Polar, lipophilic pressure-sensitive adhesive compositions and medical devices using same
Assignee3M Innovative Properties Company
InventorsKatharina J. Bischof, Wilhelm Kuester, Steven S. Kantner
Life of this patent
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Abstract
A hydrophilic, pressure-sensitive adhesive composition prepared by irradiating solid poly(N-vinyl lactam) with ionizing radiation to crosslink the poly(N-vinyl lactam) and thereafter mixing the radiation-crosslinked poly(N-vinyl lactam) with essentially unirradiated plasticizer in an amount sufficient to form a cohesive, pressure-sensitive adhesive composition. The composition is useful as a biomedical adhesive for transmitting or receiving electrical signals as a component (14) of a biomedical electrode (10).
Claims28
A skin compatible, lipophilic, polar pressure-sensitive adhesive, comprising a hydrophilic polymer matrix and a plasticizer in an amount sufficient to render the matrix cohesive and pressure-sensitive adhesive, wherein the plasticizer comprises a water-soluble polar organic compound and a compatible surfactant or mixture of compatible surfactants present in an amount of at least 9 weight percent of the adhesive, wherein the compatible surfactant has a HLB-value of 10 to 17 or wherein the mixture of compatible surfactants combine to have a HLB-value of 10 to 17.
An adhesive, comprising 10 to 40 weight percent of a hydrophilic, ethylenically unsaturated monomer, 0 to 60 weight percent water, 0 to 80 weight percent of a water soluble, polar organic compound, and at least 9 weight percent compatible surfactant or mixture of compatible surfactants.
Dependencies are inferred from the claim text.