Silver coated mirror

• US 6,749,307 B2
• Filed: 12/16/2002
• Issued: 06/15/2004
• Est. Priority Date: 05/12/1994
• Status: Expired due to Fees

• Current Assignee: Glaverbel
• Original Assignee: Glaverbel
• Inventors: Boulanger, Pierre, Laroche, Pierre, Dauby, Christian
• Primary Examiner(s): Juba, Jr., John
• Application Number:
  US10/319,557
• Publication Number:
  US 20030099048A1
• Time in Patent Office: 547 Days
• Field of Search: 427/162, 427/165, 427/168, 427/204, 427/404, 427/409, 427/421, 427/426, 427/443.1, 427/443.2, 428/687, 428/912.2, 359/838, 359/883
• US Class Current: 359/838
• CPC Class Codes: C03C 17/38 at least one coating being a coating of an organic material
• CPC Class Codes: C23C 18/1651 Two or more layers only obtained by electroless plating
• CPC Class Codes: C23C 18/1658 with two steps starting with metal deposition followed by addition of reducing agent
• CPC Class Codes: C23C 18/166 with two steps starting with addition of reducing agent followed by metal deposition
• CPC Class Codes: C23C 18/1855 by mechanical pretreatment, e.g. grinding, sanding
• CPC Class Codes: C23C 18/1879 Use of metal, e.g. activation, sensitisation with noble metals
• CPC Class Codes: C23C 18/1889 with use of metal first
• CPC Class Codes: G02B 5/0808 having a single reflecting layer G02B5/0883, G02B5/0891 take precedence
• CPC Class Codes: Y10S 359/90 Methods

Abstract

A domestic or vehicle rearview silvered mirror having a silver coating which is not covered with a protective layer of copper. The silver mirror comprises a glass sheet, tin and preferably palladium at surface of the glass sheet, a silver coating of the surface of the glass sheet and at least one paint layer covering the silver coating. Optionally, tin may be present at the surface of the silver coating adjacent the paint layer and optionally traces of silane may be present at the surface of the silver coating adjacent to the paint layer. Alternate or additional materials may be present at a surface of the glass sheet and alternate or additional materials may be present at the surface of the silver adjacent to the paint layer.

Claims

1. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet,

tin and palladium at a surface of the glass sheet,

a silver coating on said surface of the glass sheet, and

at least one paint layer covering the silver coating.

2. The silver mirror according to claim 1 wherein chlorine is present at the said surface of the glass sheet.

3. The silver mirror according to claim 1 wherein the silver coating has a thickness of 70 to 100 nm.

4. The silver mirror according to claim 1 wherein the palladium is provided as islets at the surface of the glass sheet.

5. The silver mirror according to claim 1 wherein the palladium is present at said surface of the glass sheet in a quantity of not more than 3.6 mg per square meter.

6. The silver mirror according to claim 1 wherein the at least one layer of paint is substantially lead-free.

7. The silver mirror according to claim 1 which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated ageing CASS Test.

8. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet

tin and palladium at a surface of the glass sheet,

a silver coating on said surface of the glass sheet,

tin present at the surface of the silver coating adjacent to at least one paint layer covering the silver coating, and

at least one paint layer covering the silver coating layer.

9. The silver mirror according to claim 8 wherein chlorine is present at the said surface of the glass sheet.

10. The silver mirror according to claim 8 wherein the silver coating has a thickness of 70 to 100 nm.

11. The silver mirror according to claim 8 wherein the palladium is provided as islets at the surface of the glass sheet.

12. The silver mirror according to claim 8 wherein the palladium is present at said surface of the glass sheet in a quantity of not more than 3.6 mg per square meter.

13. The silver mirror according to claim 8 wherein the at least one layer of paint is substantially lead-free.

14. The silver mirror according to claim 8 which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated aging CASS Test.

15. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet,

tin and palladium at a surface of the glass sheet,

a silver coating on said surface of the glass sheet,

tin present at the surface of the silver coating adjacent to at least one paint layer covering the silver coating,

traces of silane present at the surface of the silver coating which is adjacent to the at least one paint layer, and

at least one paint layer covering the silver coating layer.

