JPH01277536A - Self-bondable conductor for electrode - Google Patents

Abstract

PURPOSE:To obtain a conductor excellent in stickiness and conductivity and certainly fixed to the skin, by reacting gelatin with an N-hydroxyimide ester compound. CONSTITUTION:Gelatin and an N-hydroxyimide ester compound are reacted in the presence of a flawability holding agent having conductivity or in the presence of the flowability holding agent and a conductive filler to obtain an addition product which is, in turn, used as a self-bondable conductor for an electrode. Herein, any gelatin occurring from an arbitrary source can be used. The N-hydroxyimide ester compound functions as the crosslinking agent to the amino group of gelatin and performs crosslinking reaction in an aqueous solution at ambient temp. to polymerize gelatin to form a good gel.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a self-adhesive conductor for electrodes having conductivity and adhesiveness, and more specifically, it is used for tests such as electrocardiograms, low frequency therapy, antistatic, etc. 6. Related to self-adhesive conductors for electrodes used by pasting them on the skin [Prior art] Many self-adhesive conductors having conductivity and adhesive properties are known for use in electrodes to be pasted on the skin. For example, acrylic/epoxy polymer (JP-A No. 61-23670),
Examples include a polyacrylamide/sucrose matrix (Japanese Patent Application Laid-Open No. 61-22839), to which inorganic salts and the like are added as necessary to obtain the required conductivity.

[Problem to be solved by the invention]

However, conventional self-adhesive conductors with conductivity and adhesive properties for use in electrodes applied to the skin do not have sufficient adhesive strength, making it difficult to fix electrodes using these self-adhesive conductors to the skin. In this case, there were problems such as the need for other adhesives and adhesive tapes.

An object of the present invention is to provide a self-adhesive conductor for the W1 pole, which has both excellent adhesiveness and conductivity and can firmly adhere to the skin, in order to solve the above-mentioned problems. be.

[Means to solve the problem]

The present invention is a self-adhesive conductor for primary electrodes.

(1) In a self-adhesive conductor for electrodes having conductivity and adhesiveness, an addition product obtained by reacting gelatin and an N-hydroxyimide ester compound in the presence of a fluidity-maintaining agent having conductivity. A self-adhesive conductor for electrodes, characterized by comprising:

(2) In a self-adhesive conductor for electrodes having conductivity and adhesiveness, an addition product obtained by reacting gelatin and an N-hydroxyimide ester compound in the presence of a fluidity-preserving agent and a conductive filler. A self-adhesive conductor for electrodes, characterized by comprising:

Gelatin used in the present invention is not particularly limited, and gelatin of any origin can be used.

The N-hydroxyimide ester compound used in the present invention is used as a crosslinking agent and has the following general formula [1]
This is a compound represented by

(However, in the formula, X is a residue of a compound having 2 to 6 carbon atoms and 2 to 6 hydroxyl groups.

A is 1 to 3 groups selected from oxyethylene group, oxypropylene group, and oxybutylene group, Y is a dibasic acid residue, Z is and partially substituted product thereof, and partially substituted product thereof, and partially substituted product thereof A group selected from \ / and partially substituted products thereof, \ and partially substituted products thereof, \ and partially substituted products thereof, and \ H and partially substituted products thereof.

m represents 1 to 3000, and n represents 2 to 6. ) In the general formula (1), X has 2 to 6 carbon atoms, and 2 to 6
Compounds with hydroxyl groups, such as ethylene glycol,
Propylene glycol, glycerin.

Diglycerin, trimethylolethane, trimethylolpropane, erythritol, pentaerythritol, sorbitol, mannitol, glucose, mannose,
It is an alcohol residue generated from xylose, sorbitan, etc., and n corresponds to a value of 2 to 6.

A is a group selected from oxyethylene group, oxypropylene group, oxybutylene group, polymer units thereof, and 2 to 3 types of copolymer units.

m indicates the average number of moles added.

