04473474 is referenced by 100 patents and cites 39 patents.

A cationic charge modified microporous membrane, process for producing said membrane and use thereof are provided. The membrane comprises a hydrophilic organic polymeric microporous membrane and a charge modifying amount of a primary cationic charge modifying agent bonded to substantially all of the wetted surfaces of the membrane. The primary charge modifying agent if a water soluble organic polymer having a molecular weight greater than about 1000 wherein each monomer thereof has at least one epoxide group capable of bonding to the surface of the membrane and at least one tertiary amine or quaternary ammonium group. Preferably, a portion of the epoxy groups on the organic polymer are bonded to a secondary charge modifying agent selected from the group consisting of:

Title
Charge modified microporous membrane, process for charge modifying said membrane and process for filtration of fluid
Application Number
201366
Publication Number
4473474
Application Date
October 23, 1981
Publication Date
September 25, 1984
Inventor
Kenneth C Hou
San Antonio
TX, US
George T Emond
Southington
CT, US
Joseph V Fiore
Fairfield
CT, US
Rodney A Knight
New Milford
CT, US
Eugene A Ostreicher
Farmington
CT, US
Agent
Michael E Zall
David E Dougherty
Assignee
AMF
NY, US
IPC
B01D 13/00
View Original Source