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US 2007/0175818 A1Published application
Hydrophilic porous membrane and method of forming the same
AssigneeGM Global Technology Operations LLC
InventorTao Xie
Life of this patent
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Abstract
A method for forming a hydrophilic porous membrane includes applying a crosslinked coating to a hydrophobic porous membrane via an in-situ polymerization process. Polar functional groups are introduced into the coating, thereby forming the hydrophilic porous membrane.
Claims20
A method for forming a hydrophilic porous membrane, comprising:
- applying a crosslinked coating to a hydrophobic porous membrane via an in-situ polymerization process;
- and
- introducing polar functional groups onto the coating, thereby forming the hydrophilic porous membrane.
A hydrophilic porous membrane, comprising:
- a hydrophobic porous membrane;
- a crosslinked coating established on the hydrophobic porous membrane via an in-situ polymerization process;
- and
- polar functional groups established on the coating, the polar functional groups introducing hydrophilicity into the hydrophobic porous membrane.
1 more element
A method of forming a hydrophilic porous membrane, comprising:
- immersing a hydrophobic porous membrane in a mixture including a non-hydrophilic monomer and a crosslinker;
- initiating in-situ polymerization of the mixture, thereby forming a crosslinked coating on the porous hydrophobic membrane;
- and
- soaking the coated porous hydrophobic membrane in concentrated sulfonic acid, thereby introducing hydrophilicity into the porous membrane.
1 more element
Dependencies are inferred from the claim text.