US5208301A
Expired / Lapsed
US
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Sulfonated polyaniline compositions, ammonium salts thereof, process for their preparation and uses thereof
Assignee: Ohio State University Research Foundation
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Filing: 1990-05-25
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Granted: 1993-05-04
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Expires: 2010-05-25
Abstract
Abstract Sulfonic acid-substituted polyaniline compositions, ammonium salts thereof, and uses therefor are disclosed. The ammonium salts of the sulfonic acid-substituted polyaniline compositions are used as interim materials in the processing of conducting sulfonated polyaniline compositions. The ammonium salts of the sulfonic acid-substituted polyaniline compositions are also used to either reversible or irreversible NH3 filters, sensors, temperature indicators and the like.
Inventors
- 👤 Arthur J. Epstein
- 👤 Jiang Yue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:31
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/60; C; C08; C08G; C08G73/00; C08G73/02; C08G73/026; C08G73/0266; D; D01; D01F; D01F6/00; D01F6/58; D01F6/76; D06; D06M; D06M10/00; D06M10/04; D06M10/08; D06M10/10; D06M15/00; D06M15/19; D06M15/37; D06M15/61; G; G02; G02F; G02F1/00; G02F1/01; G02F1/0126; G02F1/35; G02F1/355; G02F1/361; G02F1/3611; G11; G11B; G11B7/00; G11B7/24; G11B7/241; G11B7/242; G11B7/244; G11B7/245; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
271 words
A method for making a self-protonated, conducting sulfonated polyaniline composition of formula I: ##STR8## wherein 0≦y≦1, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of H, --SO 3 M, --R 7 SO 3 M, --OCH 3 , --CH 3 , --C 2 H 5 , --F, --Cl, --Br, --I, --(NR 7 ) 2 , --NHCOR 7 , --OH, --O - , --SR 7 , --OR 7 , --OCOR 7 , --NO 2 , --COOH, --COOR 7 , --COR 7 , --CHO and --CH, wherein R 7 is a C 1 -C 8 alkyl, aryl or aralkyl group, wherein the fraction of rings containing at least one R 1 , R 2 , R 3 or R 4 group being an --SO 3 M, or --R 7 SO 3 M wherein M is an unsubstituted or substituted ammonia of the formula NA 1 A 2 A 3 and A 1 , A 2 and A 3 are independently selected from the group consisting of H, and C 1 -C 8 straight or branched alkyl, varies from approximately 20 percent to 100 percent; comprising: (a) dissolving a sulfonated polyaniline composition in an unsubstituted or substituted ammonium hydroxide to form a solution comprising an unsubstituted or substituted ammonium salt of the sulfonated polyaniline composition; (b) exposing a substrate to the solution comprising the ammonium salt of the sulfonated polyaniline composition; and, (c) converting the ammonium salt of the sulfonated polyaniline composition to the self-protonated conducting sulfonated polyaniline composition by removing water and the unsubstituted or substituted ammonia gas.
Claim 2
Independent Claim
271 words
A method for making a self-protonated, conducting sulfonated polyaniline composition of formula I: ##STR8## wherein 0≦y≦1, R 1 , R 2 , R 3 , R 4 , R 5 and R 6 are independently selected from the group consisting of H, --SO 3 M, --R 7 SO 3 M, --OCH 3 , --CH 3 , --C 2 H 5 , --F, --Cl, --Br, --I, --(NR 7 ) 2 , --NHCOR 7 , --OH, --O - , --SR 7 , --OR 7 , --OCOR 7 , --NO 2 , --COOH, --COOR 7 , --COR 7 , --CHO and --CH, wherein R 7 is a C 1 -C 8 alkyl, aryl or aralkyl group, wherein the fraction of rings containing at least one R 1 , R 2 , R 3 or R 4 group being an --SO 3 M, or --R 7 SO 3 M wherein M is an unsubstituted or substituted ammonia of the formula NA 1 A 2 A 3 and A 1 , A 2 and A 3 are independently selected from the group consisting of H, and C 1 -C 8 straight or branched alkyl, varies from approximately 20 percent to 100 percent; comprising: (a) dissolving a sulfonated polyaniline composition in an unsubstituted or substituted ammonium hydroxide to form a solution comprising an unsubstituted or substituted ammonium salt of the sulfonated polyaniline composition; (b) exposing a substrate to the solution comprising the ammonium salt of the sulfonated polyaniline composition; and, (c) converting the ammonium salt of the sulfonated polyaniline composition to the self-protonated conducting sulfonated polyaniline composition by removing water and the unsubstituted or substituted ammonia gas.
Claim 3
Dependent Claim
33 words
The method of claim 1 in which the removal of water and the unsubstituted or substituted ammonia is conducted at a temperature in the range of about 20° C. to about 50° C.
Claim 4
Dependent Claim
23 words
The method of claim 1 in which the removal of water and the unsubstituted or substituted ammonia is conducted at about room temperature.
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