16. The silver mirror according to claim 15 wherein chlorine is present at the said surface of the glass sheet.

17. The silver mirror according to claim 15 wherein the silver coating has a thickness of 70 to 100 nm.

18. The silver mirror according to claim 15 wherein the palladium is provided as islets at the surface of the glass sheet.

19. The silver mirror according to claim 15 wherein the palladium is present at said surface of the glass sheet in a quantity of not more than 3.6 mg per square meter.

20. The silver mirror according to claim 15 wherein the at least one layer of paint is substantially lead-free.

21. The silver mirror according to claim 15 which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated aging CASS Test.

22. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet,

tin and palladium at a surface of the glass sheet,

a silver coating on said surface of the glass sheet,

at least one material selected from chromium, vanadium, titanium, iron, indium, copper and aluminum present at the surface of the silver coating adjacent to at least one paint layer covering the silver coating, and

at least one paint layer covering the silver coating layer.

23. The silver mirror according to claim 22 wherein chlorine is present at the said surface of the glass sheet.

24. The silver mirror according to claim 22 wherein the silver coating has thickness of 70 to 100 nm.

25. The silver mirror according to claim 22 wherein the palladium is provided as islets at the surface of the glass sheet.

26. The silver mirror according to claim 22 wherein the palladium is present at said surface of the glass sheet in a quantity of not more than 3.6 mg per square meter.

27. The silver mirror according to claim 22 wherein the at least one layer of paint is substantially lead-free.

28. The silver mirror according to claim 22 wherein traces of silane are present at the surface of the silver coating which is adjacent to the at least one paint layer.

29. The silver mirror according to claim 22 which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated aging CASS Test.

30. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet,

tin and at least one material selected from the group consisting of bismuth, chromium, gold, indium, nickel, platinum, rhodium, ruthenium, titanium, vanadium, and zinc at a surface of the glass sheet,

a silver coating on said surface of the glass sheet, and

at least one paint layer covering the silver coating layer.

31. The silver mirror according to claim 30 wherein chlorine is present at the said surface of the glass sheet.

32. The silver mirror according to claim 30 wherein the silver coating has a thickness of 70 to 100 nm.

33. The silver mirror according to claim 30, wherein the at least one material selected from the group consisting of bismuth, chromium, gold, indium, nickel, platinum, rhodium, ruthenium, titanium, vanadium and zinc is provided as islets at the surface of the glass sheet.

34. The silver mirror according to claim 30, wherein the at least one layer of paint is substantially lead-free.

35. The silver mirror according to claim 30, which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated aging CASS Test.

36. A silver mirror selected from a domestic mirror and a vehicle rear-view mirror, the silver mirror having a silver coating which is not covered with a protective layer of copper, said silver mirror comprising in the order recited:

a glass sheet,

tin and at least one material selected from the group consisting of bismuth, chromium, gold, indium, nickel, platinum, rhodium, ruthenium, titanium, vanadium, and zinc at said surface of the glass sheet,

a silver coating on said surface of the glass sheet,

at least one material selected from the group consisting of chromium, vanadium, titanium, iron, indium, copper, tin and aluminum present at the surface of the silver coating adjacent to at least one paint layer covering the silver coating, and

at least one paint layer covering the silver coating.

37. The silver mirror according to claim 36 wherein chlorine is present at the said surface of the glass sheet.

38. The silver mirror according to claim 36 wherein the silver coating has a thickness of 70 to 100 nm.

39. The silver mirror according to claim 36 wherein the at least one material selected from the group consisting of bismuth, chromium, gold, indium, nickel, platinum, rhodium, ruthenium, titanium, vanadium and zinc is provided as islets at the surface of the glass sheet.

40. The silver mirror according to claim 36 wherein the at least one layer of paint is substantially lead-free.

41. The silver mirror according to claim 36 wherein traces of silane are present at the surface of the silver coating which is adjacent to the at least one paint layer.

42. The silver mirror according to claim 36 which has an average edge corrosion of less than 480 μ

m after having been subjected to a 120 hour accelerated aging CASS Test.