Compositions – Electrically conductive or emissive compositions
Patent
1993-12-21
1994-11-08
Lieberman, Paul
Compositions
Electrically conductive or emissive compositions
5253269, 525389, 524386, 526931, C08J 328, C08K 506
Patent
active
053624203
ABSTRACT:
The present invention discloses a low impedance, water-absorbing, ionically-conductive, hydrophilic pressure sensitive adhesive composition comprising an ionically-conductive, hydrophilic, pressure sensitive adhesive hydrogel and crosslinked poly(N-vinyl lactam) in an amount sufficient to retain low electrical impedance and maintain hydrogel adhesion and cohesion during use of the composition in the presence of water and other moisture tending to plasticize the hydrogel. Crosslinked homopolymers and copolymers of poly(N-vinyl pyrrolidone) having Swelling Capacity of at least 15 milliliters of water per gram of poly(N-vinyl pyrrolidone) are preferred. Adhesion values upon removal from mammalian skin after about four hours of adhesion are not greater than initial adhesion removal values, demonstrating ease of removal of electrodes of the present invention from skin.
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Dietz Timothy M.
Itoh Steven K.
Uy Rosa
Griswold Gary L.
Hornickel John H.
Kirn Walter N.
Lieberman Paul
Minnesota Mining and Manufacturing Company
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