07300022 is referenced by 77 patents and cites 225 patents.

A porous polymeric membrane formed from a blend of a polymeric membrane forming material, such as polyvinylidene fluoride or polysulfone and a polymeric reactivity modifying agent adapted to modify the surface active properties of the porous polymeric membrane. The reactivity modifying agent is preferably a linear polymeric anhydride, such as poly(alkyl vinyl ether/maleic anhydride). The surface activity modifications include modification of the hydrophilicity/hydrophobicity balance of the membrane, or hydrolysis followed by reaction with a polyamine to form a crosslinked polyamide layer. Such modified membranes have use as reverse osmosis membranes.

Title
Modified membranes
Application Number
10/903950
Publication Number
7300022 (B2)
Application Date
July 30, 2004
Publication Date
November 27, 2007
Inventor
Heinz Joachim Muller
Thornleigh
AU
Assignee
Siemens Water Technologies
PA, US
IPC
B01D 39/0042
B29C 67/20
B29C 65/00
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