Chemistry: electrical and wave energy – Processes and products – Processes of treating materials by wave energy
Patent
1980-10-08
1982-01-19
Seccuro, Carman J.
Chemistry: electrical and wave energy
Processes and products
Processes of treating materials by wave energy
20415913, 20415916, 20415917, 260 4R, 260 17A, 260174GC, 525245, 525246, 525247, 525262, 525421, 525445, 525455, 525468, 525479, 525529, 525904, C08F 210, C08F29118, C08F29106, C08J 716
Patent
active
043115730
ABSTRACT:
A process for modifying the surface characteristics of a pre-formed polymeric substrate to impart hydrophilicity, hydrophobicity, or other desired properties thereto, by peroxidizing the surface of the substrate and then allowing the active sites along the polymer chains to generate free radicals which induce graft polymerization of a suitable ethylenic monomer (or other ethylenically-unsaturated compound) onto the surface of the substrate is described. Such graft copolymerization is undertaken in the presence of variable valence metal ions in a reduced state under acidic conditions and at selected reaction times and relatively low temperatures, and in the presence of squarate ions (diketocyclobutenediol) to control the physical characteristics of the surface graft and to restore the metal ions to their lower valence state without at the same time producing deleterious by-products.
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Bertrand William J.
Janssen Robert A.
Mayhan Kenneth G.
American Hospital Supply Corporation
Seccuro Carman J.
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