Method for producing pressure sensitive poly (N-vinyl lactam)
First Claim
1. A method of preparing a hydrophilic, pressure-sensitive adhesive composition comprising steps of:
- (a) irradiating non-crosslinked poly(N-vinyl lactam) while in a solid form unmixed with plasticizer, with ionizing radiation to crosslink the solid poly(N-vinyl lactam), and(b) mixing the solid, radiation-crosslinked poly(N-vinyl lactam) with an essentially unirradiated plasticizer in an amount sufficient to form a cohesive and pressure-sensitive adhesive composition.
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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 of a biomedical electrode. The composition is also useful as a drug delivery device to deliver pharmaceuticals or other active ingredients to or through mammalian skin. The composition is also useful as a component in a skin covering for protecting mammalian skin Or mammalian skin openings with antimicrobial agents. A method of preparation of the composition is also disclosed.
133 Citations
7 Claims
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1. A method of preparing a hydrophilic, pressure-sensitive adhesive composition comprising steps of:
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(a) irradiating non-crosslinked poly(N-vinyl lactam) while in a solid form unmixed with plasticizer, with ionizing radiation to crosslink the solid poly(N-vinyl lactam), and (b) mixing the solid, radiation-crosslinked poly(N-vinyl lactam) with an essentially unirradiated plasticizer in an amount sufficient to form a cohesive and pressure-sensitive adhesive composition. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification