Silicone rubber exhibiting effective antimicrobial activity
First Claim
1. A silicone rubber exhibiting antimicrobial efficacy which comprises:
- a) at least one silicone rubber derived from a curable silicone rubber-forming composition;
b) at least one silver-containing antimicrobial agent incorporated in silicone rubber (a) in X weight percent amount; and
,c) at least one carboxylic acid incorporated in silicone rubber (a) in Y weight percent amount,silver-containing antimicrobial agent (b) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein and carboxylic acid (c) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein imparting no significant antimicrobial activity to silicone rubber (a) but in the combination therein of up to X weight percent silver-containing antimicrobial agent (b) and up to Y weight percent carboxylic acid (c) imparting significant antimicrobial activity to silicone rubber (a), such activity being exhibited at the interface of an exposed surface of silicone rubber (a) and a microbe-populated aqueous material in contact therewith.
17 Assignments
0 Petitions
Accused Products
Abstract
A silicone rubber exhibiting antimicrobial efficacy contains:
a) at least one silicone rubber derived from a curable silicone rubber-forming composition;
b) at least one silver-containing antimicrobial agent incorporated in silicone rubber (a) in X weight percent amount; and,
c) at least one carboxylic acid incorporated in silicone rubber (a) in Y weight percent amount,
silver-containing antimicrobial agent (b) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein and carboxylic acid (c) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein imparting no significant antimicrobial activity to silicone rubber (a) but in the combination therein of up to X weight percent silver-containing antimicrobial agent (b) and up to Y weight percent carboxylic acid (c) imparting significant antimicrobial activity to silicone rubber (a), such activity being exhibited at the interface of an exposed surface of silicone rubber (a) and a microbe-populated aqueous material in contact therewith.
47 Citations
20 Claims
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1. A silicone rubber exhibiting antimicrobial efficacy which comprises:
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a) at least one silicone rubber derived from a curable silicone rubber-forming composition; b) at least one silver-containing antimicrobial agent incorporated in silicone rubber (a) in X weight percent amount; and
,c) at least one carboxylic acid incorporated in silicone rubber (a) in Y weight percent amount, silver-containing antimicrobial agent (b) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein and carboxylic acid (c) when incorporated by itself in silicone rubber (a) in an amount of X+Y weight percent therein imparting no significant antimicrobial activity to silicone rubber (a) but in the combination therein of up to X weight percent silver-containing antimicrobial agent (b) and up to Y weight percent carboxylic acid (c) imparting significant antimicrobial activity to silicone rubber (a), such activity being exhibited at the interface of an exposed surface of silicone rubber (a) and a microbe-populated aqueous material in contact therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A process of imparting efficacious antimicrobial activity to a silicone rubber (a) derived from a curable silicone rubber-forming composition which comprises:
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a) incorporating in the curable silicone rubber-forming composition X weight percent of at least one silver-containing antimicrobial agent (b) and Y weight percent of at least one carboxylic acid (c); and
,b) curing the curable silicone rubber-forming composition to provide silicone rubber (a), silver-containing antimicrobial agent (b) when incorporated by itself in the rubber-forming composition in an amount of X+Y weight percent therein and carboxylic acid (c) when incorporated by itself in the rubber-forming composition in an amount of X+Y weight percent therein imparting no significant antimicrobial activity to silicone rubbers (a) obtained from the curing of the rubber-forming compositions but in the combination of up to X weight percent silver-containing antimicrobial agent (b) and up to Y weight percent carboxylic acid in the rubber-forming composition, imparting significant antimicrobial activity to silicone rubber (a) obtained therefrom, such activity being exhibited at the interface of an exposed surface of silicone rubber (a) and a microbe-populated aqueous material in contact therewith. - View Dependent Claims (18, 19, 20)
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Specification