Articles having inorganic substrates and polymer film layers

Patent metadata

Field	Value
Publication number	US-12409643-B2
Application number	US-202217903762-A
Country	US
Kind code	B2
Filing date	Sep 6, 2022
Priority date	Sep 15, 2021
Publication date	Sep 9, 2025
Grant date	Sep 9, 2025

Abstract

In a first aspect, an article includes an inorganic substrate and a polymer film layer. The inorganic substrate includes a material including a ceramic, a glass, a glass-ceramic or a mixture thereof. The material includes a metal cation selected from the group consisting of silicon, aluminum, titanium, zirconium, tantalum, niobium and mixtures thereof and oxygen. The polymer film layer includes a polymer including an imide group. From an interface where the inorganic substrate contacts the polymer film layer, a line-profile of a CNO− signal from negative secondary ion mass spectroscopy decreases as it moves away from the interface and into the bulk of the polymer film layer.

First claim

What is claimed is:

1. An article comprising:
an inorganic substrate comprising a material comprising a ceramic, a glass, a glass-ceramic or a mixture thereof, wherein the material comprises:
a metal cation selected from the group consisting of silicon, aluminum, titanium, zirconium, tantalum, niobium and mixtures thereof; and
oxygen;

a polymer film layer comprising a polymer comprising an imide group, wherein, from an interface where the inorganic substrate contacts the polymer film layer, a line-profile of a CNO − signal from negative secondary ion mass spectroscopy decreases as it moves away from the interface and into the bulk of the polymer film layer; and
a hard coat layer adhered to the polymer film layer on a side opposite the inorganic substrate, wherein the hard coat layer is formed from a curable resin coating composition.

2. The article of claim 1 , wherein the polymer comprising an imide group is selected from the group consisting of polyimides, poly(amide-imides), poly(ether-imides), poly(ester-imides), copolymers comprising amide, ester or ether groups, and mixtures thereof.

3. The article of claim 2 , wherein the polyimide is derived from a dianhydride, a fluorinated aromatic diamine and an aliphatic diamine.

4. The article of claim 3 , wherein the dianhydride comprises an alicyclic dianhydride.

5. The article of claim 1 , wherein the inorganic substrate comprises glass.

6. The article of claim 1 , wherein the metal cation comprises silicon.

7. The article of claim 1 , wherein a Mode I Interlaminar Fracture Toughness (G Ic ) between the inorganic substrate and the polymer film layer is 9 J/m 2 or more.

8. The article of claim 1 , wherein the polymer film layer has a T g of 300° C. or less.

9. The article of claim 1 , wherein the article has a b* of 1.25 or less and a yellowness index of 2.25 or less when measured using the procedure described by ASTM E313 at a thickness of 25 μm.

10. The article of claim 1 , wherein the article has a haze of 15% or less and an L* of 93 or more when measured at a thickness of 25 μm.

11. An impact-resistant article comprising the article of claim 1 .

12. A penetration-resistant article comprising the article of claim 1 .

13. A sound-reducing article comprising the article of claim 1 .

14. An article comprising:
an inorganic substrate comprising a material comprising a ceramic, a glass, a glass-ceramic or a mixture thereof, wherein the material comprises:
a metal cation selected from the group consisting of silicon, aluminum, titanium, zirconium, tantalum, niobium and mixtures thereof; and
oxygen;

a polymer film layer comprising a polymer comprising an imide group, wherein, a Mode I Interlaminar Fracture Toughness (G Ic ) between the polymer film layer and the inorganic substrate layer is 9 J/m 2 or more; and
a hard coat layer adhered to the polymer film layer on a side opposite the inorganic substrate, wherein the hard coat layer is formed from a curable resin coating composition.

15. The article of claim 14 , wherein the polymer comprising an imide group is selected from the group consisting of polyimides, poly(amide-imides), poly(ether-imides), poly(ester-imides), copolymers comprising amide, ester or ether groups, and mixtures thereof.

16. The article of claim 15 , wherein the polyimide is derived from a dianhydride, a fluorinated aromatic diamine and an aliphatic diamine.

17. The article of claim 16 , wherein the dianhydride comprises an alicyclic dianhydride.

18. The article of claim 14 , wherein the inorganic substrate comprises glass.

19. The article of claim 14 , wherein the metal cation comprises silicon.

20. The article of claim 14 , wherein the article has a b* of 1.25 or less and a yellowness index of 2.25 or less when measured using the procedure described by ASTM E313 at a thickness of 25 μm.

21. The article of claim 14 , wherein the article has a haze of 15% or less and an L* of 93 or more when measured at a thickness of 25 μm.

22. An impact-resistant article comprising the article of claim 14 .

23. A penetration-resistant article comprising the article of claim 14 .

24. A sound-reducing article comprising the article of claim 14 .

25. The article of claim 14 , wherein the polymer film layer has a T g of 300° C. or less.

Assignees

• Dupont Electronics Inc

Inventors

• Kourtakis Kostantinos
• Samson Benjamin
• Hernandez Kenneth
• Johnson Ross S
• Walls Dennis
• Xiao Neng
• Zhang Lei
• Johnson Joseph Casey

Classifications

• B32B2307/102

  Insulating · CPC title

• B32B2250/03

  3 layers · CPC title

• B32B2307/412

  Transparent · CPC title

• B32B2307/558

  Impact strength, toughness · CPC title

• B32B2571/02

  defensive, e.g. armour plates or anti-ballistic clothing · CPC title