Copolymer fibers and yarns and processes for making same
US-9481946-B2 · Nov 1, 2016 · US
Method for removing sulfur from fiber using monovalent salt ion exchange
US9080261B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9080261-B2 |
| Application number | US-201214371535-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 11, 2012 |
| Priority date | Jan 11, 2012 |
| Publication date | Jul 14, 2015 |
| Grant date | Jul 14, 2015 |
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.
The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt having monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions.
First claim
Opening claim text (preview).
What is claimed: 1. A method for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt solution comprising monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions. 2. The method of claim 1 , wherein said polymer comprises derivatives of 5(6)-amino-2-(…
Assignees
Inventors
Classifications
Textiles & Paper · mapped topic
Textiles & Paper · mapped topic
- D01F6/805Primary
Textiles & Paper · mapped topic
Patent family
Related publications grouped by family.
External sources
Next steps
Free tools are coming soon. Tell us what you want to track and we'll notify you.
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9080261B2 cover?
- The present invention concerns methods for removing sulfur from a fiber made from a polymer comprising imidazole groups, said method comprising: a) contacting never-dried sulfate anion containing polymeric-fiber with aqueous salt having monovalent anions to displace at least a portion of the sulfate anions; and b) rinsing the fiber to remove displaced sulfate anions.
- Who is the assignee on this patent?
- Allen Steven R, Gabara Vlodek, Lowery Joseph Lenning, and 3 more
- What technology area does this patent fall under?
- Primary CPC classification D01F6/805. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Jul 14 2015 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).