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US5421982A
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Electrically conductive polymer gel and the method for manufacturing the same and an organism-use electrode with the use thereof
Assignee: Sekisui Kaseihin Kogyo KK
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Filing: 1993-09-13
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Granted: 1995-06-06
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Expires: 2013-09-13
Abstract
Abstract An electrically conductive polymer gel is composed of a crosslinked polyacrylamide polymer including an electrolytic salt, water and a polyhydric alcohol uniformly dissolved therein, wherein the water and the polyhydric alcohol are major components of said polymer gel. The polyacrylamide series polymer in the gel has properties of being hydrophilic and being a nonelectrolyte. Therefore, a desirable connection between the gel and the electrode can be achieved with low impedance. Moreover, the polyhydric alcohol reduces the drying speed of the electrically conductive polymer gel, thereby preventing an increase in the impedance due to the dryout of the gel. Therefore, the electrically conductive polymer gel of the present invention permits an accurate measurement of an electrical phenomenon in an organism for long periods of time.
Inventors
- 👤 Toshiki Ikeda
- 👤 Yoshikazu Kobayashi
- 👤 Shuichi Sasahara
- 👤 Takashi Higashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:21
CPC Classifications
C; C08; C08L; C08L77/00; H; H01; H01G; H01G9/00; H01G9/004; H01G9/022; C08F; C08F220/00; C08F220/02; C08F220/52; C08F220/54; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/122; H01M; H01M6/00; H01M6/14; H01M6/18; H01M6/181; Y; Y10; Y10S; Y10S435/00; Y10S435/817
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
60 words
An electrically conductive polymer gel comprising: a crosslinked polyacrylamide polymer, a mixture of a polyhydric alcohol penetrant and 20 to 65 weight percent, based on the weight of the entire gel, of water, and an electrolytic salt uniformly dissolved in said mixture; wherein said mixture of water and said polyhydric alcohol penetrant is the major component of said polymer gel.
Claim 2
Dependent Claim
60 words
An electrically conductive polymer gel comprising: a crosslinked polyacrylamide polymer, a mixture of a polyhydric alcohol penetrant and 20 to 65 weight percent, based on the weight of the entire gel, of water, and an electrolytic salt uniformly dissolved in said mixture; wherein said mixture of water and said polyhydric alcohol penetrant is the major component of said polymer gel.
Claim 3
Dependent Claim
41 words
The electrically conductive polymer gel as set forth in claim 1, consisting essentially of 13-25 weight % of said polyacrylamide polymer; 20-65 weight % of water; 20-65 weight % of said polyhydric alcohol; and 2-15 weight % of said electrolytic salt.
Claim 4
Dependent Claim
21 words
An integral unit comprising an electrically conductive polymer gel composition as set forth in claim 1 adhered to an electrode element.
Claim 5
Dependent Claim
15 words
A sensor element comprising an electrically conductive polymer gel as set forth in claim 1.
Claim 6
Dependent Claim
16 words
A solid electrolyte solution comprising an electrically conductive polymer gel as set forth in claim 1.
Claim 7
Dependent Claim
90 words
An adhesive electrically conductive polymer gel composition comprising: a polyacrylamide polymer crosslinked by at least an epoxy crosslinker, a mixture of water and a penetrant, and an electrolytic salt uniformly dissolved in said mixture, wherein said water comprises 20 to 65 weight percent of said gel; wherein said mixture of water and said penetrant is the major component of said polymer gel; and wherein said epoxy cross linking causes said gel to have improved adhesion as compared to the same composition in which the acrylamide polymer is otherwise cross linked.
Claim 8
Dependent Claim
90 words
An adhesive electrically conductive polymer gel composition comprising: a polyacrylamide polymer crosslinked by at least an epoxy crosslinker, a mixture of water and a penetrant, and an electrolytic salt uniformly dissolved in said mixture, wherein said water comprises 20 to 65 weight percent of said gel; wherein said mixture of water and said penetrant is the major component of said polymer gel; and wherein said epoxy cross linking causes said gel to have improved adhesion as compared to the same composition in which the acrylamide polymer is otherwise cross linked.
Claim 9
Dependent Claim
24 words
The electrically conductive polymer gel composition as set forth in claim 6, wherein said epoxy crosslinker is about 0.05-0.3 weight % of said composition.
Claim 10
Dependent Claim
28 words
The electrically conductive polymer gel as set forth in claim 1 or 6 further including a metallic ion sealing compound which has a vapor pressure at room temperature.
Claim 11
Dependent Claim
26 words
The electrically conductive polymer gel as composition set forth in claim 8, wherein said metallic ion sealing compound is about 0.05 weight % of said composition.
Claim 12
Dependent Claim
21 words
An integral unit comprising an electrically conductive polymer gel composition as set forth in claim 8, adhered to an electrode element.
Claim 13
Dependent Claim
15 words
A sensor element comprising an electrically conductive polymer gel as set forth in claim 8.
Claim 14
Dependent Claim
16 words
A solid electrolyte solution comprising an electrically conductive polymer gel as set forth in claim 8.
Claim 15
Dependent Claim
20 words
An integral unit comprising an electrically conductive polymer gel as set forth in claim 6 adhered to an electrode element.
Claim 16
Dependent Claim
17 words
A sensor element comprising an electrically conductive epoxy cross linked polymer gel as claimed in claim 6.
Claim 17
Dependent Claim
18 words
A solid electrolyte solution comprising an epoxy cross linked electrically conductive polymer gel as claimed in claim 6.
Claim 18
Independent Claim
58 words
A method for manufacturing an electrically conductive polymer gel composition comprising: polymerizing and crosslinking a monomer blending solution comprising: 20 to 65 weight percent water, a polyhydric alcohol, an acrylamide polymerizable monomer, a crosslinkable monomer, and an electrolytic salt, wherein the combination of said water and said polyhydric alcohol is the major component of said polymer gel composition.
