Back to results
US 2011/0207841 A1Published application
Water flux polymer membranes
AssigneeArkema Inc.
InventorsWalter Kosar, Noah E. Macy, Scott C. Schmidt, Jason S. Ness, Jennifer Biscarat
Life of this patent
Estimating the term…
Abstract
The invention relates to a polymer membrane composition having improved water flux and stable pore size. The water flux is improved by increasing the hydrophilicity of the membrane using a matrix polymer blended with controlled architecture amphiphilic block copolymers. Preferred membranes are those having a fluoropolymer matrix and acrylic amphiphilic block copolymers. The addition of the amphiphilic block copolymers are especially useful in microfiltration and ultra filtration membranes when used in water filtration.
Claims20
A polymeric membrane comprising:
- a) 99-20 weight percent of a hydrophobic matrix polymer, and
- b) 1-80 weight percent of an amphiphilic block copolymer having at least one hydrophilic block and at least one hydrophobic block compatible with said polymer matrix.
Dependencies are inferred from the claim text.