Patent ID: 7736689

Claim:
A method of forming a polymeric coating on a support surface, the method comprising: a) providing a porous support surface; b) providing a nonpolymeric grafting reagent comprising at least one photoinitator group selected from the group consisting of: i) tetrakis(4-benzoylbenzyl ether), the tetrakis(4-benzoylbenzoate ester) of pentaerytluitol, and an acylated derivative of tetraphenylmethane, ii) 4,5-bis(4-benzoylphenylmethyleneoxy)benzene-1,3-disulfonic acid dipotassium salt (DBDS), 2,5-bis(4-benzoylphenylmethyleneoxy)benzene-1,4-disulfonic acid dipotassium salt (DBHQ), and 2,5-bis(4-benzoylphenylmethyleneoxy)benzene-1-sulfonic acid mono (or di-) sodium salt; and iii) ethylenebis(4-benzoylbenzyldimethylammonium)dibromide (Diphoto-Diquat); hexamethylenebis(4-benzoylbenzyldimethylammonium)dibromide (Diphoto-Diquat); 1,4-bis(4-benzoylbenzyl)-1,4-dimethylpiperazinediium dibromide (Diphoto-Diquat); bis(4-benzoylbenzyl)hexamethylenetetraminediium dibromide (Diphoto-Diquat): bis[2-(4-benzoylbenzyldimethylammonio)ethyl]-4-benzoylbenzylmethylammonium tribromide (Triphoto-Triquat): 4,4-bis(4-benzoylbenzyl)morpholinium bromide (Diphoto-Monoquat); ethylenebis[(2-(4-benzoylbenzyldimethylammonio)ethyl)-4-benzoylbenzylmethylammonium]tetrabromide (Tetraphoto-Tetraquat); 1,1,4,4-tetrakis(4-benzoylbenzyl)piperazinediium Dibromide (Tetraphoto-Diquat); and N,N-bis[2-(4-benzoylbenzyloxy)ethyl]-2-aminoethanesulfonic acid, sodium salt (Diphoto-Monosulfonate), and analogues thereof; and c) providing at least one polymerizable monomer solution adapted to be contacted with the surface, in the presence of the grafting reagent, and to be polymerized upon activation of the photoinitiator; and d) applying the grafting reagent and monomer solution to the surface in a manner, and under conditions, suitable to coat the surface with the grafting reagent and to cause the polymerization of monomers to the surface upon activation of the grafting reagent.