Claim 19
Independent Claim
58 words
A method for manufacturing an electrically conductive polymer gel composition comprising: polymerizing and crosslinking a monomer blending solution comprising: 20 to 65 weight percent water, a polyhydric alcohol, an acrylamide polymerizable monomer, a crosslinkable monomer, and an electrolytic salt, wherein the combination of said water and said polyhydric alcohol is the major component of said polymer gel composition.
Claim 20
Dependent Claim
31 words
The method for manufacturing an electrically conductive polymer gel composition as set forth in claim 16 including polymerizing and crosslinking the monomer blending composition at a temperature range of 50°-90° C.
Claim 21
Dependent Claim
33 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 16, including polymerizing and crosslinking the monomer blending solution for 1-2 hours at a temperature range of 40°-90° C.
Claim 22
Dependent Claim
40 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 16 including polymerizing and crosslinking the monomer blending composition disposed between a pair of thermal plates positioned to heat said monomer blending composition from both surfaces.
Claim 23
Dependent Claim
39 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 16 including polymerizing and crosslinking the monomer blending composition having a net reinforcing material submersed in or on a surface of the monomer blending composition.
Claim 24
Dependent Claim
53 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 16, wherein the components of said gel composition comprise: said acrylamide polymer, 13-25 weight %; said crosslinkable monomer, 0.001-0.3 weight %; said water, 20-65 weight %; said polyhydric alcohol, 20-65 weight %; and said electrolytic salt, 2-15 weight %.
Claim 25
Independent Claim
42 words
A method for manufacturing an electrically conductive polymer gel composition comprising polymerizing and crosslinking a monomer blending composition comprising: an acrylamide polymerizable monomer, a crosslinkable monomer, 20 to 65 weight percent water, a penetrant, an electrolytic neutral salt, and an epoxy crosslinker.
Claim 26
Independent Claim
42 words
A method for manufacturing an electrically conductive polymer gel composition comprising polymerizing and crosslinking a monomer blending composition comprising: an acrylamide polymerizable monomer, a crosslinkable monomer, 20 to 65 weight percent water, a penetrant, an electrolytic neutral salt, and an epoxy crosslinker.
Claim 27
Dependent Claim
35 words
The method for manufacturing an electrically conductive polymer gel as set forth in claim 16 or 22, wherein: said monomer blending solution includes metallic ion sealing compound which has a vapor pressure at room temperature.
Claim 28
Dependent Claim
31 words
The method for manufacturing an electrically conductive polymer gel composition as set forth in claim 22 including polymerizing and crosslinking the monomer blending composition at a temperature range of 50°-90° C.
Claim 29
Dependent Claim
87 words
An organism-use electrode system comprising: an organism having in electrical contact therewith; an electrically conductive polymer gel comprising: a crosslinked polyacrylamide polymer; a mixture of a polyhydric alcohol penetrant and 20 to 65 weight percent, based on the total weight of the gel, of water; and an electrolyte salt uniformly dissolved in said mixture, wherein said mixture of water and said polyhydric alcohol is the major component of said polymer gel; and an electrode element in electrical contact with said gel and through said gel said organism.
Claim 30
Dependent Claim
87 words
An organism-use electrode system comprising: an organism having in electrical contact therewith; an electrically conductive polymer gel comprising: a crosslinked polyacrylamide polymer; a mixture of a polyhydric alcohol penetrant and 20 to 65 weight percent, based on the total weight of the gel, of water; and an electrolyte salt uniformly dissolved in said mixture, wherein said mixture of water and said polyhydric alcohol is the major component of said polymer gel; and an electrode element in electrical contact with said gel and through said gel said organism.
Claim 31
Dependent Claim
93 words
An organism-use electrode system comprising: an organism having adhered thereto in electrical contact therewith; an electrically conductive polymer gel comprising: a polyacrylamide polymer crosslinked by at least an epoxy crosslinker, a mixture of a penetrant and 20 to 65 weight percent, based on the total weight of the gel, of water, and an electrolytic salt uniformly dissolved in said mixture, wherein the mixture of said water and said penetrant is the major component of said polymer gel; and an electrode element in electrical contact with said gel and through said gel said organism.
Claim 32
Dependent Claim
93 words
An organism-use electrode system comprising: an organism having adhered thereto in electrical contact therewith; an electrically conductive polymer gel comprising: a polyacrylamide polymer crosslinked by at least an epoxy crosslinker, a mixture of a penetrant and 20 to 65 weight percent, based on the total weight of the gel, of water, and an electrolytic salt uniformly dissolved in said mixture, wherein the mixture of said water and said penetrant is the major component of said polymer gel; and an electrode element in electrical contact with said gel and through said gel said organism.
Claim 33
Dependent Claim
31 words
The organism-use electrode element as set forth in claim 25 or 26, wherein: said electrically conductive polymer gel further includes a metal ion sealing compound having vapor pressure at room temperature.
Claim 34
Dependent Claim
38 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 22 including polymerizing and crosslinking the monomer blending composition disposed between a pair of thermal plates positioned to heat said solution from both surfaces.
Claim 35
Dependent Claim
39 words
The method for manufacturing electrically conductive polymer gel composition as set forth in claim 22 including polymerizing and crosslinking the monomer blending composition having a net reinforcing material submerged in or on a surface of the monomer blending composition.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-06-05 | 1998-12-05 | 1999-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-05 | 2002-12-05 | 2003-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-05 | 2006-12-05 | 2007-06-06 | $7700.00 | Window Closed / Lapsed |