Patent US5844058A successfully refreshed from Google Patents.
US5844058A
Expired / Lapsed
US
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Organosiloxane-grafted natural polymer coatings
Assignee: Associated Universities, Inc.
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Filing: 1996-12-17
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Granted: 1998-12-01
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Expires: 2016-12-17
Abstract
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.
Inventors
- 👤 Toshifumi Sugama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:41
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/10; A; A01; A01N; A01N25/00; A01N25/08; A01N25/10; C08B; C08B31/00; C08G; C08G77/00; C08G77/42; C09; C09D; C09D183/00; C09D183/10
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
65 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilyethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-((trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 2
Dependent Claim
65 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilyethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-((trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 3
Independent Claim
66 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine, under conditions of heat catalyzed dehydrating condensation.
Claim 4
Independent Claim
66 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine, under conditions of heat catalyzed dehydrating condensation.
Claim 5
Dependent Claim
17 words
The method of claim 2 wherein said polysaccharide source and said antimicrobial agent are colloidal aqueous solutions.
Claim 6
Dependent Claim
17 words
The method of claim 2, wherein said reaction occurs from about 50° C. to about 250° C.
Claim 7
Dependent Claim
21 words
The method of claim 2, wherein said polysaccharide source is selected from the group consisting of water dispersible starches and cellulosics.
Claim 8
Dependent Claim
35 words
The method of claim 2 wherein said polysaccharide source is from about 60 wt % to about 98 wt % and said antibacterial agent is from about 2 wt % to about 40 wt %.
Claim 9
Dependent Claim
22 words
The polymer of claim 1, wherein said halogen substituted silane is selected from the group consisting of: 3-bromopropyltrimethoxysilane; 3-iodopropyltrimethoxysilane; (3,3,3-trifluoropropyl)trimethoxysilane; (3,3,3-trifluoropropyl)triethoxysilane; tridecafluoro-1,1,2,2-tetrahydrooctyl-1-triethoxysilane.
Claim 10
Dependent Claim
22 words
The method of claim 2, wherein said halogen substituted silane is selected from the group consisting of: 3-bromopropyltrimethoxysilane; 3-iodopropyltrimethoxysilane; (3,3,3-trifluoropropyl)trimethoxysilane; (3,3,3-trifluoropropyl)triethoxysilane; tridecafluoro-1,1,2,2-tetrahydrooctyl-1-triethoxysilane.
Claim 11
Dependent Claim
74 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 12
Dependent Claim
74 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxyxilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 13
Dependent Claim
22 words
The coating of claim 9, wherein said halogen substituted silane is selected from the group consisting of: 3-bromopropyltrimethoxysilane; 3-iodopropyltrimethoxysilane; (3,3,3-trifluoropropyl)trimethoxysilane; (3,3,3-trifluoropropyl)triethoxysilane; tridecafluoro-1,1,2,2-terahydrooctyl-1-1-triethoxysilane.
Claim 14
Independent Claim
91 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxysilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 15
Independent Claim
91 words
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, N 3-(triethoxysilyl)-propyl!-4,5-dihydroimidazole, β-trimethoxysilylethyl-2-pyridine, β-trimethoxysilylethyl-4-pyridine, 2- 2-trichlorosilyl)ethyl!pyridine, and 4- 2-(trichlorosilyl)ethyl!pyridine!, and m and n are ≧500.
Claim 16
Dependent Claim
22 words
The method of claim 11, wherein said halogen substituted silane is selected from the group consisting of: 3-bromopropyltrimethoxysilane; 3-iodopropyltrimethoxysilane; (3,3,3-trifluoropropyl)trimethoxysilane; (3,3,3-trifluoropropyl)triethoxysilane; tridecafluoro-1,1,2,2-tetrahydrooctyl-1-triethoxysilane.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2001-11-30 | 2002-06-01 | 2002-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-11-30 | 2006-06-01 | 2006-12-01 | $3760.00 | Window Closed / Lapsed |
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