Fluorescent pastes and films
AssigneeEmpire Technology Development LLC
InventorKazufumi Ogawa
Life of this patent
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Abstract
A fluorescent paste that can form a fluorescent film and can be manufactured without a binder resin and has a high recording density and peel resistance. Fluorescent fine particles each coated with a film formed of a film compound having a reactive group and a curing agent having a plurality of crosslinking reaction groups each reacting with the reactive group to form bonds are blended with a solvent to manufacture fluorescent paste. The fluorescent paste is applied to a substrate coated with a film formed of a second film compound having a second reactive group and is cured by crosslinking reactions between the reactive group and the second reactive group, and the crosslinking reaction groups to form a fluorescent film.
Claims19
A method comprising:
- contacting a plurality of film compounds with a plurality of fluorescent particles such that the plurality of film compounds bind to the plurality of fluorescent particles to form reactive particles, wherein each of the plurality of film compounds has a reactive group and a surface bonding group that is bound to a particle of the plurality of fluorescent particles;
- and
- blending a solvent, the reactive particles, and a crosslinking agent so as to form a fluorescent paste, the crosslinking agent having a plurality of crosslinking reaction groups that crosslink two or more of the reactive particles together upon curing
- wherein the surface bonding group includes a silicon group and each of the reactive groups is selected from the group consisting of an epoxy group, an amino group, and an imino group.
A method comprising:
- contacting a plurality of film compounds with a plurality of fluorescent particles such that each of the plurality of film compounds form a film coated on each of the fluorescent particles, each of the plurality of film compounds having a reactive group and a surface bonding group, the surface bonding group bonding to the plurality of fluorescent particles to form reactive fluorescent particles;
- and
- blending a solvent, the reactive fluorescent particles, and a curing agent having a plurality of crosslinking reaction groups which can react with the reactive groups of the film to bind the plurality of fluorescent particles together, wherein the curing agent is selected from the group consisting of compounds having two or more epoxy groups, compounds having two or more isocyanate groups, and imidazole compounds.
A method of forming a fluorescent paste, the method comprising:
- coating a plurality of fluorescent particles with film compounds to form reactive fluorescent particles with a film coated on each of the plurality of fluorescent particles, wherein each film compound has an epoxy reactive group and a surface bonding group that is bound to one of the plurality of fluorescent particles;
- and
- blending the reactive fluorescent particles with an imidazole curing agent which can react with the epoxy reactive groups of the reactive fluorescent particles to bind the plurality of fluorescent particles together.
Dependencies are inferred from the claim text.