Radiation-curable metal particles and curable resin compositions comprising these particles
First Claim
1. A radiation-curable metal particle comprising a (meth)acrylic compound linked by a silyl group to a metal.
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Accused Products
Abstract
Provided is a liquid curable resin composition which can produce transparent cured products with a high refractive index, high hardness, and superior abrasion resistance, and which can be suitably used as a coating material. The liquid curable resin composition comprises: (A) a poly-functional (meth)acrylic compound having at least three (meth) acryloyl groups in the molecule; (B) a reaction product obtained by the reaction of a compound having a polymerizable unsaturated group and alkoxysilyl group in the molecule and particles metal oxide, the metals being preferably selected from the group consisting of zirconium, antimony, zinc, tin, cerium, and titanium; and (C) a radiation polymerization initiator.
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Citations
15 Claims
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1. A radiation-curable metal particle comprising a (meth)acrylic compound linked by a silyl group to a metal.
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2. The particle according to claim 1, wherein said metal is selected from the group consisting of zirconium, titanium, antimony, zinc, tin, indium, cerium and aluminium.
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3. The particle according to claim 1, wherein the silyl group is a substituted silyl group which comprises an alkoxy group, a urethane group and/or a thiourethane group.
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4. The particle according to claim 1, wherein said particle is obtainable by reacting an organosilicon compound with a metal oxide.
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5. The particle according to claim 1, wherein the particle has a diameter of from 0.001 to 2 μ
- m.
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6. A method for forming a radiation-curable metal particle according to claim 1, comprising reacting a metal oxide with an organosilicon compound.
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7. The method according to claim 6, wherein the metal oxide is reacted with the organosilicon compound in the presence of an acid or a base.
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8. A radiation-curable composition comprising:
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(A) a (meth)acrylic compound;
(B) radiation-curable metal particles comprising a radiation-curable group linked by a silyl group to a metal; and
(C) a radiation polymerization photoinitiator.
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9. The composition according to claim 8, wherein said (meth)acrylic compound comprises at least three (meth)acryloyl groups.
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10. The composition according to claim 8, wherein an about 5 μ
- m thick layer of the composition, after cure, has a light transmittance of at least 90% and a haze value after the Taber'"'"'s abrasion test of less than 40%.
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11. A product formed from curing the composition according to claim 8, wherein said product has a refractive index of at least 1.55 and a light transmittance of at least 95%.
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12. The product according to claim 11, wherein said products is a coating.
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13. An anti-reflection article comprising the product according to claim 11.
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14. The metal particle of claim 1, wherein said metal is absent silicon metal.
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15. The metal particle of claim 8, wherein said metal is absent silicon metal.
Specification