Melt-drawn polyamide filaments
US-2021381135-A1 · Dec 9, 2021 · US
Stretched aromatic polyethers
US12091783B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-12091783-B2 |
| Application number | US-201917284151-A |
| Country | US |
| Kind code | B2 |
| Filing date | Oct 17, 2019 |
| Priority date | Oct 17, 2018 |
| Publication date | Sep 17, 2024 |
| Grant date | Sep 17, 2024 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
Stretched filaments based on aromatic polyethers, wherein the filaments have been stretched at a temperature between glass transition temperature and melting point and wherein the filaments are cooled down to below the glass transition temperature under full tensile load and a process for production thereof and use thereof.
First claim
Opening claim text (preview).
The invention claimed is: 1. A stretched filament having a stretch factor greater than or equal to 5, comprising at least 80% by weight of aromatic polyethers, wherein the filament has been stretched at a temperature between glass transition temperature and melting point and wherein the filament has been cooled down to below the glass transition temperature under full load, wherein the aromatic polyethers consists of polyetheretherketone (PEEK). 2. The stretched filament according to claim 1 , wherein the melting temperatures and glass transition temperatures are determined by means of DSC to EN ISO 11357-1:2016D. 3. The stretched filament according to claim 1 , wherein the stretched filaments comprise at least 85% by weight of aromatic polyethers. 4. The stretched filament according to claim 1 , wherein the filaments are fibers or ribbons. 5. The stretched filament according to claim 4 , wherein the filaments are ribbons. 6. A process for producing stretched filament according to claim 1 , wherein the filaments are stretched at a temperature between glass transition temperature and melting point and are then cooled down to below the glass transition temperature under full load. 7. The process according to claim 6 , wherein the melting temperatures and glass transition temperatures are determined by means of DSC to EN ISO 11357-1:2016D. 8. The process according to claim 6 , wherein the stretching proceeds in a static manner. 9. The process according to claim 6 , wherein the cooling takes at least 10 seconds. 10. The process according to claim 6 , wherein the filaments, after the stretching, are cooled down to below 130° C. 11. The process according to claim 6 , wherein just one stretching operation is performed. 12. A composite comprising the stretched filament according to claim 1 . 13. A wound ply comprising at least one stretched filament according to claim 1 . 14. A tube comprising at least one wound ply comprising at least one stretched filament according to claim 1 . 15. The stretched filament according to claim 1 , wherein the stretched filaments comprise at least 90% by weight of aromatic polyethers. 16. The stretched filament according to claim 1 , wherein the stretched filaments consist of polyetheretherketone (PEEK). 17. The stretched filament according to claim 1 , wherein the stretching factor is greater than or equal to 10. 18. The stretched filament according to claim 1 , wherein the filament relaxes by a maximum of 6% in relation to the stretched length.
Assignees
Inventors
Classifications
using rollers, or like mechanical devices, e.g. snubbing pins · CPC title
- D01F6/665Primary
from polyetherketones, e.g. PEEK · CPC title
Heat treatment (heating for finishing D02J13/00) · CPC title
Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones · CPC title
containing ketone groups, e.g. polyarylethylketones, PEEK or PEK · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US12091783B2 cover?
- Stretched filaments based on aromatic polyethers, wherein the filaments have been stretched at a temperature between glass transition temperature and melting point and wherein the filaments are cooled down to below the glass transition temperature under full tensile load and a process for production thereof and use thereof.
- Who is the assignee on this patent?
- Evonik Operations Gmbh
- What technology area does this patent fall under?
- Primary CPC classification D01F6/665. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Sep 17 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).