Betaine polymer coatings prepared by living polymerization
AssigneeAculon, Inc.
InventorEric L. Hanson
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Abstract
A betaine-containing polymer film that can be formed on a substrate surface using living polymerization such as controlled radical polymerization is disclosed.
Claims38
A self-assembled monolayer (SAM) derived from an organophosphorus acid containing a betaine polymer segment.
A substrate having adhered directly or indirectly through an intermediate organometallic layer to a surface of the substrate a self-assembled monolayer (SAM) being derived from an organophosphorus acid in which the phosphorus acid groups are adsorbed on the substrate surface and the organo groups extend outwardly from the substrate surface and are substituted with a betaine polymer segment.
A process for forming a betaine-containing polymer film on a substrate surface comprising:
- (a) contacting the substrate surface directly or through an intermediate organometallic layer with an organophosphorus acid containing in a terminal portion a phosphorus acid group, and in a second terminal portion, an initiator for living polymerization,
- (b) forming a self-assembled monolayer (SAM) from the compound with the phosphorus acid group being reactive with the substrate surface to bond the organophosphorus acid to the substrate surface and with the initiator extending outwardly from the substrate surface,
- (c) contacting the SAM with a radically polymerizable monomer component comprising at least in part a betaine-containing monomer and a living polymerization catalyst, and
- (d) polymerizing the monomer component with the initiator to form a layer of betaine-containing polymer.
Dependencies are inferred from the claim text.