Compositions useful for the formation of an antistatic layer or an electromagnetic radiation shield
AssigneeHeraeus Deutschland GmbH & Co. KG
InventorUdo GUNTERMANN
Life of this patent
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Abstract
A liquid composition. The liquid composition comprises (i) particles comprising a complex of a polythiophene and a polyanion, (ii) at least one tetraalkyl orthosilicate, (iii) at least one solvent, and (iv) gallic acid, at least one derivative of gallic acid or a mixture thereof. Also provided are a process for the preparation of a liquid composition, a liquid composition obtainable by such a process, a process for the preparation of a layered body, the layered body obtainable by such a process, a layered body and the use of a liquid composition.
Claims20
A liquid composition comprising
- i) particles comprising a complex of a polythiophene and a polyanion,
- ii) at least one tetraalkyl orthosilicate,
- iii) at least one solvent, and
- iv) gallic acid, at least one derivative of gallic acid or a mixture thereof.
A layered body, comprising:
- a) a substrate;
- and
- b) an electrically conductive layer coated onto the substrate;
- wherein the electrically conductive layer comprises
- i) particles comprising a complex of a polythiophene and a polyanion,
- ii) at least one tetraalkyl orthosilicate, and
- iii) gallic acid, at least one derivative of gallic acid or a mixture thereof.
A liquid composition comprising:
- i) particles comprising a complex of poly(3,4-ethylenedioxythiophene) and an anion of polystyrene sulfonic acid (PEDOT/PSS),
- ii) at least one tetraalkyl orthosilicate selected from the group consisting of tetramethyl orthosilicate, tetraethyl orthosilicate, tetrapropyl orthosilicate, tetrabutyl orthosilicate, tetrapentyl orthosilicate, an at least partially hydrolysed product of one of these orthosiliscates and a mixture of at least two of these orthosiliscates,
- iii) at least one solvent comprising water or a mixture of water and an alcohol selected from the group consisting of methanol, ethanol, n-propanol and isopropanol, and
- iv) gallic acid, at least one derivative of gallic acid or a mixture thereof, wherein the at least one derivative of gallic acid is selected from the group consisting of esters of gallic acid and a sugar and alkyl esters, alkenyl esters, cycloalkyl esters, cycloalkenyl esters and aryl esters of gallic acid.
Dependencies are inferred from the claim text.