Macromolecular material not specifically provided for in a single one of groups [CPC: B01D71/08] - [CPC: B01D71/74] characterised by the presence of specified groups, e.g. introduced by chemical after-treatment
Macromolecular material not specifically provided for in a single one of groups [CPC: B01D71/08] - [CPC: B01D71/74] characterised by the presence of specified groups, e.g. introduced by chemical after-treatment