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US5079334A
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Electromagnetic radiation absorbers and modulators comprising polyaniline
Assignee: OHIO STATE UNIVERSITY RESEARCH FOUNDATION A INSTITUTE OF OH
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Filing: 1988-05-13
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Granted: 1992-01-07
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Expires: 2008-05-13
Abstract
Abstract A composition for absorbing electromagnetic radiation, wherein said electromagnetic radiation possesses a wavelength generally in the range of from about 1000 Angstroms to about 50 meters, wherein said composition comprises a polyaniline composition of the formula ##STR1## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group containing of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, NR 3 2 , --NHCOR 3 , --OH, --O - , SR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Inventors
- 👤 Arthur J. Epstein
- 👤 John M. Ginder
- 👤 Mitchell G. Roe
- 👤 Hamid Hajiseyedjavadi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:12
CPC Classifications
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; G02F1/35; G02F1/355; G02F1/361; G02F1/3611; H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
84 words
A method of heating a substrate, said method comprising the steps of: (a) applying to a substrate an electromagnetic radiation-absorbing polyaniline composition, or a partially protonated salt thereof; (b) exposing the electromagnetic radiation-absorbing polyaniline composition, or the partially protonated salt thereof, to electromagnetic radiation, whereby the electromagnetic radiation-absorbing polyaniline composition, or the partially protonated salt thereof absorbs the electromagnetic radiation, whereby the absorption of the electromagnetic radiation generates heat and said heat is transferred from the polyaniline composition or the salt to the substrate.
Claim 2
Independent Claim
84 words
A method of heating a substrate, said method comprising the steps of: (a) applying to a substrate an electromagnetic radiation-absorbing polyaniline composition, or a partially protonated salt thereof; (b) exposing the electromagnetic radiation-absorbing polyaniline composition, or the partially protonated salt thereof, to electromagnetic radiation, whereby the electromagnetic radiation-absorbing polyaniline composition, or the partially protonated salt thereof absorbs the electromagnetic radiation, whereby the absorption of the electromagnetic radiation generates heat and said heat is transferred from the polyaniline composition or the salt to the substrate.
Claim 3
Dependent Claim
14 words
A method as claimed in claim 1 wherein the electromagnetic radiation is microwave radiation.
Claim 4
Independent Claim
13 words
A method as claimed in claim wherein the electromagnetic radiation is infrared radiation.
Claim 5
Dependent Claim
14 words
A method as claimed in claim 1 wherein the electromagnetic radiation is visible radiation.
Claim 6
Dependent Claim
14 words
A method as claimed in claim 1 wherein the electromagnetic radiation is ultraviolet radiation.
Claim 7
Dependent Claim
102 words
A method as claimed in claim 1 wherein the electromagnetic radiation-absorbing polyaniline composition is of the general formula ##STR8## where y can be equal to or greater than zero, and R 1 and R 2 are independently selected from the group consisting of H, --OCH 3 , --CH 3 , --F, --Cl, --Br, --I, --NR 3 2 , --NHCOR 3 , --OH, --O - , --SR 3 , --OR 3 , --OCOR 3 , --NO 2 , --COOH, --COOR 3 , --COR 3 , --CHO, and --CN, where R 3 is a C 1 to C 8 alkyl, aryl or aralkyl group.
Claim 8
Dependent Claim
32 words
A method as claimed in claim 1 wherein the electromagnetic radiation-absorbing polyaniline composition is of molecular weight in the range of from approximately 300 (oligomers of polyaniline) to in excess of 100,000.
Claim 9
Dependent Claim
41 words
A method as claimed in claim 1 wherein the electromagnetic radiation-absorbing polyaniline composition is applied to the substrate by a method selected from the group consisting of spray coating, dip coating, spin casting, melt extrusion, transfer roll coating, and brush-on coating.
Claim 10
Dependent Claim
40 words
A method as claimed in claim 1 wherein the substrate is a material selected from the group consisting of synthetic fibrous material, natural fibrous material, inorganic filler material, organic polymeric material, woven fabric material, non-woven fabric material, and silicate-containing material.
References Cited (Backward Citations)
US4728796A
Cited
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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) | 1995-01-06 | 1995-07-08 | 1996-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-06 | 1999-07-08 | 2000-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-06 | 2003-07-08 | 2004-01-07 | $7700.00 | Window Closed / Lapsed |