Functionalized porous membranes and methods of manufacture and use
AssigneeCelgard, LLC
InventorsKristoffer K. Stokes, Karl F. Humiston
Life of this patent
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Abstract
A functionalized microporous, mesoporous, or nanoporous membrane, material, textile, composite, laminate, or the like, and/or a method of making or using such functionalized membranes. The functionalized porous membrane may be a functionalized microporous, mesoporous, or nanoporous membrane that has a functional molecule attached, such as a functional polymer, to the surface and/or internal fibrillar structure of the membrane.
Claims29
A functionalized microporous, mesoporous, or nanoporous membrane comprising a microporous, mesoporous, or nanoporous membrane and a functional molecule attached to an internal fibrillar structure of the membrane, wherein the functional molecule is a functional polymer selected from the group consisting of:
- oleophobic fluoropolymers, acrylic acid, acryloyl chloride, methacrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate, styrene, perfluorostyrene, perfluoro acrylates, semifluoroacrylates, partially fluorinated acrylates, allyl amine, vinyl amine, acrylate esters, and combinations thereof.
A functionalized microporous, mesoporous, or nanoporous membrane comprising a microporous, mesoporous, or nanoporous membrane and a functional molecule attached to an internal fibrillar structure of the membrane via a plasma deposition process, wherein the functional molecule is a functional polymer selected from the group consisting of:
- oleophobic fluoropolymers, acrylic acid, acryloyl chloride, methacrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate, styrene, perfluorostyrene, perfluoro acrylates, semifluoroacrylates, partially fluorinated acrylates, allyl amine, vinyl amine, acrylate esters, and combinations thereof;
- and wherein the functionalized microporous, mesoporous, or nanoporous membrane has an oil repellency of 2-9, 2-6, 3-4, 5-8, or 7-8, after the plasma vapor deposition process.
A method of making a functionalized microporous, mesoporous, or nanoporous membrane, material, textile, composite, fiber, or laminate comprising the steps of:
- providing a membrane;
- functionalizing the membrane with a functional molecule by attaching said functional molecule to an internal fibrillar structure of the membrane wherein the functional molecule is a functional polymer selected from the group consisting of:
- oleophobic fluoropolymers, acrylic acid, acryloyl chloride, methacrylic acid, hydroxyethyl acrylate, hydroxyethyl methacrylate, styrene, perfluorostyrene, perfluoro acrylates, semifluoroacrylates, partially fluorinated acrylates, allyl amine, vinyl amine, acrylate ester, and combinations thereof.
Dependencies are inferred from the claim text.