A free radical curable liquid having a specific weight after curing measured at 25° C. of less than 1.00 g/cm3 including: a) one or more photoinitiators; b) one or more free radical polymerizable monomers or oligomers; and c) hollow particles and/or a free radical crosslinkable polymer selected from
A free radical curable liquid having a specific weight after curing measured at 25° C. of less than 1.00 g/cm3 including: a) one or more photoinitiators; b) one or more free radical polymerizable monomers or oligomers; and c) hollow particles and/or a free radical crosslinkable polymer selected from the group consisting of polyethylene, polypropylene, polybutadiene, polymethylpentene, poly(ethylene-vinylacetate), poly(ethylene-ethyl acrylate) and poly(styrene-butadiene) and copolymers thereof; wherein at least the free radical crosslinkable polymer or at least one of the one or more free radical polymerizable monomers or oligomers includes one or more hydrolyzable groups which upon hydrolyzation form an acid group or salt thereof; and wherein the free radical curable liquid contains no more than 10 wt % of organic solvent.
대표청구항▼
1. A free radical curable liquid comprising: one or more photoinitiators;one or more free radical polymerizable monomers or oligomers; andhollow particles and/or a free radical crosslinkable polymer selected from the group consisting of polyethylene, polypropylene, polybutadiene, polymethylpentene,
1. A free radical curable liquid comprising: one or more photoinitiators;one or more free radical polymerizable monomers or oligomers; andhollow particles and/or a free radical crosslinkable polymer selected from the group consisting of polyethylene, polypropylene, polybutadiene, polymethylpentene, poly(ethylene-vinylacetate), poly(ethylene-ethyl acrylate), and poly(styrene-butadiene) and copolymers thereof; whereinat least the free radical crosslinkable polymer or at least one of the one or more free radical polymerizable monomers or oligomers includes one or more hydrolyzable groups which upon hydrolyzation form an acid group or salt thereof;the free radical curable liquid contains no more than 10 wt % of organic solvent; andthe free radical curable liquid has a specific weight after curing measured at 25° C. of less than 1.00 g/cm3. 2. The free radical curable liquid according to claim 1, wherein the one or more free radical polymerizable monomers or oligomers include at least one free radical polymerizable group selected from the group consisting of an acrylate group, a methacrylate group, an acrylamide group, a methacrylamide group, a styrene group, a maleate group, a fumarate group, an itaconate group, a vinyl ether group, a vinyl ester group, an allyl ether group, and an allyl ester group. 3. The free radical curable liquid according to claim 1, wherein the free radical crosslinkable polymer is a maleinised polybutadiene. 4. The free radical curable liquid according to claim 1, wherein the free radical curable liquid contains no organic solvent. 5. The free radical curable liquid according to claim 1, further comprising a colorant. 6. The free radical curable liquid according to claim 5, wherein the colorant is a white inorganic pigment with a refractive index greater than 1.60. 7. The free radical curable liquid according to claim 1, wherein the hollow particles are made of glass or metal. 8. An inkjet printing method including the steps of: applying a layer of free radical curable liquid as defined by claim 1 to a substrate;at least partially curing the layer of free radical curable liquid;jetting one or more free radical curable inkjet inks on the at least partially cured layer of free radical curable liquid; andcuring the one or more free radical curable inkjet inks. 9. The inkjet printing method according to claim 8, wherein a cured layer assembly of the free radical curable liquid and the one or more free radical curable inkjet inks has a specific weight after curing measured at 25° C. less than 1.00 g/cm3. 10. The inkjet printing method according to claim 9, wherein the one or more free radical curable inkjet inks include a polymeric or polymerizable photoinitiator. 11. The inkjet printing method according to claim 9, wherein the one or more free radical curable inkjet inks do not contain a dye soluble in an aqueous alkaline solution. 12. The inkjet printing method according to claim 9, wherein a density of the substrate is larger than 1.10 g/cm3. 13. The inkjet printing method according to claim 9, wherein the substrate is a paper substrate or a polymeric substrate including a polymer selected from the group consisting of polycarbonate, polyvinyl chloride (PVC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN) and polylactide (PLA), polyimide and copolymers thereof.
Javier Garcia Sainz ES; Carlos Benet Garcia ES; Jose Luis Fenollosa Romero ES; Antonio Manuel Querol Villalba ES; Patricia C. Secrest, Individual inks and an ink set for use in the color ink jet printing of glazed ceramic tiles and surfaces.
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