초록 ▼

An electrically-conductive, pressure-sensitive adhesive composition having a polymeric matrix comprised of copolymers of hydrogen bond donating monomer (for example acrylic acid) and hydrogen bond accepting monomers (for example N-vinylpyrrolidone) is disclosed. The polymeric matrix is homogeneously

An electrically-conductive, pressure-sensitive adhesive composition having a polymeric matrix comprised of copolymers of hydrogen bond donating monomer (for example acrylic acid) and hydrogen bond accepting monomers (for example N-vinylpyrrolidone) is disclosed. The polymeric matrix is homogeneously mixed with a electrically-conductive plasticizing solution comprised of from 0% to 98% by weight water-soluble, polar organic compound (for example glycerol), 2% to 100% by weight water, and 0 to 12% by weight water-soluble salt. The compsition contains from about 12% to 50% by weight non-volatile copolymer matrix and the hydrogen bond donating sites on the copolymer matrix are from about 5% to about 95% neutralized. Free radical polymerization methods of making the composition and biomedical electrodes incorporating the composition are also described.

대표청구항 ▼

A composition comprising: a conformable, cohesive, adhesive copolymer matrix formed by free radical polymerizing an adhesive precursor comprising a carboxylic acid as a water-soluble hydrogen bond donating monomer, N-vinyl pyrrolidone as a water-soluble hydrogen bond accepting monomer, and a polymer

A composition comprising: a conformable, cohesive, adhesive copolymer matrix formed by free radical polymerizing an adhesive precursor comprising a carboxylic acid as a water-soluble hydrogen bond donating monomer, N-vinyl pyrrolidone as a water-soluble hydrogen bond accepting monomer, and a polymerization initiator, wherein the molar ratio of hydrogen bond accepting sites to hydrogen bond donating sites available on the monomers is from about 1:3 to about 6:1 and wherein the weight ratio of carboxylic acid to N-vinyl pyrrolidone is from about 1:2 to about 3:1; and a plasticizing, electrically-conductive solution comprised of from about 0 to 98% by weight water-soluble, polar organic compound, about 2 to 100% by weight water, and about 0 to 12% by weight water-soluble salt; wherein the composition contains from about 12% to about 50% by weight non-volatile copolymer matrix, the hydrogen bond donating sites on the copolymer matrix are from about 5% to about 80% neutralized, and the composition is substantially homogeneous and pressure-sensitive adhesive. A biomedical electrode comprising: an electrical conductor, means integrally associated with the conductor for connecting the electrode to an electromedical instrument, an electrically-conductive, pressure-sensitive adhesive in electrical contact with the conductor comprising a conformable, cohesive, adhesive copolymer matrix formed by free radical polymerizing an adhesive precursor comprising a carboxylic acid as a water-soluble hydrogen bond donating monomer, N-vinyl pyrrolidone as a water-soluble hydrogen bond accepting monomer, and a polymerization initiator, wherein the molar ratio of hydrogen bond accepting sites to hydrogen bond donating sites available on the monomers is from about 1:3 to about 6:1 and wherein the weight ratio of carboxylic acid to N-vinyl pyrrolidone is from about 1:2 to about 3:1, and a plasticizing, electrically-conductive solution comprised of from about 0 to 98% by weight water-soluble, polar organic compound, about 2 to 100% by weight water, and about 0 to 12% by weight water-soluble salt; wherein the electrically-conductive, pressure-sensitive adhesive contains from about 12% to about 50% by weight non-volatile copolymer matrix, the hydrogen bond donating sites on the copolymer are from about 5% to about 80% neutralized, and the composition is substantially homogeneous and pressure-sensitive adhesive.