Adhesive composition resistant to biological fluids

A pressure sensitive adhesive composition particularly suited for use in attaching a male incontinence device to a patient consisting essentially of a substantially homogeneous mixture on a percent weight basis of from about 5% to about 15% by weight of one or more low molecular weight polyisobutylenes or a blend of one or more low molecular weight polyisobutylenes and butyl rubber, from about 10% to about 20% by weight of a styrene block type copolymer selected from the group consisting of styrene-isoprene-styrene and styrene-butadiene-styrene block copolymers, from about 20% to about 40% by weight of mineral oil, from about 25% to about 65% by weight of a water soluble hydrocolloid selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof, up to about 15% by weight of a water swellable cohesive strengthening agent selected from the group consisting of cross-linked sodium carboxymethylcellulose, starch-acrylonitrile graft copolymer, and cross-linked dextran provided that said water soluble hydrocolloids and said water swellable cohesive strengthening agents are together present at from about 25% to about 65% by weight of said composition, from about 7.5% to about 15% by weight of a tackifier, and up to about 0.5% by weight of an antioxidant.

A pressure sensitive adhesive composition particularly suited for use as an ostomy skin barrier consisting essentially of a substantially homogeneous mixture on a percent weight basis of from about 20% to about 30% by weight of one or more low molecular weight polyisobutylenes or a blend of one or more low molecular weight polyisobutylenes and butyl rubber, from about 3% to about 10% by weight of a styrene block type copolymer selected from the group consisting of styrene-isoprene-styrene and styrene-butadiene-styrene block copolymers, from about 9% to about 25% by weight of mineral oil, from about 30% to about 65% by weight of a water soluble hydrocolloid selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixtures thereof, up to about 15% by weight of a water swellable cohesive strengthening agent selected from the group consisting of cross-linked sodium carboxymethylcellulose, starch-acrylonitrile graft copolymer, and cross-linked dextran provided that said water soluble hydrocolloids and said water swellable cohesive strengthening agents are together present at from 30% to about 65% by weight of said composition, from about 7.5% to about 15% by weight of a tackifier, and up to about 0.5% by weight of an antioxidant.

A pressure sensitive adhesive composition particularly suited for use in a wound or burn dressing consisting essentially of a substantially homogeneous mixture on a percent weight basis of from about 5% to about 15% by weight of one or more low molecular weight polyisobutylenes or a blend of one or more low molecular weight polyisobutylenes and butyl rubber, from about 10% to about 20% by weight of a styrene block copolymer selected from the group consisting of styrene-isoprene-styrene and styrene-butadiene-styrene block copolymers, from about 20% to about 40% by weight of mineral oil, from about 30% to about 60% by weight of a water soluble hydrocolloid selected from the group consisting of sodium carboxymethylcellulose, pectin, gelatin, guar gum, locust bean gum, gum karaya, and mixture thereof, up to about 15% by weight of a water swellable cohesive strengthening agent selected from the group consisting of cross-linked sodium carboxymethylcellulose, starch-acrylonitrile graft copolymer, and cross-linked dextran provided that said water soluble hydrocolloids and said water swellable cohesive strengthening agents are together present at from about 30% to about 65% by weight of said composition, from about 7.5% to about 10% by weight of a tackifier, and up to about 0.5% of an antioxidant.

A pressure sensitive adhesive composition particularly suited for use as an ostomy skin barrier consisting essentially of a substantially homogeneous mixture on a percent weight basis of from about 5% to about 30% by weight of a blend of one or more low molecular weight polyisobutylenes and butyl rubber, said polyisobutylenes and butyl rubber blended together on a weight basis of from about 4 parts polyisobutylene to about 1 part butyl rubber to about 1 part polyisobutylene to about 4 parts butyl rubber, from about 3% to about 10% by weight of a styrene-isoprene-styrene block copolymer, from about 9% to about 25% by weight of mineral oil, from about 35% to about 55% by weight of a mixture of more than one of pectin, gelatin, and sodium carboxymethylcellulose, from about 7.5% to about 15% by weight of a tackifier, and up to about 0.5% by weight of an antioxidant.