CPC Subgroup Additional Only
B01D 2239/0414 Surface modifiers, e.g. comprising ion exchange groups
Full Title
Aspects relating to filtering material for liquid or gaseous fluids > Additives and treatments of the filtering material > Surface modifiers, e.g. comprising ion exchange groups
2 direct subcodes
Child Classifications
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- B01D 2239/0421 Rendering the filter material hydrophilic
- B01D 2239/0428 Rendering the filter material hydrophobic