Polyphenylene sulfide short fiber, fibrous structure, filter felt, and bag filter
US-2020324234-A1 · Oct 15, 2020 · US
Polyphenylene sulfide fibers, and manufacturing method therefor
US10138577B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10138577-B2 |
| Application number | US-201515315042-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 22, 2015 |
| Priority date | May 30, 2014 |
| Publication date | Nov 27, 2018 |
| Grant date | Nov 27, 2018 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A poly(phenylene sulfide) fiber contains 1-10% by weight of a poly(phenylene sulfide) oligomer having a weight-average molecular weight of 5,000 or less, has a difference between a cold crystallization heat quantity (ΔHc) and a crystal melting heat quantity (ΔHm) during temperature rising in DSC, ΔHm−ΔHc, of 25 J/g or larger, and has an elongation of less than 40% and a strength of 3.0 cN/dtex or higher. The poly(phenylene sulfide) fiber has high heat resistance and chemical resistance and high strength and, despite this, has excellent suitability for high-order processing, e.g., thermal shapability, because the amorphous parts thereof have high molecular movability.
First claim
Opening claim text (preview).
The invention claimed is: 1. A poly(phenylene sulfide) fiber containing 1-10% by weight of a poly(phenylene sulfide) oligomer having a weight-average molecular weight of 5,000 or less, having a difference between a cold crystallization heat quantity (ΔHc) and a crystal melting heat quantity (ΔHm) during temperature rising in DSC, ΔHm−ΔHc, of 25 J/g or larger, and having an elongation of less than 40% and a strength of 3.0 cN/dtex or higher. 2. The poly(phenylene sulfide) fiber according to claim 1 , wherein the poly(phenylene sulfide) oligomer is a cyclic oligomer.
Assignees
Inventors
Classifications
Heat treatment (heating for finishing D02J13/00) · CPC title
- D01F6/765Primary
from polyarylene sulfides · CPC title
Selection or control of the temperature during stretching · CPC title
of other polycondensation products · CPC title
Melt spinning methods {(D01D5/0023 takes precedence)} · CPC title
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Frequently asked questions
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- What does patent US10138577B2 cover?
- A poly(phenylene sulfide) fiber contains 1-10% by weight of a poly(phenylene sulfide) oligomer having a weight-average molecular weight of 5,000 or less, has a difference between a cold crystallization heat quantity (ΔHc) and a crystal melting heat quantity (ΔHm) during temperature rising in DSC, ΔHm−ΔHc, of 25 J/g or larger, and has an elongation of less than 40% and a strength of 3.0 cN/dtex …
- Who is the assignee on this patent?
- Toray Industries
- What technology area does this patent fall under?
- Primary CPC classification D01F6/765. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Nov 27 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).