Patent ID: 8865266

Claim:
A method of coating a porous substrate, the method comprising: (i) providing a substrate, wherein at least one surface of the substrate comprises a plurality of pores; (ii) prior to (iv), forming a first coating on the surface, sufficient to at least partially fill the pores, wherein the first coating comprises a solvent-swollen polymer gel, wherein forming the first coating comprises applying a coating to the surface; and curing the applied coating to form the solvent-swollen polymer gel, the curing comprising at least one of free-radical polymerization, hydrosilylation-curing, condensation-curing, radiation-curing and peroxide curing; (iii) optionally removing the first coating from the surface, sufficient to form a substantially exposed substrate surface with the solvent-swollen polymer gel in the pores; (iv) forming a second coating on the exposed substrate surface, wherein the second coating comprises a polymer, a silicate, any form of carbon, a metal, a metal-organic framework, a ceramic, or a combination thereof; and (v) after (iv), drying the solvent-swollen polymer gel in the pores.