Organosiloxane-grafted natural polymer coatings
AssigneeBrookhaven Science Associates, LLC
InventorToshifumi Sugama
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Abstract
A new family of polysaccharide graft polymers are provided as corrosion resistant coatings having antimicrobial properties which are useful on light metals such as aluminum, magnesium, zinc, steel and their alloys. Methods of making the polysaccharide graft polymers are also included. The methods of making the polysaccharide graft polymers involve reacting a polysaccharide source with an antimicrobial agent under conditions of hydrolysis-condensation.
Claims12
A polysaccharide graft polymer comprising a structure of Formula I or Formula II ##STR10## wherein the polysaccharide is selected from the group consisting of water dispersable starches, cellulose, cellulose esters or cellulose ethers, the segment is provided by an antimicrobial agent selected from the group consisting of halogen substituted silanes, N3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, .beta.-trimethoxysilylethyl-2-pyridine, .beta.-trimethoxyxilyethyl-4-pyridine, 2-2-trichlorosilyl)ethyl!pyridine, and 4-2-((trichlorosilyl)ethyl!pyridine!, and m and n are .gtoreq.500.
A method of making a polysaccharide polymer having a structure of Formula I or Formula II ##STR11## which comprises reacting a polysaccharide selected from a group consisting of water dispersable starches, cellulose, cellulose esters and cellulose ethers with an antimicrobial agent selected from the group consisting of halogen substituted silanes, N3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, .beta.-trimethoxysilylethyl-2-pyridine, .beta.-trimethoxyxilylethyl-4-pyridine, 2-2-trichlorosilyl)ethyl!pyridine, and 4-2-(trichlorosilyl)ethyl!pyridine, under conditions of heat catalyzed dehydrating condensation.
A corrosion resistant coating having antimicrobial properties which comprises a polysaccharide graft polymer having a structure of Formula I or Formula II ##STR12## wherein the polysaccharide is selected from the group consisting of water dispersable starches, cellulose, cellulose esters or cellulose ethers, the segment is provided by an antimicrobial agent selected from the group consisting of halogen substituted silanes, N3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, .beta.-trimethoxysilylethyl-2-pyridine, .beta.-trimethoxyxilylethyl-4-pyridine, 2-2-trichlorosilyl)ethyl!pyridine, and 4-2-(trichlorosilyl)ethyl!pyridine!, and m and n are .gtoreq.500.
A method of rendering a metallic surface of a substrate resistant to corrosion which comprises:
- coating a metallic surface of a substrate with a coating including a polysaccharide graft polymer having the structure of Formula I or Formula II ##STR13## wherein the polysaccharide is selected from the group consisting of water dispersable starches, cellulose, cellulose esters or cellulose ethers, the segment is provided by an antimicrobial agent selected from the group consisting of halogen substituted silanes, N3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, .beta.-trimethoxysilylethyl-2-pyridine, .beta.-trimethoxysilylethyl-4-pyridine, 2-2-trichlorosilyl)ethyl!pyridine, and 4-2-(trichlorosilyl)ethyl!pyridine!, and m and n are .gtoreq.500.
Dependencies are inferred from the claim text.