Redispersable latex comprising a polythiophene
AssigneeAgfa-Gevaert
InventorsFrank Louwet, Raf Samijn
Life of this patent
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Abstract
A redispersible or soluble product, optionally having a solids content higher than 10% by weight, obtainable by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene; a printing ink comprising the above product; a coating dispersion or solution comprising the above product; and a method for making an antistatic or electroconductive layer comprising the steps of redispersing or diluting the above product by adding water or an organic solvent so as to obtain a dispersion or solution, optionally adding other ingredients to the coating solution or dispersion and applying the dispersion or solution to an object.
Claims21
A freeze dried, redispersible or soluble product comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene wherein said product is a dried product or a paste.
A method for making an antistatic or electroconductive layer or pattern comprising the steps of:
- redispersing or diluting a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene product by adding water or an organic solvent so as to obtain a solution or dispersion;
- optionally adding other ingredients to the solution or dispersion;
- and
- applying the solution or dispersion to an object.
A method for making an antistatic or electroconductive layer or pattern comprising the steps of:
- redispersing or diluting a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene product by adding water or an organic solvent so as to obtain a printing ink;
- optionally adding other ingredients to the printing ink;
- and
- applying the printing ink to an object.
A method for making an electroconductive layer or pattern comprising the steps of:
- redispersing or diluting a freeze dried, redispersible or soluble product comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene by adding water or an organic solvent so as to obtain a solution or dispersion;
- optionally adding other ingredients to the solution or dispersion;
- and
- applying the solution or dispersion to an object,
- wherein the layer or pattern has a surface resistivity lower than 106 Ω/square.
A method for making an antistatic layer or pattern comprising the steps of:
- redispersing or diluting a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene by adding water or an organic solvent so as to obtain a solution or dispersion;
- optionally adding other ingredients to the solution or dispersion;
- and
- applying the solution or dispersion to an object,
- wherein the layer or pattern has a surface resistivity of at least 106 Ω/square.
A coating solution or dispersion comprising a product comprising a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene.
A process for the use of a coating solution or dispersion comprising a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene comprising the step of preparing an antistatic or electroconductive layer.
A printing ink comprising a product comprising a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene.
A process for the use of a printing ink comprising a redispersible or soluble product obtained by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene comprising the step of printing an antistatic or electroconductive layer.
Dependencies are inferred from the claim text.