Y is a dibasic acid 1 such as oxalic acid, malonic acid, succinic acid,
Glutaric acid, adipic acid, pimelic acid, corkic acid, azelaic acid, sepathic acid, nonane-dicarboxylic acid, decane-dicarboxylic acid, undecane-dicarboxylic acid, isosuccinic acid, methylsuccinic acid, ethylmalonic acid, dimethylmalonic acid, malic acid, Tartronic acid, maleic acid, fumaric acid, oxalacetic acid, tartaric acid, mesooxalic acid, acetonedicarboxylic acid, citraconic acid, mesaconic acid, itaconic acid,
Phthalic acid, isophthalic acid, terephthalic acid, homophthalic acid, hexahydrophthalic acid, tetrahydrophthalic acid, dihydrophthalic acid, 0-phenylene diacetic acid, Tsuru-phenylene diacetic acid, P-phenylene diacetic acid, 0-phenylene diacetic acid-
β-propionic acid, naphthalene-2,3-dicarboxylic acid, naphthalene-1,2-dicarboxylic acid, naphthalene-1
, 8-dicarboxylic acid, diphenic acid, aspartic acid, glutamic acid, α-ketoglutaric acid, α-oxyglutaric acid, and other dibasic acid residues.

In addition to the structures of the above formulas (ff3 to [■]), Z is a partial substituted product thereof, for example, in the case of formula (n), HO/Shrimp 0, in the case of formula (V), in the case of formula (VI), the formula [■] ] indicates the structure of an acid imide such as .

The compound of the general formula CI) having each of the above structures reacts specifically with an amino group, liberates an imidoxy group, and forms an addition product with an amino group, so that it reacts with the amino group of gelatin as shown in the example below. It acts as a crosslinking agent for gelatin, performs a crosslinking reaction in an aqueous solution at room temperature, and polymerizes gelatin to form a good gel.

In the above reaction, X is ethylene glycol.

In the case of an alcohol residue derived from a diol such as propylene glycol, n is 2 and the compound of the general formula [■] becomes a bifunctional crosslinking agent and forms a relatively soft gel. In addition, when X is an alcohol residue generated from a polyol such as pentaerythritol or sorbitol, n is 4 or 6, and the compound of general formula (1) becomes a polyfunctional crosslinking agent, and when a gel is made using these, Forms a rigid gel with high crosslink density. When n is 7 or more, the gel formed does not exhibit stickiness.

Furthermore, when A is an oxyethylene group, the hydrophilicity of the crosslinking agent is greater than when A is an oxypropylene group or an oxybutylene group. , oxypropylene group, oxybutylene group 3
In the case of the above copolymer, the hydrophilicity can be changed by the ratio of each component, so the degree of hydrophilicity of the gel can be adjusted by this.

m can range from 1 to 3,000, but the smaller m is, the higher the crosslinking density per unit weight of the compound of general formula (1) is. ) The tree parentness of the compound becomes smaller at 6 m = 3000
If it exceeds this, the imidoester moiety in the compound of general formula [11] becomes too small, and its action as a crosslinking agent becomes extremely small, making it unsuitable for practical use.

Note that the dibasic acid having Y as a residue is arbitrarily selected from the viewpoint of ease of esterification with an oxyalkylene adduct of alcohol and an acid imide.

In addition, as an acid imide, the partial structure of Z is the general formula [11]
and its partially substituted phthalimide, general formula (V
) and its partially substituted product, maleimide, and general formula (VI) and its partially substituted product, succinimide, are desirable because they are easy to produce industrially and are inexpensive.

