Patent ID: 8039524

Claim:
A grafting system for use in forming a polymeric coating on a support surface, the system comprising: (a) a nonpolymeric grafting reagent comprising at least one photoinitator group and one or more latent reactive groups, wherein one or more latent reactive groups are adapted to covalently attach the grafting reagent to the surface, and wherein at least one photoinitiator group is selected from: (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 (b) at least one polymerizable molecule solution, wherein the solution is polymerized upon activation of at least one photoinitiator group provided by the reagent.