Information carrying card comprising a cross-linked polymer composition, and method of making the same
The disclosure provides a cross-linkable polymer composition, a core layer for an information carrying card comprising such cross-linked composition, resulting information carrying card, and methods of making the same. A crosslinkable polymer composition comprises a curable base polymer resin in a liquid or paste form, and a particulate thermoplastic filler. The base polymer resin is selected from the group consisting of urethane acrylate, silicone acrylate, epoxy acrylate, urethane, acrylate, silicone and epoxy. The particulate thermoplastic filler may be polyolefin, polyvinyl chloride (PVC), a copolymer of vinyl chloride and at least another monomer, or a polyester such as polyethylene terephthalate (PET), a compound or blend thereof.
1. A crosslinkable polymer composition comprising:
a curable base polymer in a liquid or paste form, the base polymer comprising urethane acrylate; a particulate thermoplastic filler comprising polyvinyl chloride (PVC) or PVC modified with a copolymer of vinyl chloride and at least another monomer, wherein at least another monomer is selected from the group consisting of vinyl ester, vinyl acetate and vinyl ether;
and a photoinitiator for UV or visible light curing.
2. The crosslinkable polymer composition of claim 1 , further comprising a curative for thermal curing.
3. The crosslinkable polymer composition of claim 1 comprising in the range of from about 0.5 wt. % to about 80 wt. % of the particulate thermoplastic filler.
4. The crosslinkable polymer composition of claim 1 comprising in the range of from about 5 wt. % to about 50 wt. % of the particulate thermoplastic filler.
5. The crosslinkable polymer composition of claim 1 comprising in the range of from about 0.5 wt. % to about 35 wt. % of the particulate thermoplastic filler.
6. The crosslinkable polymer composition of claim 1 comprising in the range of from about 5 wt. % to about 20 wt. % of the particulate thermoplastic filler.
7. The crosslinkable polymer composition of claim 1 wherein the curable base polymer comprises an oligomer or pre-polymer.
8. The crosslinkable polymer composition of claim 1 wherein the particulate thermoplastic filler has a particle size in the range of from 1 nanometer (nm) to 1000 nanometers.
9. The crosslinkable polymer composition of claim 1 wherein the ratio of PVC and the copolymer of vinyl chloride and at least another monomer in the particulate thermoplastic filler is in the range of from 95:5 to 80:20 by weight.
10. The crosslinkable polymer composition of claim 1 wherein the crosslinkable polymer composition is suitable for use for forming a core layer of an information carrying card, and can be dispensed into a cavity defined by a thermoplastic layer.