Abstract: An adhesive composition suitable for wound dressing and other medical applications comprising a mixture of polyisobutylene and a rubber polymer selected from the group consisting of random styrene butadiene rubber (SBR) and halobutyl rubber so as to form a rubbery elastomer base matrix, and at least one hydrocolloid. The addition of the SBR or halobutyl rubber to the elastomer base offsets the possible degradation of the polyisobutylene upon sterilization, and therefore, helps to maintain the integrity of the composition. Water soluble hydrocolloid gums and water swellable cohesive strengthening agents are dispersed within the base matrix and may carry a pharmaceutical agent to be dispensed directly to a wound site.

Abstract: A hydrocolloid laminate (10) useful as a wound dressing. The laminate product comprises a lower layer of hydrocolloid adhesive (11), an upper layer of flexible open-cell polymer foam (12), first film layer (13) interposed between the adhesive layer and the foam layer and second film layer (14) provided on the foam layer on the side (17) opposite the first film layer.