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US 5,372,924 AGranted
Antistatic plastic moldings
AssigneeAgfa-Gevaert
InventorsDirk Quintens, Wolfgang Fischer, Friedrich Jonas, Holger Ohst, Hans Rehbein, deceased
Life of this patent
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Abstract
Antistatically treated plastic moldings which contain two layers on the surface to be antistatically treated, the layer situated nearer the plastic surface being an antistatic layer and the more remote layer being a protective layer of a radiation-curing coating composition which is cured by exposure to ionizing radiation, are distinguished by excellent antistatic properties and very good surface properties.
Claims7
An antistatic element comprising:
- a plastic support having a surface;
- a first layer on the surface of said plastic support, said first layer being polythiophene made up of units of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another represent hydrogen or a C.sub.1-4 alkyl group or, together form an optionally substituted C.sub.1-4 alkylene radical, preferably an optionally alkyl-substituted methylene radical, an optionally C.sub.1-12 alkyl- or phenyl-substituted 1,2-ethylene radical, a 1,3-propylene radical or a 1,2-cyclohexylene radical and
- An.sup.(-) is a polyanion;
- and
- a second layer, said second layer being a prepolymer which is curable by exposure to ionizing radiation.
2 more elements
An antistatic layered element comprising:
- a plastic coated support;
- a first layer of polythiophene made up of units of the formula ##STR3## in which R.sub.1 and R.sub.2 independently of one another represent hydrogen or a C.sub.1-4 alkyl group or, together form an optionally substituted C.sub.1-4 alkylene radical, preferably an optionally alkyl-substituted methylene radical, an optionally C.sub.1-12 alkyl-or phenyl-substituted 1,2-ethylene radical, a 1,3-propylene radical or a 1,2-cyclohexylene radical,
- An.sup.(-) is a polyanion;
- and
- a second layer, which layer is a prepolymer curable by exposure to ionizing radiation.
2 more elements
Dependencies are inferred from the claim text.