The fluidity-maintaining agent used in the present invention slows down the rate at which an aqueous solution of heated and dissolved gelatin gradually solidifies as the temperature decreases, lowers the solidification temperature and maintains fluidity, and furthermore, the gelatin and N-hydroxyimide After reacting with the ester compound, it is a compound that has the effect of dispersing in the addition product gel and imparting tackiness, and is stable as an aqueous solution. Such fluidity retaining agents include, for example, potassium chloride, sodium chloride, calcium chloride, magnesium chloride, magnesium/ammonium chloride, ammonium chloride, zinc chloride, zinc chloride/ammonium,
Manganese chloride, barium chloride, nickel chloride, lithium chloride, cobalt chloride, aluminum chloride, antimony chloride, tin (II) chloride, tin chloride (fV), titanium (II) chloride, titanium (IV) chloride, iron chloride (n) , inorganic compounds containing chlorine such as iron (III) chloride, copper (II) chloride, potassium bromide, sodium bromide, calcium bromide,
Magnesium bromide, ammonium bromide, zinc bromide, manganese bromide, barium bromide, nickel bromide, lithium bromide, aluminum bromide, tin(II) bromide, iron bromide (If
), iron bromide (■).

Inorganic compounds containing bromine such as copper bromide (n), potassium nitrate, sodium nitrate, calcium nitrate, ammonium nitrate, zinc nitrate, barium nitrate, nickel nitrate, aluminum nitrate, cobalt nitrate, magnesium nitrate, manganese nitrate, lithium nitrate, iron nitrate (II), iron nitrate (III
), inorganic compounds containing nitrate groups such as silver nitrate and copper nitrate; inorganic compounds containing thiocyanate groups such as potassium thiocyanate, sodium thiocyanate, calcium thiocyanate, ammonium thiocyanate, barium thiocyanate, and iron(III) thiocyanate. or non-electrolytes such as resorcinol, hydroquinone, pyrocatechin, pyrogallol, furfural, urea, ethanol, methanol-denatured ethanol, isopropanol, chlorobutanol, and erythritol.

These can be used alone or in combination of two or more.

Among these fluidity-maintaining agents, some soluble salts have conductivity, so by using them alone,
Viscosity and conductivity can be imparted to a gel that is an addition product of gelatin and an N-hydroxyimide ester compound. In order to impart electrical conductivity to non-electrolyte materials, it is necessary to use them together with a fluidity-maintaining agent or conductive filler that has electrical conductivity.

That is, among the fluidity-maintaining agents used in the present invention, soluble salts and the like exhibit sufficient conductivity in an aqueous solution state, so there is no particular need to use a conductive filler. However, among fluidity-maintaining agents, non-electrolytic ones have no conductivity in the aqueous state, and even if the amount of soluble salts added is small, sufficient conductivity cannot be obtained. It is necessary to use a conductive filler as a conductivity imparting agent.

The conductive filler used in the present invention includes carbon,
Carbon such as graphite, metal powders, flakes, and fibers such as gold, silver, copper, aluminum, nickel, iron, tin, and lead, as well as metal coated glass and conductive ZnO1S.
A wide range of conductive materials can be used, such as nO, coated Tie, SnO, and ultrafine powder. These can be used alone or in combination of two or more.

When these conductive fillers are used in combination with the fluidity-maintaining agent, they are used within a range that can impart the necessary conductivity to the resulting gel. These conductive fillers need to be uniformly dispersed in the gel, and for this purpose, they can be added to the gelatin, N-hydroxyimide ester compound, or their reaction system before the gel is formed. It is preferable to carry out

By using a conductive filler, it is easy to adjust the conductive properties of a self-adhesive conductor, so there is greater freedom in the type and amount of fluidity-preserving agent, and it is possible to create a self-adhesive conductor that achieves both optimal self-adhesive properties and conductive properties. An adhesive conductor can be obtained.

In the present invention, in addition to the above-mentioned components, hydrophilic solvents, additives, pH adjusters, etc. can be used as necessary.

The hydrophilic solvent is a hydrophilic solvent that has the effect of improving water retention and adhesiveness of the self-adhesive conductor, such as methyl alcohol, ethyl alcohol, normal propyl alcohol, isopropyl alcohol, normal butyl alcohol, isobutyl alcohol, 2-butyl alcohol, tertiary-butyl alcohol, normal amyl alcohol, isoamyl alcohol,
Activated amyl alcohol, 27th mil alcohol, diethyl carbinol, 37th mil alcohol, fusel oil,
Bentazole, normal hexyl alcohol, methyl amyl alcohol, ethyl butyl alcohol, heptyl alcohol, methyl amyl carbinol, 3-heptatool, dimethylpentanol, normal octyl alcohol, secondary octyl alcohol, ethylhexyl alcohol, inoctyl alcohol.

Ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, butylene glycol-1,4, butylene glycol-2,3,2-methyl-2,4-bentanediol, 2-ethyl-1 ,3
-hexanediol, glycerin, benzyl alcohol, methylphenylcarbinol, cyclohexanol,
Alcohols such as methylcyclohexanol, trimethylcyclohexanol, furfuryl alcohol, tetrahydrofurfuryl alcohol; methyl ether, ethyl ether, isopropyl ether, ethyl butyl ether.

Butyl ether, ethylene glycol monomethyl ether, ethylene glycol monoethyl ether, ethylene glycol diethyl nityl, ethylene glycol monobutyl ether, ethylene glycol dibutyl ether, ethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, ethylene glycol monoethylhexyl ether, diethylene glycol monomethyl ether , diethylene glycol monoethyl ether, diethylene glycol diethyl ether, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, propylene glycol heptabutyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene Glycol monomethyl ether, tetraethylene glycol dimethyl ether, tetraethylene glycol dibutyl ether, methylal, acetal, ethylene oxide, propylene oxide, dioxane, dimethyl dioxane,
Ethers such as trioxane, dioxolane, methyldioxolane, tetrahydrofuran, tetrahydropyran, tylbinyl methyl ether, tylbinyl ethylene glycol ether; polyethers such as polyethylene glycol and polypropylene glycol; ketones such as acetone, methyl ethyl ketone, diacetone alcohol; ethyl acetate, Esters such as butyl acetate, ethylene glycol monoethyl ether acetate, ethyl propionate, methyl benzoate; other crotonaldehyde,
Hydrophilic solvents such as aldol, dimethyl formaldehyde, dimethyl sulfoxide, and N-methylpyrrolidone; polyhydric alcohols such as neopentyl glycol, sorbitol, pentaerythritol, and trimethylolpropane; and natural polysaccharides such as dextrin are used.

The hydrophilic solvent is not limited to those exemplified above as long as it has the above effects, and other solvents can also be used, and these can be used alone or in a mixture of two or more.

Furthermore, additives used as necessary in the present invention include, for example, cationic, anionic, and nonionic surfactants; antibacterial and magnetic agents such as imidazole derivatives, amino acid derivatives, and halogen derivatives; polyvinyl alcohol, gum arabic, etc. , polyacrylic acid, polybutene, ester gum, carboxymethylcellulose, and other physical property modifiers.

For further P)l adjustment, pl+ regulators such as sodium hydroxide, sodium bicarbonate, hydrogen chloride, acetic acid, carbonic acid, etc. can be used.

The gelatin used in the present invention has fluidity in a hot aqueous solution at 60 to 80°C, but solidifies when cooled to room temperature. However, if an appropriate amount of fluidity-preserving agent is mixed into this aqueous solution,
Fluidity can be maintained even after cooling to room temperature. Then, when an N-hydroxyimide ester compound is added to the gelatin aqueous solution.

A cross-linking reaction forms a self-adhesive gel.

If the fluidity-maintaining agent is a soluble salt, it will exhibit conductivity as it is, and if the amount of soluble salt added is small or the fluidity-maintaining agent is a non-electrolyte, a conductive filler should be used. conductivity can be imparted by this.

The blending amount of gelatin is 1 to 83% by weight in the self-adhesive conductor,
Preferably it is 3 to 30% by weight. If it is less than 1% by weight, no gel will be formed, and if it exceeds 83% by weight, it will be difficult to obtain a gelatin aqueous solution with fluidity.

The amount of the N-hydroxyimide ester compound as a crosslinking agent is 0.01 to 20% by weight, preferably 0.1 to 1% by weight.
0 weighted view% full amount. The blending amount of the fluidity maintaining agent is 1 to 50% by weight, preferably 3 to 30% by weight. The amount of the conductive filler is 1 to 30% by weight, preferably 3 to 20% by weight.

