초록 ▼

A hydrophobic material having a crosslinked, cationic charge-modifying coating such that the majority of the ion exchange capacity of the material is provided by fixed formal positive charge groups is disclosed. The material is produced by contacting a hydrophobic substrate with a mildly alkaline, a

A hydrophobic material having a crosslinked, cationic charge-modifying coating such that the majority of the ion exchange capacity of the material is provided by fixed formal positive charge groups is disclosed. The material is produced by contacting a hydrophobic substrate with a mildly alkaline, aqueous organic solvent solution into which has been dissolved a cationic charge-modifying agent. The charge-modifying agent comprises a water soluble, organic polymer having a molecular weight of greater than about 1000, wherein the polymer chain contains both fixed formal positive charge groups and halohydrin groups. Materials of the type described herein can be used in a variety of applications including macromolecular blotting and filtration.

대표청구항 ▼

A filtration material which comprises a hydrophobic, microporous membrane coated with a cross-linked, cationic polymer such that the ion exchange capacity of the coated membrane is provided by fixed, formal positive charge groups associated with the polymer, thereby providing a filtration material h

A filtration material which comprises a hydrophobic, microporous membrane coated with a cross-linked, cationic polymer such that the ion exchange capacity of the coated membrane is provided by fixed, formal positive charge groups associated with the polymer, thereby providing a filtration material having both ionic and hydrophobic surface effects.