Energy-curable coating compositions
First Claim
1. An energy-curable coating composition comprising a water-soluble or water-dispersible binder capable of being polymerised by exposure to a source of radiation, a particulate electrically conductive material, and water as a non-reactive diluent, and, optionally, a photoinitiator, the composition, when cured, having a resistivity no greater than 1 ohm/square, as measured by ASTM F1896-98.
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Accused Products
Abstract
An energy-curable coating composition comprises a water-soluble or water-dispersible binder capable of being poly-merised by exposure to a source of radiation, a particulate electrically conductive material, and water as a non-reactive diluent, and, if necessary, a photoinitiator, the composition, when cured, having a resistivity no greater than 1 ohm/square, as measured by ASTM F1896-98. The cured product can be used as a conductive coating or ink for use in such applications as RFID tags.
37 Citations
28 Claims
- 1. An energy-curable coating composition comprising a water-soluble or water-dispersible binder capable of being polymerised by exposure to a source of radiation, a particulate electrically conductive material, and water as a non-reactive diluent, and, optionally, a photoinitiator, the composition, when cured, having a resistivity no greater than 1 ohm/square, as measured by ASTM F1896-98.
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24. A composition comprising:
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(a) from 2 to 15% by weight of a water-soluble or water-dispersible oligomer or prepolymer capable of being polymerised by radiation, (b) from 2 to 10%, more preferably from 2 to 9%, by weight of a water-soluble monomer capable of being polymerised by radiation, (c) from 1 to 8% by weight of a water-insoluble monomer capable of being polymerised by radiation, (d) sufficient of a particulate electrically conductive material that the ratio of said electrically conductive material to components (a), (b) and (c) is at least 2;
1(e) from 1 to 60% by weight of water as a non reactive diluent, and (f) optionally from 0.5 to 10% by weight of a photoinitiator, the composition, when cured, having a resistivity no greater than 1 ohm/square, as measured by ASTM F1896-98.
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28. A process according to claim 27, in which said radiation is ultraviolet or electron beam.
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28-1. A composition comprising:
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(a) from 4 to 14% by weight of a water-soluble or water-dispersible oligomer or prepolymer capable of being polymerised by radiation, (b) from 2 to 9%, by weight of a water-soluble monomer capable of being polymerised by radiation, (c) from 3 to 7% by weight of a water-insoluble monomer capable of being polymerised by radiation, (d) sufficient of a particulate electrically conductive material that the ratio of said electrically conductive material to components (a), (b) and (c) is at least 3;
1(e) from 1 to 40% by weight of water as a non reactive diluent, and (f) from 1 to 5% by weight of a photoinitiator, the composition, when cured, having a resistivity no greater than 10−
2 ohm/square, as measured by ASTM F1896-98.
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Specification