The self-adhesive conductor for electrodes of the present invention is generally manufactured by the following method.

First, gelatin is dissolved in warm water, and a fluidity-preserving agent is added to it.
A conductive filler, a hydrophilic solvent, additives, etc. are mixed as necessary to form the main ingredient. Then, the separately synthesized N-hydroxyimide ester compound is placed in a container separate from the main ingredient, and
It is used as a curing agent or mixed with a portion of a hydrophilic solvent as needed. Next, the base material and the curing agent are mixed and applied onto the electrode terminal member by coating, impregnating, dipping, or the like. Then, the coating liquid becomes gelatinous at low temperature or in a heated state, and a self-adhesive conductor is completed.

The electrode terminal member is used to electrically connect a lead wire to a self-adhesive conductor that directly adheres to the skin and transmits an electrical signal, and to physically support the self-adhesive conductor. For example, metal sheets, metal foils, metal nets, conductive laminates made by bonding metal foil with paper or plastic sheets, plastic sheets with metal vacuum-deposited or plated, non-woven fabrics, nets, and other conductive materials. A wide variety of materials can be used.

The self-adhesive conductor formed on these electrode terminal members includes a fluidity retaining agent having conductivity in the gel, which is an addition product.
Alternatively, the fluidity retaining agent and conductive filler are dispersed to provide excellent adhesiveness and conductivity.

Therefore, the electrode terminal member obtained above and the self-adhesive conductor adhered thereto can be used as a skin electrode for electrocardiogram measurements, etc., and the self-adhesive conductor can be applied to the skin and energized from the electrode terminal member. , or an electrical signal can be extracted.

〔Effect of the invention〕

Since the self-adhesive conductor obtained by the present invention has high adhesiveness and conductivity, electrodes for skin application using this material can be applied to the measurement site without using any other adhesive or adhesive tape for fixation. It can be used to energize or extract electrical signals.

In addition, this self-adhesive conductor is derived from natural products and has a soft and warm feel, so it does not feel uncomfortable when worn like metal electrodes or synthetic polymers, and does not put pressure on the subject. , can be measured under normal conditions.

〔Example〕

Hereinafter, the present invention will be specifically explained with reference to Examples and Comparative Examples. In each example, % is by weight.

Production Example 1 Polyethylene glycol with an added mole number of 6001 moles,
Crosslinking agent 1 was prepared by reacting 2 moles of maleic anhydride to produce a half ester, and reacting this with 2 moles of N-hydroxysuccinimide.

■ Production Example 2 Polypropylene glycol ether of glycerin obtained by addition-polymerizing 105 moles of propylene oxide to 1 mole of glycerin is reacted with 3 moles of phthalic anhydride to produce a half ester, and 3 moles of N-hydroxy Crosslinking agent 2 was prepared by reacting phthalimide.

Production Example 3 Polyethylene glycol ether of pentaerythritol obtained by addition polymerizing 200 moles of ethylene oxide to 1 mole of pentaerythritol is reacted with 4 moles of citraconic anhydride to produce a half ester, and this is mixed with 4 moles of N-hydroxy Crosslinking agent 3 was prepared by reacting maleimide.

Production Example 4 To polypropylene glycol with an added mole number of 301 moles,
Crosslinking agent 4 was prepared by reacting 2 moles of succinic anhydride to produce a half ester, and reacting this with 2 moles of N-hydroxyglutaconimide.

υ Production Example 5 A half ester is produced by reacting 5 moles of tartaric anhydride with a glucose polyoxyalkylene glycol ether compound obtained by addition polymerizing a mixture of 25 moles of ethylene oxide and propylene oxide to 1 mole of glucose. Crosslinking agent 5 was prepared by reacting this with 5 mol of N-hydroxyglutarimide.

