Carbon fiber precursor treatment agent and carbon fiber precursor
US-2021002820-A1 · Jan 7, 2021 · US
Treatment agent, flame resistant fiber nonwoven fabric, carbon fiber nonwoven fabric, and methods for producing same
US12435464B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12435464-B2 |
| Application number | US-202117631286-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 20, 2021 |
| Priority date | Feb 6, 2020 |
| Publication date | Oct 7, 2025 |
| Grant date | Oct 7, 2025 |
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- Title
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Abstract
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Disclosed is a treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production. The treatment agent contains a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol. Also disclosed is a flame-resistant fiber nonwoven fabric or carbon fiber nonwoven fabric that includes the treatment agent adhered thereto.
First claim
Opening claim text (preview).
The invention claimed is: 1. A treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production, the treatment agent comprising a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol, wherein the treatment agent is free of an organic phosphorous compound, the alcohol comprises an aliphatic alcohol that is trihydric, and the polyether compound has a mass average molecular weight of 13,500 to 40,000, wherein the polyether compound is such that when the molar ratio in total of ethylene oxide and propylene oxide added in the molecule is taken as 100% by mol, ethylene oxide is added at a ratio of 25% to 71% by mol to the alcohol and propylene oxide is added at a ratio of 75% to 29% by mol to the alcohol. 2. A method for producing a flame-resistant fiber nonwoven fabric, the method comprising adhering the treatment agent according to claim 1 to flame-resistant fibers and thereafter obtaining a flame-resistant fiber nonwoven fabric. 3. A method for producing a carbon fiber nonwoven fabric, the method comprising adhering the treatment agent according to claim 1 to carbon fibers and thereafter obtaining a carbon fiber nonwoven fabric. 4. A flame-resistant fiber nonwoven fabric or a carbon fiber nonwoven fabric, comprising a treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production adhered thereto, wherein the treatment agent contains a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol, wherein the treatment agent is free of an organic phosphorous compound, the polyether compound has a mass average molecular weight of 8,000 to 40,000, and the alcohol comprises an aliphatic alcohol that is trihydric, wherein the polyether compound is such that when the molar ratio in total of ethylene oxide and propylene oxide added in the molecule is taken as 100% by mol, ethylene oxide is added at a ratio of 25% to 71% by mol to the alcohol and propylene oxide is added at a ratio of 75% to 29% by mol to the alcohol.
Assignees
Inventors
Classifications
Heat-responsive characteristics · CPC title
Carbon; Pitch · CPC title
Flame or heat resistance, fire retardancy properties · CPC title
Fibres of carbon · CPC title
Acrylonitrile; Methacrylonitrile · CPC title
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Frequently asked questions
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- What does patent US12435464B2 cover?
- Disclosed is a treatment agent for flame-resistant fiber nonwoven fabric production or for carbon fiber nonwoven fabric production. The treatment agent contains a polyether compound in which ethylene oxide and propylene oxide are added to an alcohol. Also disclosed is a flame-resistant fiber nonwoven fabric or carbon fiber nonwoven fabric that includes the treatment agent adhered thereto.
- Who is the assignee on this patent?
- Takemoto Oil & Fat Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification D04H1/4242. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Oct 07 2025 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 5 related publications on this page (citations in our corpus or others sharing the same primary CPC).