Patent EP0440957B1 successfully refreshed from Google Patents.
EP0440957B1
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New polythiophene dispersions, their preparation and their use
Assignee: Bayer AG
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Filing: 1990-12-20
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Granted: 1996-03-27
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Expires: 2010-12-20
Abstract
No abstract record available.
Inventors
- 👤 Friedrich Dr. Jonas
- 👤 Werner Dr. Krafft
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-26 13:23
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/06; H01B1/12; H01B1/124; H01B1/127; C; C08; C08G; C08G61/00; C08G61/12; C08G61/122; C08G61/123; C08G61/126; G; G03; G03C; G03C1/00; G03C1/76; G03C1/85; G03C1/89; H01G; H01G11/00; H01G11/22; H01G11/30; H01G11/48; H01G11/54; H01G11/56; H01G9/00; H01G9/004; H01G9/022; H01G9/025; H01G9/028; H10; H10K; H10K85/00; H10K85/10; H10K85/111; H10K85/113; H10K85/1135; Y; Y02; Y02E; Y02E60/00; Y02E60/13
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
33 words
Dispersions of polythiophenes synthesized from structural units corresponding to the following formula: in which R₁ and R₂ together form an optionally substituted C₁₋₄ alkylene group, in the presence of polyanions of polystyrenesulfonic acid.
Claim 2
Dependent Claim
37 words
Polythiophene dispersions as claimed in claim 1, characterized in that, in formula (I), R₁ and R₂ together represent an optionally alkyl-substituted methylene group, an optionally C₁₋₁₂-alkyl- or phenyl-substituted 1,2-ethylene group, a 1,3-propylene group or a 1,2-cyclohexylene group.
Claim 3
Dependent Claim
65 words
A process for the production of the polythiophene dispersions claimed in claim 1, characterized in that compounds corresponding to the following formula: in which R₁ and R₂ are as defined in claim 1, are oxidatively polymerized with oxidizing agents typically used for the oxidative polymerization of pyrrole and/or with oxygen or air in the presence of the polystyrenesulfonic acid at temperatures of 0 to 100°C.
Claim 4
Dependent Claim
21 words
A process for the antistatic treatment of plastic mouldings, characterized in that the polythiophene dispersions claimed in claim 1 are used.
Claim 5
Dependent Claim
20 words
A process for the antistatic treatment of plastic mouldings, characterized in that agueous preparations of the polythiophene dispersions are used.
Claim 6
Dependent Claim
24 words
A process for the antistatic treatment of photographic materials, characterized in that a layer containing the polythiophene dispersions claimed in claim 1 is applied.
Claim 7
Dependent Claim
23 words
A process as claimed in claim 6, characterized in that the polythiophene dispersions are applied in a quantity of 0.001 to 0.3 g/m².
Claim 8
Dependent Claim
23 words
A photographic material with an antistatic layer, characterized in that the layer contains at least one polythiophene polyacid preparation according to claim 1.
References Cited (Backward Citations)
EP0229992A2
Cited
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