Examples 1 to 6 Based on Table 1, water was added to gelatin to swell it at room temperature, and then heated to 60 to 70°C, stirred, and dissolved to obtain a warm gelatin aqueous solution. Next, a fluidity maintaining agent, a hydrophilic solvent, and an additive were sequentially added and stirred to make the mixture uniform. Further, a pH adjuster (37% aqueous hydrochloric acid solution or 4% aqueous sodium hydroxide solution) was added as appropriate to adjust the pH to the values shown in Table 3 to obtain a main ingredient.

The crosslinking agent was weighed out separately from the main agent, and then a hydrophilic solvent was added and stirred to dissolve it, to obtain a curing agent. Then, the base agent and the curing agent were mixed to form a coating liquid, which was applied to the electrode terminal members shown in Table 1 to complete the crosslinking reaction to obtain an electrode for application to the skin.

Examples 7 to 12 Based on Table 2, water was added to gelatin to swell it at room temperature, and then heated to 60 to 70°C, stirred, and dissolved to obtain a warm gelatin aqueous solution. Next, a fluidity maintaining agent, a conductive filler, a hydrophilic solvent, and an additive were sequentially added and stirred to make the mixture uniform. Furthermore, a pH adjuster (37% hydrochloric acid aqueous solution or 4% sodium hydroxide aqueous solution) is added as appropriate to adjust the pH to a third level.
A main ingredient was obtained by adjusting the values shown in the table.

The crosslinking agent was weighed out separately from the main agent, and then a hydrophilic solvent was added and stirred to dissolve it, to obtain a curing agent. Then, the base agent and the curing agent were mixed to form a coating liquid, which was applied to the electrode terminal members shown in Table 2 to complete the crosslinking reaction to obtain an electrode for application to the skin.

Comparative Example 1 Based on the formulation shown in Table 1, a main ingredient was obtained in the same manner as in Example 1, except that no fluidity maintaining agent was used.

Next, the mixture was mixed with a curing agent to form a coating solution, which was poured into a flat-bottomed Petri dish with a stainless steel wire mesh placed on the bottom, followed by a crosslinking reaction at 60° C. for 5 minutes to obtain an electrode for application to the skin.

As a result, the necessary self-adhesion and electrical conductivity could not be obtained.

Comparative Example 2 Based on the formulation shown in Table 2, a main ingredient was obtained in the same manner as in Example 7 except that no crosslinking agent was used.

The base material of Comparative Example 2 was applied to the tin surface of electrode terminal member-1 in the same manner as in Example 7 and heated at 60°C for 5 minutes.
It did not become a gel at room temperature of 20-25°C.

Therefore, no further tests were conducted.

Comparative Example 3 45 g of 2-acrylamido-2-methylpropanesulfonic acid was dissolved in 50 g of water.

Next, while stirring this aqueous solution, 5 g of ethylene glycol diglycidyl ether was added and mixed until the thickness was 11 mm.
The mixture was poured into a flat-bottomed Petri dish and heated at about 65 to 70°C for 2 hours to obtain a sheet-like composition.

Comparative Example 4 Acrylamide tsg Sucrose 25g Methylenebisacrylamide 0.04g Ammonium persulfate 0.02g
Tetramethylethylenediamine 0.03
g water 5
9.91g total
100 g were mixed and polymerized at room temperature for 30 minutes, then poured into a flat-bottomed petri dish and solidified. This was then cut to an appropriate size and subjected to a test.

Table 1 (note) *1: Product name of polyether manufactured by NOF Corporation *2: Additive composition Rhizotium chloride solution: Rhizotium chloride 1% water
99% benzalkonium chloride solution: Benzalkonium chloride 1% ethanol 99% potassium sorbate solution: Potassium sorbate 1% water
99% Nonionic 0P80R solution: Nonionic 0P4OR (manufactured by NOF Corporation, trade name) 10
% isopropyl alcohol 90% Nonion LP20R solution: Nonion LP-2OR (manufactured by NOF Corporation, trade name) 1
0% isopropyl alcohol 90%
*3: Electrode terminal member 1, tin PUT laminate film: tin foil (thickness 20μ) laminated on the adhesive surface of polyester tape #71 (manufactured by Tanemizu Chemical Co., Ltd., trade name).

