Insulated wire
US-2015357084-A1 · Dec 10, 2015 · US
Electric wire and method for producing the same, and multi-core cable and method for producing the same
US9997279B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9997279-B2 |
| Application number | US-201615093167-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 7, 2016 |
| Priority date | Apr 8, 2015 |
| Publication date | Jun 12, 2018 |
| Grant date | Jun 12, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
The electric wire according to one aspect of the present invention is an electric wire comprising an insulated electric wire and one or more coating layers covering the insulated electric wire, wherein at least one layer of the one or more coating layers is formed from a resin composition containing a thermoplastic polyurethane elastomer and an allophanate crosslinking agent. The electric wire having such a characteristic feature is excellent in abrasion resistance and heat resistance and can be produced at low costs.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for producing an electric wire comprising an insulated electric wire and one or more coating layers covering the insulated electric wire, the method comprising: a step of mixing an A agent containing a thermoplastic polyurethane elastomer and a B agent containing an allophanate crosslinking agent and a thermoplastic polyurethane elastomer or a thermoplastic polyester elastomer, wherein a shape of the A agent is a pellet and a shape of the B agent is a pellet, and thereby obtaining dry-blended pellets of the A agent and the B agent, a step of melting the dry-blended pellets and thereby obtaining a melted resin composition, and a step of coating the insulated electric wire with the melted resin composition. 2. The method according to claim 1 , further comprising a step of crosslinking the melted resin composition after the step of coating. 3. A method for producing a multi-core cable comprising a plurality of insulated electric wires and one or more coating layers covering the plurality of insulated electric wires, the method comprising: a step of mixing an A agent containing a thermoplastic polyurethane elastomer and a B agent containing an allophanate crosslinking agent and a thermoplastic polyurethane elastomer or a thermoplastic polyester elastomer, wherein a shape of the A agent is a pellet and a shape of the B agent is a pellet, and thereby obtaining dry-blended pellets of the A anent and the B agent, a step of melting the dry-blended pellets and thereby obtaining a melted resin composition, and a step of coating wholly the plurality of insulated electric wires with the melted resin composition. 4. The method according to claim 3 , further comprising a step of crosslinking the melted resin composition after the step of coating.
Assignees
Inventors
Classifications
Polyurethanes or polythiourethanes; Polyurea or polythiourea · CPC title
Multi-layer sheaths · CPC title
by extrusion {(extrusion of cables with plastic material in general B29C48/15)} · CPC title
using material resistant to flame · CPC title
natural or synthetic rubbers · CPC title
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Frequently asked questions
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- What does patent US9997279B2 cover?
- The electric wire according to one aspect of the present invention is an electric wire comprising an insulated electric wire and one or more coating layers covering the insulated electric wire, wherein at least one layer of the one or more coating layers is formed from a resin composition containing a thermoplastic polyurethane elastomer and an allophanate crosslinking agent. The electric wire …
- Who is the assignee on this patent?
- Sumitomo Electric Industries
- What technology area does this patent fall under?
- Primary CPC classification H01B7/292. Mapped technology areas include Electricity.
- When was this patent published?
- Publication date Tue Jun 12 2018 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).