Process for forming membrane having a hydrophobic fluoropolymer

Details Process for forming membrane having a hydrophobic fluoropolymer Process for forming membrane having a hydrophobic fluoropolymer

1995-04-12

1996-09-10

Dudash, Diana

Coating processes

Foraminous product produced

Filter, sponge, or foam

427245, 4273935, 427394, B05D 500

Patent

active

055544142

ABSTRACT:
A composite porous article is formed from a porous polymeric substrate having its entire surface modified with a cross-linked polymer which results in a hydrophobic and oleophobic surface. The composite retains substantially all of the other original properties of the substrate. The cross-linked polymer is formed in situ on the polymeric substrate from a reactant system comprising an ethylenically unsaturated monomer having at least one fluoroalkyl group, a cross-linker, and, if needed, a polymerization initiator, dissolved in a polar solvent system. The porous substrate saturated with the reactant system is exposed to a suitable energy source to effect polymerization and cross-linking of the monomer.

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