Membrane post treatment

Details Membrane post treatment Membrane post treatment

2009-12-28

2011-11-15

Greene, Jason M (Department: 1776)

Gas separation: processes

Selective diffusion of gases

Selective diffusion of gases through substantially solid...

C096S004000, C096S011000, C096S013000, C096S014000, C096S054000, C210S490000, C210S640000, C210S650000, C210S651000, C210S500270, C210S500280, C210S500420, C427S244000, C427S245000, C427S331000, C427S430100, C055S524000, C055SDIG007

Reexamination Certificate

active

08057574

ABSTRACT:
The invention relates to polymeric ultrafiltration or microfiltration membranes of, for instance, Halar, PVDF or PP, incorporating PVME or vinyl methyl ether monomers. The PVME may be present as a coating on the membrane or dispersed throughout the membrane or both. The membranes are preferably hydrophilic with a highly asymmetric structure with a reduced pore size and/or absence of macrovoids as a result of the addition of PVME. The PVME maybe cross-linked. The invention also relates to methods of hydrophilising membranes and/or preparing hydrophilic membranes via thermal or diffusion induced phase separation processed.

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