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US 12,564,816 B2Granted
Hydrophilic membranes
AssigneeMerck Millipore Ltd.
InventorsJijun Ge, Xiaozhu Zhou, Gabriel Tkacik
Life of this patent
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Abstract
The present application relates to an unsupported, permanently hydrophilic filtration membrane, and its method of formation. The membrane comprises a polymeric matrix material and a cross-linked polyoxazoline hydrophilic additive blended throughout said matrix material.
Claims17
An unsupported, permanently hydrophilic porous filtration membrane comprising:
- a polymeric matrix material, wherein the polymeric matrix material is one or more polymers selected from the group consisting of polyamides, polyimides, polyether sulphones, polysulphones, polyaryl sulphones, cellulose esters, and polyetherimides, and
- an electron-beam cross-linked polyoxazoline hydrophilic additive blended throughout said matrix material, forming the permanently hydrophilic porous filtration membrane having an extractable total organic carbon content of less than 20 μgC/cm2.
Dependencies are inferred from the claim text.