Adhesives
AssigneeSmith & Nephew, Inc.
InventorIain Webster
Life of this patent
Estimating the term…
Abstract
There are described novel adhesives, which are capable of being “switched” form a tack to a non-tacky state. Such switchable adhesives are especially advantageous when used in medical dressings, and therefore, novel medical dressings comprising a switchable adhesive layer, a removable light occlusive layer and an intermediate transparent or translucent layer are also described.
Claims15
A switchable adhesive composition, having an adhesion which decreases on irradiation with visible light, said adhesive composition comprising an adhesive polymer, an adhesive polymeric moiety and a plurality of bound in visible light curable groups chemically bound to the adhesive polymeric moiety the curing reaction of said curable moieties being initiatable by visible light.
An adhesive medical dressing comprising a backing layer substantially coated on at least one surface thereof with a switchable adhesive composition comprising an adhesive polymeric moiety and a plurality of bound-in curable groups.
A switchable adhesive composition comprising an adhesive polymeric moiety and a plurality of bound-in visible light curable groups, the adhesive polymeric moiety comprising an acrylate adhesive, the acrylate adhesive comprising an alkyl acrylate/alkyl acrylate/acrylic acid tri-copolymer.
Dependencies are inferred from the claim text.