Microporous Film, and Method for Producing Same
US-2023056490-A1 · Feb 23, 2023 · US
Heat stabilized membrane
US2024158589A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2024158589-A1 |
| Application number | US-202218280227-A |
| Country | US |
| Kind code | A1 |
| Filing date | Mar 1, 2022 |
| Priority date | Mar 5, 2021 |
| Publication date | May 16, 2024 |
| Grant date | — |
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- Title
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Abstract
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A dry-process porous membrane having an oxygen induction time (OIT) greater than 3 minutes, greater than 5 minutes, greater than 10 minutes, greater than 15 minutes, greater than 20 minutes, or greater than 25 minutes where OIT is measured at 215° C. and 100% O 2 . The dry-process porous membrane may be a microporous polyolefin membrane.
First claim
Opening claim text (preview).
1 - 25 . (canceled) 26 . A dry-process porous membrane having an oxygen induction time (OIT) greater than 5 min, where OIT is measured at 215° C. and 100% O 2 . 27 . The dry-process porous membrane of claim 26 , wherein the OIT is greater than 10 min. 28 . The dry-process porous membrane of claim 26 , wherein the OIT is greater than 15 min. 29 . The dry-process porous membrane of claim 26 , wherein the OIT is greater than 20 min. 30 . The dry-process porous membrane of claim 26 , wherein the OIT is greater than 25 min. 31 . The dry-process porous membrane of claim 26 , wherein the membrane comprises a polyolefin homopolymer, a polyolefin copolymer, a polyolefin terpolymer, or combinations thereof. 32 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin homopolymer. 33 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin copolymer. 34 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin homopolymer and a polyolefin copolymer. 35 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin terpolymer. 36 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin homopolymer and a polyolefin terpolymer. 37 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin homopolymer, polyolefin terpolymer, and a polyolefin copolymer. 38 . The dry-process porous membrane of claim 31 , wherein the membrane comprises a polyolefin terpolymer and a polyolefin copolymer. 39 . The dry-process porous membrane of claim 26 , wherein the membrane is uniaxially stretched. 40 . The dry-process porous membrane of claim 26 , wherein the membrane is biaxially stretched. 41 . The dry-process porous membrane of claim 26 , wherein the membrane comprises one or more secondary antioxidants. 42 . The dry-process porous membrane of claim 26 , further comprising an antioxidant-containing coating on at least one side thereof. 43 . The dry-process porous membrane of claim 41 , further comprising an antioxidant-containing coating on at least one side thereof. 44 . A composite comprising: the dry-process porous membrane of claim 26 ; and at least one selected from a fabric, a woven, a non-woven, a mesh, or combinations thereof. 45 . The composite of claim 44 , having a 2-layer, 2.5-layer, or 3-layer construction. 46 . A garment comprising the composite of claim 44 . 47 . A garment comprising the dry-process porous membrane of claim 26 . 48 . A personal protective equipment comprising the composite of claim 44 . 49 . A personal protective equipment comprising the dry-process porous membrane of claim 26 . 50 . The dry-process porous membrane of claim 26 , wherein the membrane is 40 or more, 50 or more, or 60 or more inches wide.
Assignees
Inventors
Classifications
Resin or rubber layer containing a blend of at least two different polymers · CPC title
Medical equipment, e.g. bandage, prostheses or catheter · CPC title
Clothing · CPC title
Flame resistant or retardant, fire resistant or retardant · CPC title
3 layers · CPC title
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Frequently asked questions
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- What does patent US2024158589A1 cover?
- A dry-process porous membrane having an oxygen induction time (OIT) greater than 3 minutes, greater than 5 minutes, greater than 10 minutes, greater than 15 minutes, greater than 20 minutes, or greater than 25 minutes where OIT is measured at 215° C. and 100% O 2 . The dry-process porous membrane may be a microporous polyolefin membrane.
- Who is the assignee on this patent?
- Celgard Llc
- What technology area does this patent fall under?
- Primary CPC classification C08J5/18. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu May 16 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).