US5494609A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive coating compositions and method for the preparation thereof
Assignee: Americhem Inc
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Filing: 1994-03-30
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Granted: 1996-02-27
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Expires: 2014-03-30
Abstract
Abstract An electrically conductive coating composition includes an intrinsically conductive polymer dispersed in a film-forming thermoplastic matrix. The coating composition also includes at least one organic solvent capable of dissolving the dispersion. A method according to the invention includes the steps of preparing a dispersion of an intrinsically conductive polymer in a film-forming thermoplastic matrix. The method also includes the steps of dissolving the dispersion in an organic solvent and forming a film from the dissolved dispersion.
Inventors
- 👤 Vaman G. Kulkarni
- 👤 William R. Mathew
- 👤 Lawrence W. Shacklette
- 👤 John C. Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:43
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/128; C; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C09D133/10; C09D133/12; C09D5/00; C09D5/24; C08; C08L; C08L79/00; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
74 words
An electrically conductive coating composition comprising: a dispersion comprising dispersed particle of an intrinsically conductive polymer and, a solution which comprises a hydrophobic film-forming thermoplastic polymer, a highly polar plasticizer, and, an acid anhydride surfactant, in an organic solvent; wherein said thermoplastic polymer is soluble in said solvent to at least 1 percent by weight; and, wherein said dispersion comprises from about 1 to about 50 percent by weight of said intrinsically conductive polymer.
Claim 2
Dependent Claim
74 words
An electrically conductive coating composition comprising: a dispersion comprising dispersed particle of an intrinsically conductive polymer and, a solution which comprises a hydrophobic film-forming thermoplastic polymer, a highly polar plasticizer, and, an acid anhydride surfactant, in an organic solvent; wherein said thermoplastic polymer is soluble in said solvent to at least 1 percent by weight; and, wherein said dispersion comprises from about 1 to about 50 percent by weight of said intrinsically conductive polymer.
Claim 3
Dependent Claim
28 words
A coating composition as set forth in claim 1, wherein said particles of the intrinsically conductive polymers have a particle size equal to or less than 400 nanometers.
Claim 4
Dependent Claim
29 words
A coating composition as set forth in claim 2, wherein said hydrophobic polymer is selected from the group consisting of poly(vinyl chloride), poly(methylmethacrylate), styrenic polymers, copolymers and mixtures thereof.
Claim 5
Dependent Claim
35 words
A coating composition as set forth in claim 1, wherein said thermoplastic polymer is selected from the group consisting of acrylic polymers; polyester; polycarbonates; polyvinyl chloride and copolymers thereof with vinyl acetate; and, styrenic polymers.
Claim 6
Dependent Claim
44 words
A coating composition as set forth in claim 1, wherein the composition further comprises at least one additional film-forming resin; wherein the ratio of said thermoplastic polymer to said at least one additional film-forming resin is from about 1:0.1 to about 1:25 by weight.
Claim 7
Dependent Claim
31 words
A coating composition as set forth in claim 5, wherein said additional film-forming resin is selected from the group consisting of vinyl and acrylic resins, styrenics, polyesters, polyurethanes and mixtures thereof.
Claim 8
Dependent Claim
23 words
A coating composition as set forth in claim 1, further comprising an effective amount of at least one dispersion or film enhancing additive.
Claim 9
Dependent Claim
20 words
A coating composition as set forth in claim 2, wherein said intrinsically conductive polymer is doped substituted or unsubstituted polyaniline.
Claim 10
Dependent Claim
60 words
A coating composition as set forth in claim 2, wherein said organic solvent is selected from the group consisting of toluene, acetone, methyl ethyl ketone, dimethylsulfoxide, N-methyl pyrrolidone, gama-butyrolactone, cyclohexanone, xylene and methyl isobutylketone, and said thermoplastic polymer is selected from the group consisting of acrylic polymers; polyesters; polycarbonates; polyvinyl chloride and copolymers thereof with vinyl acetate; and, styrenic polymers.
Claim 11
Dependent Claim
126 words
An article comprising: a substrate; and, an electrically conductive coating on a surface of said substrate wherein said coating has adhesion to said substrate, said coating comprising from about 99 to about 50 percent by weight of a matrix having a film-forming material comprising a hydrophobic thermoplastic polymer, a highly polar plasticizer and an acid anhydride surfactant; and from about 1 to about 50 percent by weight of a dispersed phase comprising particle of an intrinsically conductive polymer, and said particles having a particle size equal to or less than about 400 nanometers and the loading of said particle and the thickness of the coating is such that said coating is transmissible to at least about 10 percent of the energy of the visible light spectrum.
Claim 12
Dependent Claim
126 words
An article comprising: a substrate; and, an electrically conductive coating on a surface of said substrate wherein said coating has adhesion to said substrate, said coating comprising from about 99 to about 50 percent by weight of a matrix having a film-forming material comprising a hydrophobic thermoplastic polymer, a highly polar plasticizer and an acid anhydride surfactant; and from about 1 to about 50 percent by weight of a dispersed phase comprising particle of an intrinsically conductive polymer, and said particles having a particle size equal to or less than about 400 nanometers and the loading of said particle and the thickness of the coating is such that said coating is transmissible to at least about 10 percent of the energy of the visible light spectrum.
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