Patent EP0100591A2 successfully refreshed from Google Patents.
EP0100591A2
Expired / Lapsed
EP
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Film-forming composition containing an antimicrobial agent and methods
Assignee: 3M Co
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Filing: 1983-06-13
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Granted: —
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Expires: 2003-06-13
Abstract
Abstract A dermatologically acceptable, film-forming composition which comprises a film-forming polymer and, as a broad spectrum antimicrobial agent, iodine which forms a complex with the film-forming polymer. The compositions when applied to skin from a fugitive solvent form a substantially water-insoluble, tack-free, flexible film which adheres to skin, releases the antimicrobial agent when the film is in contact with skin, and exhibits an elongation of at least about 150%.
Inventors
- 👤 John D. Minnesota Mining Manf. Company Dell
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-07 00:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/728; A; A01; A01N; A01N59/00; A01N59/12; A61; A61L; A61L26/00; A61L26/0009; A61L26/0019; C08G18/08; C08G18/10; C08G18/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
172 words
A dermatologically-acceptable, film-forming composition, comprising: a) a film-forming polymer which is the reaction product of (i) a prepolymer having a plurality of isocyanate functionalities, said prepolymer being the reaction product of a polyisocyanate and an isocyanate-reactive compound having a plurality of functionalities reactive with said polyisocyanate; (ii) a polyvinylpyrrolidone polymer which is the free-radical polymerization reaction product of at least n-vinyl-pyrrolidone and a vinyl-functional compound; and (iii) a chain-extender for said prepolymer and said polyvinylpyrrolidone polymer; said vinyl-functional compound being further characterized in that it contains a functionality having reactivity with said chain-extender which is substantially equivalent to reactivity of the isocyanate functionalities of said prepolymer with said chain-extender; and b) as an antimicrobial agent, iodine which forms a complex with said film-forming polymer; said composition when applied to skin from a fugitive solvent being capable of forming a substantially water-insoluble, substantially tack-free, flexible film which adheres to skin, releases said antimicrobial agent when said film is in contact with the skin, and exhibits an elongation of between about 150% and 1000%.
Claim 2
Dependent Claim
172 words
A dermatologically-acceptable, film-forming composition, comprising: a) a film-forming polymer which is the reaction product of (i) a prepolymer having a plurality of isocyanate functionalities, said prepolymer being the reaction product of a polyisocyanate and an isocyanate-reactive compound having a plurality of functionalities reactive with said polyisocyanate; (ii) a polyvinylpyrrolidone polymer which is the free-radical polymerization reaction product of at least n-vinyl-pyrrolidone and a vinyl-functional compound; and (iii) a chain-extender for said prepolymer and said polyvinylpyrrolidone polymer; said vinyl-functional compound being further characterized in that it contains a functionality having reactivity with said chain-extender which is substantially equivalent to reactivity of the isocyanate functionalities of said prepolymer with said chain-extender; and b) as an antimicrobial agent, iodine which forms a complex with said film-forming polymer; said composition when applied to skin from a fugitive solvent being capable of forming a substantially water-insoluble, substantially tack-free, flexible film which adheres to skin, releases said antimicrobial agent when said film is in contact with the skin, and exhibits an elongation of between about 150% and 1000%.
Claim 3
Dependent Claim
58 words
A composition in accordance with Claim 1, wherein said prepolymer is the reaction product of a diisocyanate with an isocyanate-reactive compound selected from the group consisting of a diol having a molecular weight of between about 750 and 2500 and a diamine having two primary amine groups and having a molecular weight of between about 750 and 2500.
Claim 4
Dependent Claim
24 words
A composition in accordance with Claim 1, wherein said polyvinylpyrrolidone polymer is the free-radical-polymerization reaction product of n-vinylpyrrolidone and an isocyanate-functional acrylate or methacrylate.
Claim 5
Dependent Claim
23 words
A composition in accordance with Claim 1, wherein said polyvinylpyrrolidone polymer is the free-radical-polymerization reaction product of n-vinyl- pyrrolidone and a vinyl-functional azlactone.
Claim 6
Dependent Claim
43 words
A composition in accordance with Claim 1, wherein said chain-extender contains a plurality of functional groups selected from the group consisting of a hydroxy moiety, a primary amine moiety, a secondary amine moiety and a combination of at least two of the foregoing.
Claim 7
Dependent Claim
28 words
A composition in accordance with Claim 1, wherein said chain-extender is selected from the group consisting of an aliphatic diamine having two primary amine groups and a diol.
Claim 8
Dependent Claim
67 words
A composition in accordance with Claim 1, wherein the weight ratio of the amount of the polyvinylpyrrolidone polymer employed to the amount of the prepolymer employed in preparing said film-forming polymer is from about 2:98 to 20:80 and said chain-extender is employed in the amount of about 0.4 to 1 equivalents per equivalent of the sum total of reactive functionality of said prepolymer and said polyvinylpyrrolidone polymer.
Claim 9
Dependent Claim
37 words
A composition in accordance with Claim 7, wherein the weight ratio of the amount of the polyvinylpyrrolidone polymer employed to the amount of the prepolymer employed in preparing said film-forming polymer is from about 5:95 to 15:85.
Claim 10
Dependent Claim
37 words
A composition in accordance with Claim 8, wherein the weight ratio of the amount of the polyvinylpyrrolidone polymer employed to the amount of the prepolymer employed in preparing said film-forming polymer is from about 7:93 to 12:88.
Claim 11
Dependent Claim
35 words
A composition in accordance with Claim 1, wherein said composition when applied to skin from a fugitive solvent is capable of forming a film which exhibits a tensile strength of at least about 1500 psi.
Claim 12
Dependent Claim
44 words
A composition in accordance with Claim 1, wherein said composition when applied to skin from a fugitive solvent is capable of forming a film which exhibits a tensile strength of at least about 2000 psi and an elongation of between about 200% and 1000%.
Claim 13
Dependent Claim
44 words
A composition in accordance with Claim 1, wherein said composition when applied to skin from a fugitive solvent is capable of forming a film which exhibits a tensile strength of at least about 2500 psi and an elongation of betwen about 250% and 1000%.
References Cited (Backward Citations)
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