Back to results
US 2010/0059722 A1Published application
Conductive Compositions and Method
AssigneeTyco Healthcare Group LP
InventorsWarren W. Copp-Howland, David Selvitelli
Life of this patent
Estimating the term…
Abstract
Conductive compositions for use with medical electrodes are provided. The conductive compositions utilize a surfactant capable of both reducing the surface tension of the conductive composition as well as increasing the viscosity of the conductive composition. Methods of preparing these conductive compositions are also provided.
Claims28
A conductive composition comprising:
- from about 15 weight % to about 50 weight % of a humectant or a mixture of humectants;
- from about 18% to about 45% of a combination of monomers comprising, in polymerized form, from about 1 wt % to about 20 weight % of a first monomer, in which the first monomer comprises a mixture of an organic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, trans-cinnamic acid, crotonic acid, linoleic acid, linolenic acid, maleic acid, sorbic acid, and combinations thereof, one or more salts thereof, and from about 15 weight % to about 45 weight % of a second monomer, in which the second monomer is one or more monomers of the formula CH2═C(O)XR, in which X is O or NH and R is an unsubstituted or substituted alkyl group of from about 1 to about 5 carbon atoms;
- from about 0.01 weight % to about 0.5 weight % of a surfactant capable of providing the composition with a viscosity of from about 250 cps to about 40,000 cps;
- and
- from about 0.05 weight % to about 7 weight % of a conditioning agent.
2 more elements
A method for forming a conductive composition, comprising the steps of:
- a) preparing a monomer reaction mixture comprising:
- from about 15 weight % to about 50 weight % of a humectant or a mixture of humectants;
- from about 18 weight % to about 45 weight % of a combination of monomers comprising from about 1 weight % to about 20 weight % of an organic acid selected from the group consisting of acrylic acid, methacrylic acid, itaconic acid, trans-cinnamic acid, crotonic acid, linoleic acid, linolenic acid, maleic acid, sorbic acid, one or more salts thereof, and combinations thereof, and from about 15 weight % to about 45 weight % of the sodium salt of 2-acrylamido-2-methylpropane sulfonic acid;
- from about 0.01 weight % to about 0.5 weight % of a surfactant;
- from about 0.05 weight % to about 7 weight % of a conditioning agent;
- and
- (b) polymerizing the monomer or combination of monomers to form a copolymer as the conductive composition having a viscosity of from about 250 cps to about 40,000 cps.
4 more elements
Dependencies are inferred from the claim text.