Shaped flexible pu foam articles
US-2024384050-A1 · Nov 21, 2024 · US
Thermoplastic polyurethane composition with high insulation resistance
US9527998B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9527998-B2 |
| Application number | US-200913503229-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 28, 2009 |
| Priority date | Oct 28, 2009 |
| Publication date | Dec 27, 2016 |
| Grant date | Dec 27, 2016 |
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- Title
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Abstract
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Flame retardant compositions that include a thermoplastic polyurethane, a metal hydrate flame retardant and a phosphorus-based flame retardant are provided. The compositions are characterized by good flame retardant properties, as well as high insulation resistance.
First claim
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The invention claimed is: 1. A composition comprising: (a) 20-40 wt % of a thermoplastic polyurethane; (b) 30-41 wt % of a metal hydrate flame retardant selected from the group consisting of aluminum hydroxide and magnesium hydroxide; and (c) 10-15 wt % of bisphenol A bis(diphenyl phosphate); (d) 0.1-5 wt % of a char-forming agent comprising an epoxidized novolac resin; the wt % based on the total weight of the composition; the composition characterized in that it passes the UL 94 flame retardant standard and has an insulation resistance of at least 3 GΩ.m as measured by UL 62. 2. The composition of claim 1 , in which the composition has an insulation resistance of at least 3.5 GΩ.m as measured by UL 62. 3. The composition of claim 1 , comprising 30 to 40 wt % metal hydrate flame retardant, based on the total weight of the composition. 4. The composition of claim 1 , wherein the metal hydrate flame retardant is an aluminum hydroxide. 5. An insulated electrically conductive wire at least partially coated with the composition of claim 1 . 6. An insulated electrically conductive wire at least partially coated with the composition of claim 3 .
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Frequently asked questions
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- What does patent US9527998B2 cover?
- Flame retardant compositions that include a thermoplastic polyurethane, a metal hydrate flame retardant and a phosphorus-based flame retardant are provided. The compositions are characterized by good flame retardant properties, as well as high insulation resistance.
- Who is the assignee on this patent?
- Lu Lan, Chen Given Jing, Yan Xiaowei Wilson, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification C08L75/04. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Dec 27 2016 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).