Laminate having inorganic nanoparticle-containing surface layer that exhibits appearance with low gloss and inorganic nanoparticle-containing radiation-curable ink

Patent metadata

Field	Value
Publication number	US-12428568-B2
Application number	US-202017754876-A
Country	US
Kind code	B2
Filing date	Nov 17, 2020
Priority date	Nov 20, 2019
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

[Object] To provide a laminate having inorganic nanoparticle-containing surface layer that exhibits a low gloss appearance and inorganic nanoparticle-containing radiation-curable ink. [Resolution Means] A laminate of an embodiment of the present disclosure has a substrate and a surface layer containing a cured product of a radiation-curable ink, the radiation-curable ink containing inorganic nanoparticles, a polyether-modified polymer, and at least one selected from the group consisting of a radiation-curable polymerizable oligomer and a radiation-curable polymerizable monomer, and the surface layer having a 60° surface glossiness of 50.0 GU or less.

First claim

What is claimed is:

1. A laminate comprising:
a substrate, and
a surface layer having a 60° surface glossiness of 50.0 GU or less, the surface layer comprising a cured product of a radiation-curable ink, the radiation-curable ink comprising silica nanoparticles,
a polyether-modified polymer,
a radiation-curable bifunctional polymerizable oligomer, and
a compound of Formula (I)
R 1 -R 2 —Si(OR 3 ) 3   Formula (1)

wherein
R 1 is an acryloyl group or a methacryloyl group,
R 2 is an alkylene group having from 5 to 12 carbon atoms, and
R 3 is an alkyl group having from 1 to 4 carbon atoms,

wherein the surface layer comprises aggregated or gathered silica nanoparticles.

2. The laminate according to claim 1 , wherein the radiation-curable ink further comprises a radiation curable monofunctional polymerizable monomer.

3. The laminate according to claim 1 , wherein the compound represented by Formula (1) is 8-(meth)acryloxyoctyltrimethoxysilane.

4. The laminate according to claim 1 , wherein the radiation-curable ink further contains an optional non-functional silane coupling agent.

5. The laminate according to claim 1 , wherein the radiation-curable bifunctional polymerizable oligomer is a bifunctional urethane (meth)acylate oligomer.

6. The laminate according to claim 4 , wherein a compounded amount of each of the compound represented by Formula (1) and the optional non-functional silane coupling agent is in a range from 0.030 to 0.090 mmol per 1 g of the silica nanoparticles.

7. The laminate according to claim 1 , wherein the silica nanoparticles are contained in a proportion from 2 to 20 mass % relative to a total weight of the surface layer.

8. The laminate according to claim 1 , wherein an average particle size of the silica nanoparticles is 5 nm or greater and 150 nm or less.

9. The laminate according to claim 1 , wherein the laminate is used for decoration.

10. A radiation-curable ink comprising
silica nanoparticles,
a polyether-modified polymer,
a radiation-curable bifunctional polymerizable oligomer, and
a compound of Formula (I)
R 1 -R 2 —Si(OR 3 ) 3   Formula (1)

wherein
R 1 is an acryloyl group or a methacryloyl group,
R 2 is an alkylene group having from 5 to 12 carbon atoms, and
R 3 is an alkyl group having from 1 to 4 carbon atoms,

wherein the silica nanoparticles form aggregation or gathering after curing.

11. The radiation-curable ink according to claim 10 , wherein the ink further comprises a radiation curable monofunctional polymerizable monomer.

12. The radiation-curable ink according to claim 10 , wherein the compound represented by Formula (1) is 8-(meth)acryloxyoctyltrimethoxysilane.

13. The radiation-curable ink according to claim 10 , further comprising an optional non-functional silane coupling agent.

14. The radiation-curable ink according to claim 10 , wherein the radiation-curable bifunctional polymerizable oligomer is a bifunctional urethane (meth)acrylate oligomer.

15. The ink according to claim 13 , wherein a compounded amount of each of the compound represented by Formula (1) and the optional non-functional silane coupling agent is in a range of from 0.030 to 0.090 mmol per 1 g of the silica nanoparticles.

16. The ink according to claim 10 , wherein a content of a solvent is 5 mass % or less.

Assignees

• 3M Innovative Properties Company

Inventors

• Sugiyama Naota
• Ono Katsuya
• Pokorny Richard J
• Ihara Taiki
• Hayashi Hiroki
• Mackey Sonja S
• Hatanaka Hideyuki

Classifications

• C09D11/102

  containing macromolecular compounds obtained by reactions other than those only involving unsaturated carbon-to-carbon bonds · CPC title

• C09D11/322

  Pigment inks · CPC title

• C09D11/38

  characterised by non-macromolecular additives other than solvents, pigments or dyes · CPC title

• C09D11/101 Primary

  Inks specially adapted for printing processes involving curing by wave energy or particle radiation, e.g. with UV-curing following the printing · CPC title