US5401537A
Expired / Lapsed
US
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Aqueous dispersion of intrinsically electroconductive polyalkoxythiophenes, a process for their preparation and their use
Assignee: Hoechst AG
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Filing: 1994-01-14
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Granted: 1995-03-28
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Expires: 2014-01-14
Abstract
Abstract An aqueous dispersion is described which contains electroconductive, doped, polyalkoxythiophene which is soluble in aprotic organic solvents and is insoluble in water. The dispersion has a residual solvent content of less than or equal to 25% by weight, based on the total weight of the dispersion. A process for the preparation of this dispersion and the use of the dispersion for forming coatings on substrates are also described.
Inventors
- 👤 Karl-Heinz Kochem
- 👤 Michael Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:37
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126; C08G2261/00; C08G2261/10; C08G2261/14; C08G2261/141; C08G2261/1412; C08G2261/30; C08G2261/32; C08G2261/322; C08G2261/3223; Y; Y10; Y10T; Y10T428/00; Y10T428/29
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
61 words
A process for making a coated article comprising the steps of applying to a substrate an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion.
Claim 2
Dependent Claim
61 words
A process for making a coated article comprising the steps of applying to a substrate an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion.
Claim 3
Dependent Claim
18 words
A process according to claim 1, wherein said residual organic solvent content is 10 to 20% by weight.
Claim 4
Dependent Claim
13 words
A process according to claim 1, wherein said residual organic solvent is N-methyl-pyrrolidone.
Claim 5
Dependent Claim
19 words
A process according to claim 1, wherein the water content of the dispersion is 95 to 75% by weight.
Claim 6
Dependent Claim
16 words
A process according to claim 4, wherein said water content is 80 to 90% by weight.
Claim 7
Dependent Claim
41 words
A process according to claim 1, wherein said electroconductive polyalkoxythiophene comprises structural units of the formula ##STR2## in which R 1 is a C 1-C 12 -alkoxy group, and the monomer units are bonded to one another in the 2-and/or 5-position.
Claim 8
Dependent Claim
18 words
A process according to claim 6, wherein said R 1 is a C 1 -C 4 -alkoxy group.
Claim 9
Dependent Claim
23 words
A process according to claim 1, wherein the dispersion additionally contains at least one nonconductive binder which is dispersible or soluble in water.
Claim 10
Dependent Claim
13 words
A process according to claim 1, wherein the substrate is a polymeric film.
Claim 11
Dependent Claim
24 words
A process according to claim 1, wherein the film is selected from the group consisting of polyester, polypropylene, polyvinyl chloride, polyethylene, polyamide, and polyacetate.
Claim 12
Dependent Claim
25 words
A process according to claim 1, wherein the dispersion has a solids content of 2 to 15%, based on the total weight of the dispersion.
Claim 13
Dependent Claim
19 words
A process according to claim 1, wherein said substrate is a composite film comprising at least one functional layer.
Claim 14
Dependent Claim
14 words
A process according to claim 12, wherein said functional layer is a metal layer.
Claim 15
Dependent Claim
115 words
A process for making a coated article, comprising a bag with heat-sealed edges, comprising the steps (a) applying to one side of a film an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion, to produce a coated film; (b) laminating the uncoated side of said coated film with a heat-sealable film to produce a coated laminated film; (c) forming a bag by folding; and (d) heat-sealing said bag with the coated side on the outside of the bag.
Claim 16
Dependent Claim
115 words
A process for making a coated article, comprising a bag with heat-sealed edges, comprising the steps (a) applying to one side of a film an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion, to produce a coated film; (b) laminating the uncoated side of said coated film with a heat-sealable film to produce a coated laminated film; (c) forming a bag by folding; and (d) heat-sealing said bag with the coated side on the outside of the bag.
Claim 17
Dependent Claim
125 words
A process for making a coated article comprising a bag with heat-sealed edges, comprising the steps of: (a) applying to a first side of a film, containing a functional layer on the second side, an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion, to produce a coated film; (b) laminating the second side of said coated film with a heat-sealable film to produce a coated laminated film; (c) forming a bag by folding; and (d) heat-sealing said bag with the coated side on the outside of said bag.
Claim 18
Dependent Claim
125 words
A process for making a coated article comprising a bag with heat-sealed edges, comprising the steps of: (a) applying to a first side of a film, containing a functional layer on the second side, an aqueous dispersion comprising electroconductive, polyalkoxythiophene which is soluble in aprotic organic solvents, said dispersion having a residual organic solvent content of from at least about 5% by weight to less than or equal to 25% by weight, based on the total weight of the dispersion, to produce a coated film; (b) laminating the second side of said coated film with a heat-sealable film to produce a coated laminated film; (c) forming a bag by folding; and (d) heat-sealing said bag with the coated side on the outside of said bag.
Claim 19
Dependent Claim
14 words
A process according to claim 15, wherein said functional layer is a metal layer.
Claim 20
Dependent Claim
18 words
A process according to claim 1, wherein the dispersion comprises 5 to 30% by weight of the polyalkoxythiophene.
Claim 21
Dependent Claim
20 words
A process according to claim 1, which further comprises applying a heat-sealable film on the opposite side of the substrate.
Claim 22
Dependent Claim
17 words
A process according to claim 1, wherein both sides of the substrate are coated with said dispersion.
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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) | 1998-03-27 | 1998-09-26 | 1999-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-27 | 2002-09-26 | 2003-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-27 | 2006-09-26 | 2007-03-28 | $7700.00 | Window Closed / Lapsed |