Polyamide-based fiber for artificial hair having exceptional dripping resistance upon combustion
US-10385209-B2 · Aug 20, 2019 · US
Fiber for artificial hair and head accessory product
US11873583B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-11873583-B2 |
| Application number | US-201917312985-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 20, 2019 |
| Priority date | Dec 14, 2018 |
| Publication date | Jan 16, 2024 |
| Grant date | Jan 16, 2024 |
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Abstract
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A fiber for artificial hair constituted of a resin composition containing an aliphatic polyamide. A weight average molecular weight Mw of a dissolved component obtained when the fiber for artificial hair is dissolved in hexafluoroisopropanol is 46,000 or more and less than 65,000.
First claim
Opening claim text (preview).
The invention claimed is: 1. A fiber for artificial hair composed of a resin composition containing an aliphatic polyamide, wherein a weight average molecular weight Mw of a dissolved component obtained when the fiber for artificial hair is dissolved in hexafluoroisopropanol is 46,000 or more and less than 65,000, and wherein the resin composition contains an aliphatic polyamide (A) having a weight average molecular weight of 70,000 or more and 150,000 or less and an aliphatic polyamide (B) having a weight average molecular weight of 40,000 or more and or less. 2. The fiber for artificial hair according to claim 1 , wherein a content of the aliphatic polyamide (A) with respect to the entire resin composition is 20% by mass or more and 80% by mass or less, and a content of the aliphatic polyamide (B) with respect to the entire resin composition is 20% by mass or more and 80% by mass or less. 3. The fiber for artificial hair according to claim 1 , wherein the resin composition further contains a semi-aromatic polyamide, and a content of the semi-aromatic polyamide with respect to the entire resin composition is 1% by mass or more and 20% by mass or less. 4. The fiber for artificial hair according to claim 1 , wherein the aliphatic polyamide is at least one selected from the group consisting of polyamide 6 and polyamide 66. 5. A head accessory product using the fiber for artificial hair according to claim 1 .
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Frequently asked questions
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- What does patent US11873583B2 cover?
- A fiber for artificial hair constituted of a resin composition containing an aliphatic polyamide. A weight average molecular weight Mw of a dissolved component obtained when the fiber for artificial hair is dissolved in hexafluoroisopropanol is 46,000 or more and less than 65,000.
- Who is the assignee on this patent?
- Denka Company Ltd
- What technology area does this patent fall under?
- Primary CPC classification D01F6/60. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jan 16 2024 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).