Modified polyamide membrane

Details Modified polyamide membrane Modified polyamide membrane

2011-03-15

2011-03-15

Soohoo, Tony G (Department: 1777)

Liquid purification or separation

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Material

C210S500370, C210S500100, C210S650000, C210S652000

Reexamination Certificate

active

07905361

ABSTRACT:
A modified polyamide membrane and method for making and using the same. The present invention includes many embodiments including methods comprising contacting a polyamide membrane with certain modifiers, including but not limited to certain oxazoline and/or thiazoline-based compounds, derivatives and polymers thereof. In one embodiment, the surface of a polyamide membrane is coated with a solution including a polyoxazoline and optionally a polyalkylene oxide material, followed by optional heating. Preferred embodiments may exhibit improved performance, e.g. increased rejection of certain species, (e.g. sodium chloride and/or boric oxides such as boric acid or various borate salts), reduced fouling, improved antimicrobial properties, and/or improved storage stability.

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