Methods For Enhancing The Formation Of Mesophase In Pitch Compositions Derived From Hydrocarbon Feedstocks
US-2024068132-A1 · Feb 29, 2024 · US
Pitch compositions for spinning into carbon articles and methods relating thereto
US12435450B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12435450-B2 |
| Application number | US-202118038410-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 10, 2021 |
| Priority date | Jan 6, 2021 |
| Publication date | Oct 7, 2025 |
| Grant date | Oct 7, 2025 |
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Abstract
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A pitch composition suitable for spinning may comprise: a pitch having a softening point temperature (Tsp) of 400° C. or less, and an oxidation onset temperature (OOT) at least 10° C. below the Tsp at a ramp rate of 10° C./min. A carbon fiber may comprise: a carbon fiber produced from a pitch composition, wherein the pitch composition comprises: a pitch having a softening point temperature (Tsp) of 400° C. or less, and an oxidation onset temperature (OOT) at least 10° C. below the Tsp at a ramp rate of 10° C./min.
First claim
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What is claimed is: 1. A pitch composition suitable for spinning comprising: a pitch having a softening point temperature (T sp ) of 400° C. or less, and an oxidation onset temperature (OOT) at least 10° C. below the T sp at a ramp rate of 10° C./min, wherein the pitch comprises a mesophase content of more than 5 vol %, based on the total volume of the pitch. 2. The pitch composition of claim 1 , wherein the pitch has a volatiles content of 1 wt % or less, based on the total weight of the pitch, at spinning temperature. 3. The pitch composition of claim 1 , wherein the pitch has a second OOT in the range of about 200° C. to 400° C. 4. The pitch composition of claim 1 , wherein the pitch has a maximum critical stress of from 100 Pa to 10,000,000 Pa at spinning temperature, and/or at an extensional strain rate ranging from 0 to 100 s −1 .
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- What does patent US12435450B2 cover?
- A pitch composition suitable for spinning may comprise: a pitch having a softening point temperature (Tsp) of 400° C. or less, and an oxidation onset temperature (OOT) at least 10° C. below the Tsp at a ramp rate of 10° C./min. A carbon fiber may comprise: a carbon fiber produced from a pitch composition, wherein the pitch composition comprises: a pitch having a softening point temperature (Tsp…
- Who is the assignee on this patent?
- Exxonmobil Technology & Engineering Company, Exxon Mobil Tech And Engineering Company
- What technology area does this patent fall under?
- Primary CPC classification D01F9/145. 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).