through the extrusion of a thermoplastic coating, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component.
Claim 2
Dependent Claim
71 words
A partially crystalline thermoplastic polyamide for use in the preparation of insulated wires through the extrusion of a thermoplastic coating, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component.
Claim 3
Dependent Claim
19 words
The polyamide of claim 1, wherein the ratio of said acid component to said amine component is about 1:1.
Claim 4
Dependent Claim
20 words
The polyamide of claim 1, wherein said isophoronediamine comprises between 5 and 20 Mol % of the total amine component.
Claim 5
Dependent Claim
20 words
The polyamide of claim 1, wherein said isophoronediamine comprises between 8 and 15 Mol % of the total amine component.
Claim 6
Dependent Claim
18 words
The polyamide of claim 1, wherein said isophoronediamine comprises about 12 Mol % of the total amine component.
Claim 7
Dependent Claim
105 words
A process for the preparation of insulated wires through the extrusion of a thermoplastic coating, involving the use of a partially crystalline thermoplastic polyamide, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component, said process comprising passing a conductor wire through a coating zone of an extruder to coat said wire; and treating said wire to regulate the thickness of the applied coating.
Claim 8
Dependent Claim
105 words
A process for the preparation of insulated wires through the extrusion of a thermoplastic coating, involving the use of a partially crystalline thermoplastic polyamide, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component, said process comprising passing a conductor wire through a coating zone of an extruder to coat said wire; and treating said wire to regulate the thickness of the applied coating.
Claim 9
Dependent Claim
20 words
The process of claim 6, wherein said conductor wire is preheated before passage through said coating zone of said extruder.
Claim 10
Dependent Claim
65 words
An insulated wire having an extruded thermoplastic coating of a partially crystalline thermoplastic polyamide, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component.
Claim 11
Dependent Claim
65 words
An insulated wire having an extruded thermoplastic coating of a partially crystalline thermoplastic polyamide, said polyamide comprising an acid component and an amine component in a ratio of 1:1 to 1:1.1, wherein said acid component is terephthalic acid or a functional derivative thereof, and said amine component consists of hexamethylenediamine and isophoronediamine, said isophoronediamine comprising at least 5 Mol % of the total amine component.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-28 | 1983-07-30 | 1984-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-28 | 1987-07-30 | 1988-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-28 | 1991-07-30 | 1992-01-29 | $7700.00 | Window Closed / Lapsed |