Electrically-conductive, pressure-sensitive adhesive and biomedical electrodes

Patent 4848353 Issued on July 18, 1989. Estimated Expiration Date:

September 5, 2006. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventor

Engel, Michael R.

Application

No. 06/902396 filed on 09/05/1986

US Classes:

600/391, Adhesive252/500, ELECTRICALLY CONDUCTIVE OR EMISSIVE COMPOSITIONS427/2.11, Analysis, diagnosis, measuring, or testing product (e.g., specimen preparation, microscope slide smearing)600/397, Electrolyte containing606/32, Electrical application607/152Flexible sheet or resilient pad

Examiners

Primary: Cohen, Lee S.

Attorney, Agent or Firm

International Classes

A61B 5/0408 (20060101)
C09J 4/00 (20060101)
C08F 2/10 (20060101)
C08F 2/04 (20060101)

Abstract

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.