Method for coating an object with a graft polymer layer
First Claim
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1. A method for coating an object with a polymer layer comprising:
- placing the object into a container;
filling the container with a first solution comprising a non-polymeric grafting initiator comprising at least one photoinitiator group capable of generating a free radical active species upon absorption of electromagnetic energy, wherein the photoinitiator group is selected from the group consisting of an initiator that is insoluble in polar solvent and a positively charged initiator;
irradiating the container having the first solution and the object, resulting in the grafting initiator binding to the object;
removing the first solution from the container;
filling the container with a second solution comprising a polymerizable monomer having at least one free-radical polymerizable group; and
irradiating the container having the second solution and the object, wherein the non-polymeric grafting initiator acts as a photoinitiator for a free-radical polymerization reaction, resulting in the polymerization of the polymerizable monomer and formation of a polymer layer on the object.
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Abstract
A method for coating a device, such as an industrially or medically applicable device, with a polymer layer is provided. The method includes contacting the device with a grafting initiator comprising at least one photoinitiator group, exposing the device to radiation, contacting the device with a polymerizable monomer, and again exposing the device to radiation.
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Citations
26 Claims
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1. A method for coating an object with a polymer layer comprising:
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placing the object into a container; filling the container with a first solution comprising a non-polymeric grafting initiator comprising at least one photoinitiator group capable of generating a free radical active species upon absorption of electromagnetic energy, wherein the photoinitiator group is selected from the group consisting of an initiator that is insoluble in polar solvent and a positively charged initiator; irradiating the container having the first solution and the object, resulting in the grafting initiator binding to the object; removing the first solution from the container; filling the container with a second solution comprising a polymerizable monomer having at least one free-radical polymerizable group; and irradiating the container having the second solution and the object, wherein the non-polymeric grafting initiator acts as a photoinitiator for a free-radical polymerization reaction, resulting in the polymerization of the polymerizable monomer and formation of a polymer layer on the object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for coating an object with a polymer layer comprising the steps of:
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establishing fluid communication between a container and a fluid maintenance station, the container having the object disposed therein; dispensing a first solution into the container from the fluid maintenance station, the first solution comprising a non-polymeric grafting initiator comprising at least one photoinitiator group capable of generating a free radical active species upon absorption of electromagnetic energy, wherein the photoinitiator group is selected from the group consisting of an initiator that is insoluble in polar solvent and a positively charged initiator; interrupting fluid communication between the container and the fluid maintenance station; irradiating the container resulting in the grafting initiator binding to the object; re-establishing fluid communication between the container and the fluid maintenance station; removing the first solution from the container and dispensing a second solution into the container from the fluid maintenance station, the second solution comprising a polymerizable monomer having at least one free-radical polymerizable group; and interrupting fluid communication between the container and the fluid maintenance station; and irradiating the container, wherein the non-polymeric grafting initiator acts as a photoinitiator for a free-radical polymerization reaction resulting in the polymerization of the polymerizable monomer and formation of a polymer layer on the object. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for coating an object comprising the steps of:
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placing the object into a translucent container attached to a conveyor mechanism; conveying the translucent container to a fluid maintenance station and filling the translucent container with a first solution comprising a non-polymeric grafting initiator comprising at least one photoinitiator group capable of generating a free radical active species upon absorption of electromagnetic energy, wherein the photoinitiator group is selected from the group consisting of an initiator that is insoluble in polar solvent and a positively charged initiator; conveying the translucent container to an irradiation station and irradiating the container, resulting in the grafting initiator binding to the object; conveying the translucent container to the fluid maintenance station and removing the first solution from the container and filling the container with a second solution comprising a polymerizable monomer having at least one free-radical polymerizable group, said filling sufficient to surround said object with second solution; and conveying the translucent container to the irradiation station and irradiating the translucent container wherein the non-polymeric grafting initiator acts as a photoinitiator for a free-radical polymerization reaction, resulting in the polymerization of the polymerizable monomer and formation of a polymer layer on the object. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26)
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Specification