Patent ID: 9278155
Filing Date: 2016-03-08
CPC Classification: A61L,C08K,C08L,C09J

Claim Text:
1. An adhesive composition comprising: a first polymer comprising a crosslinked poly N-vinyl-2-pyrrolidone present in the composition in an amount of 5% to 35% by weight, wherein the crosslinked poly N-vinyl-2-pyrrolidone has a Swelling Capacity of at least 15 milliliters of water per gram of the crosslinked poly N-vinyl-2-pyrrolidone; an essentially nonvolatile swelling agent present in an amount of 50% to 90% by weight, wherein the swelling agent is selected from the group consisting of polyhydric alcohols; glycerol; polyglycerols; polyhydric alcohol ethoxylates; and combinations of the foregoing; a second modifying polymer swellable and/or soluble in the swelling agent, and present in an amount of 1% to 20% by weight, wherein the second modifying polymer is selected from the group consisting of hydroxypropyl guar; hydroxyethyl cellulose; hydroxypropyl cellulose; hydroxypropyl methylcellulose; polymeric quaternary ammonium salt of hydroxyethyl cellulose reacted with trialkyl ammonium substituted epoxide; copolymers of hydroxyethyl cellulose and dially|dimethyl ammonium chloride; Polyquartenium-2; Polyquaternium-24; cetyl hydroxyethyl cellulose; and combinations of the foregoing; and chlorhexidine gluconate in an amount up to 10% by weight of the total composition; wherein the swelling agent, second modifying polymer, and antimicrobial agent are in essentially unirradiated form; wherein the first polymer forms a pressure sensitive adhesive in the presence of the swelling agent; and wherein the second modifying polymer, swelling agent, and first polymer demonstrate reduced adhesiveness relative to the pressure sensitive adhesive containing the first polymer and swelling agent, while at least maintaining the cohesion of the pressure sensitive adhesive containing the first polymer and swelling agent.