2. Metallized film: Ester film E7070 (manufactured by Toyobo Co., Ltd., trade name) 3. Wire mesh stainless steel 325 mesh wire mesh Test examples Skin patch obtained in Examples 1 to 12 and Comparative Examples 1.3 and 4 above The following tests were conducted on the electrode.

The results are shown in Table 3.

Capsule clipping (Self-adhesion force) An electrode for skin application with an adhesion area adjusted to 4 aJ was applied to a vertical surface of a human body, and then the total load was set to 100 g for evaluation.

Items that do not peel off: 0 Items that peel off: × <Electrical resistance> As shown in Figure 1, the adhesive area is 4a# (2c+mX2
An electrode 5 for skin application, in which a self-adhesive conductor 3 is fixed to an electrode terminal member 4, is attached to a stainless steel plate 1 whose periphery is covered with an insulating tape 2 so that the electrode terminal member 4 has a diameter of 1 cm).

Then, the lead vA7 connected to the tester 6 is brought into electrical contact with the end of the stainless steel plate 1. Further, the electrical resistance value of the self-adhesive conductor 3 is Ω/4t by bringing the lead wire 8 into contact with a portion of the electrode terminal member 4 on which the self-adhesive conductor 3 is not coated.
n was measured. Measurements were performed at room temperature of 20-25°C.

Table 3 As is clear from the results in Table 3, the skin-applied electrodes of Examples 1 to 6 and 7 to 12 using the self-adhesive conductor for electrodes of the present invention had high self-adhesion strength and Resistance value is also 500Ω
/4d or less, all of which showed excellent results, but the electrode of Comparative Example 1 had the disadvantage of not having any self-adhesive strength and also having a large electrical resistance value.

The electrode of Comparative Example 3 lacked self-adhesion strength. Also, comparative example 4
In addition to lacking self-adhesive strength, the electrodes had high electrical resistance and lacked conductivity.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view showing a method for measuring electrical resistance values in test examples. 1. Stainless steel plate 2: Insulating tape 3; Self-adhesive conductor 4: Electrode terminal member 5: W1 pole 6: Tester representative Patent attorney Seiichi Yanagi Hara 1 Figure 1: Stainless steel 7 anti 2: Zeju Dave 3 ;Self-attached surplus L4 electric, I book 4: tJ ball, pigeon sound P 5: to see 6: tester procedure amendment October 24, 1988 Director General of the Patent Office Yoshi 1) Moon Takeshi 1988 Patent Application No. 105669 2, Name of the invention Self-adhesive conductor for electrodes 3, Person making the amendment Relationship to the case Patent applicant 4, Agent Address: 105 Telephone 436-47007, Contents of the amendment (1) Specification No. Page 8, line 2 r(8)H is corrected as follows. r (8) H Procedural amendment March 6, 1999 Director General of the Japan Patent Office Yoshi 1) Takeshi Moon 1, Indication of the case Patent Application No. 105669 filed in 1988 2, Name of the invention Self-adhesive conductor for electrodes 3 , Relationship with the case of the person making the amendment Patent applicant representative Koshio Okamoto 4, agent 105 telephone 436-47006, subject of amendment Detailed explanation of the invention in the specification column 7, content of amendment

Claims (2)

[Claims] (1) In a self-adhesive conductor for electrodes having conductivity and adhesiveness, an addition product obtained by reacting gelatin and an N-hydroxyimide ester compound in the presence of a fluidity-maintaining agent having conductivity. A self-adhesive conductor for electrodes, characterized by comprising: (2) In a self-adhesive conductor for electrodes having conductivity and adhesiveness, an addition product obtained by reacting gelatin and an N-hydroxyimide ester compound in the presence of a fluidity-preserving agent and a conductive filler. A self-adhesive conductor for electrodes, characterized by comprising: