Hair treatment agent, or fiber treatment agent for headwear products
US-2026083660-A1 · Mar 26, 2026 · US
Tuning surface properties of melt blown polyester fibers by hydrolysis and solution grafting
US10227725B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10227725-B2 |
| Application number | US-201515303398-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jan 2, 2015 |
| Priority date | Apr 16, 2014 |
| Publication date | Mar 12, 2019 |
| Grant date | Mar 12, 2019 |
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- Title
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Abstract
Official abstract text for this publication.
Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.
First claim
Opening claim text (preview).
What is claimed is: 1. A method for modifying a polyester and polyester based fiber, comprising subjecting said polyester fiber to alkaline hydrolysis, and further functionalizing the polyester fiber by fluorination in a solution comprising a fluoro-amine compound to obtain a functionalized fiber. 2. The method of claim 1 , wherein the modification of the polyester and polyester based fiber comprises modifying: surface properties including surface topology and surface wetting; and diameter properties including an average fiber diameter and a fiber diameter distribution of the polyester and polyester-based fiber. 3. The method of claim 1 , wherein the polyester fiber comprises poly(butylene terephthalate) (PBT). 4. The method of claim 1 , wherein the hydrolysis produces carboxyl and/or hydroxyl functional groups on the surface of the polyester fiber. 5. The method of claim 1 , wherein the polyester fiber comprises a nonwoven fiber. 6. The method of claim 1 , wherein the polyester fiber comprises a melt-blown nonwoven fiber. 7. The method of claim 1 , wherein the polyester fiber comprises a polymer which comprises at least one ester bond that can be hydrolytically cleaved. 8. The method of claim 1 , wherein the polyester fiber is part of a melt-blown fiber mat comprising PBT and, optionally, poly(ethylene terephthalate) (PET) and/or poly(lactic acid) (PLA). 9. The method of claim 1 , wherein the polyester fiber has a crystallinity of at least 20%.
Assignees
Inventors
Classifications
Hydrophobic properties · CPC title
Polyesters · CPC title
Melt-blown · CPC title
having means for purifying air before leaving crankcase, e.g. removing oil · CPC title
Polyesters · CPC title
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- What does patent US10227725B2 cover?
- Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization…
- Who is the assignee on this patent?
- Cummins Filtration Ip Inc, Univ Minnesota
- What technology area does this patent fall under?
- Primary CPC classification D06M13/33. Mapped technology areas include Textiles & Paper.
- When was this patent published?
- Publication date Tue Mar 12 2019 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 4 related publications on this page (citations in our corpus or others sharing the same primary CPC).