IP Library › Granted Patent US 7,854,993
Granted Patent B2
US 7,854,993 · App. 12/371,558 · Granted Dec 21, 2010

Sound reducing polymer interlayers

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Quick Facts
Patent No.
US 7,854,993
App. No.
12/371,558
Granted
Dec 21, 2010
Kind
B2
Abstract

The present invention is in the field of polymer interlayers and multiple layer glass panels comprising polymer interlayers, and, more specifically, the present invention is in the field of polymer interlayers comprising multiple thermoplastic sheets.

Claims (70)

1. A polymer interlayer comprising:

a first polymer sheet comprising a plasticized poly(vinyl butyral);

a second polymer sheet comprising a plasticized poly(vinyl butyral), wherein said second polymer sheet is in direct contact with said first polymer sheet;

a third polymer sheet comprising a plasticized poly(vinyl butyral), wherein said third polymer sheet is in direct contact with said second polymer sheet;

wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 12 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet;

wherein said second polymer sheet has a residual hydroxyl content per weight percentage that is at least 2% lower than the residual hydroxyl content per weight percentage of either said first polymer sheet or said third polymer sheet; and,

wherein said first polymer sheet and said second polymer sheet each have a residual acetate content of less than 5 mol percent.

2. The interlayer of claim 1 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 15 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

3. The interlayer of claim 1 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 18 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

4. The interlayer of claim 1 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 20 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

5. The interlayer of claim 1 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 25 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

6. The interlayer of claim 1 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 25% and said second polymer sheet has a residual hydroxyl content of less than 23%.

7. The interlayer of claim 1 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 23% and said second polymer sheet has a residual hydroxyl content of less than 21%.

8. The interlayer of claim 1 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 21% and said second polymer sheet has a residual hydroxyl content of less than 19%.

9. The interlayer of claim 1 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 20% and said second polymer sheet has a residual hydroxyl content of less than 17%.

10. A polymer interlayer comprising:

a first polymer sheet comprising a plasticized poly(vinyl butyral);

a second polymer sheet comprising a plasticized poly(vinyl butyral), wherein said second polymer sheet is in direct contact with said first polymer sheet;

a third polymer sheet comprising a plasticized poly(vinyl butyral), wherein said third polymer sheet is in direct contact with said second polymer sheet;

wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 10 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet;

wherein said second polymer sheet has a residual hydroxyl content per weight percentage that is at least 2% lower than the residual hydroxyl content per weight percentage of either said first polymer sheet or said third polymer sheet;

wherein said first polymer sheet and said second polymer sheet each have a residual acetate content of less than 5 mol percent; and,

wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 23% and said second polymer sheet has a residual hydroxyl content of less than 21%.

11. The interlayer of claim 10 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 15 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

12. The interlayer of claim 10 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 18 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

13. The interlayer of claim 10 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 20 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

14. The interlayer of claim 10 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 25 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

15. The interlayer of claim 10 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 21% and said second polymer sheet has a residual hydroxyl content of less than 19%.

16. The interlayer of claim 10 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 20% and said second polymer sheet has a residual hydroxyl content of less than 17%.

17. The interlayer of claim 10 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 18% and said second polymer sheet has a residual hydroxyl content of less than 15%.

18. The interlayer of claim 10 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 15% and said second polymer sheet has a residual hydroxyl content of less than 12%.

19. A polymer interlayer comprising:

a first polymer sheet comprising plasticized poly(vinyl butyral);

a second polymer sheet comprising plasticized poly(vinyl butyral), wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 10 parts per hundred greater than the amount of plasticizer in said plasticized poly(vinyl butyral) of said first polymer sheet, wherein said second polymer sheet has a residual hydroxyl content per weight percentage that is at least 2% lower than the residual hydroxyl content per weight percentage of said first polymer sheet, wherein said first polymer sheet and said second polymer sheet are in direct contact with each other, and wherein said first polymer sheet and said second polymer sheet each have a residual acetate content of less than 5 mol percent;

a third polymer sheet disposed in contact with said second polymer sheet, wherein said third polymer sheet comprises plasticized poly(vinyl butyral) and wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 10 parts per hundred greater than the amount of plasticizer in said plasticized poly(vinyl butyral) of said third polymer sheet; and,

wherein the amount of plasticizer in said second polymer sheet remains at least 10 parts per hundred greater than the amount of plasticizer in said first polymer sheet and said third polymer sheet.

20. The polymer interlayer of claim 19 , wherein the amount of plasticizer in said second polymer sheet remains at least 10 parts per hundred greater than the amount of plasticizer in said first polymer sheet and said third polymer sheet after remaining in contact with said second polymer sheet and said third polymer sheet for at least four weeks.

21. A multiple layer glass panel, comprising,

a polymer interlayer, comprising:

a first polymer sheet comprising a plasticized poly(vinyl butyral);

a second polymer sheet comprising a plasticized poly(vinyl butyral), wherein said second polymer sheet is in direct contact with said first polymer sheet;

a third polymer sheet comprising a plasticized poly(vinyl butyral), wherein said third polymer sheet is in direct contact with said second polymer sheet;

wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 12 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet;

wherein said second polymer sheet has a residual hydroxyl content per weight percentage that is at least 2% lower than the residual hydroxyl content per weight percentage of either said first polymer sheet or said third polymer sheet; and,

wherein said first polymer sheet and said second polymer sheet each have a residual acetate content of less than 5 mol percent.

22. The panel of claim 21 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 15 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

23. The panel of claim 21 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 18 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

24. The panel of claim 21 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 20 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

25. The panel of claim 21 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 25 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

26. The panel of claim 21 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 25% and said second polymer sheet has a residual hydroxyl content of less than 23%.

27. The panel of claim 21 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 23% and said second polymer sheet has a residual hydroxyl content of less than 21%.

28. The panel of claim 21 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 21% and said second polymer sheet has a residual hydroxyl content of less than 19%.

29. The panel of claim 21 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 20% and said second polymer sheet has a residual hydroxyl content of less than 17%.

30. A multiple layer glass panel, comprising,

a polymer interlayer comprising:

a first polymer sheet comprising a plasticized poly(vinyl butyral);

a second polymer sheet comprising a plasticized poly(vinyl butyral), wherein said second polymer sheet is in direct contact with said first polymer sheet;

a third polymer sheet comprising a plasticized poly(vinyl butyral), wherein said third polymer sheet is in direct contact with said second polymer sheet;

wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 10 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet;

wherein said second polymer sheet has a residual hydroxyl content per weight percentage that is at least 2% lower than the residual hydroxyl content per weight percentage of either said first polymer sheet or said third polymer sheet;

wherein said first polymer sheet and said second polymer sheet each have a residual acetate content of less than 5 mol percent; and,

wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 23% and said second polymer sheet has a residual hydroxyl content of less than 21%.

31. The panel of claim 30 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 15 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

32. The panel of claim 30 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 18 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

33. The panel of claim 30 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 20 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

34. The panel of claim 30 , wherein the amount of plasticizer in said plasticized poly(vinyl butyral) of said second polymer sheet is at least 25 parts per hundred greater than the amount of plasticizer in either said plasticized poly(vinyl butyral) of said first polymer sheet or said plasticized poly(vinyl butyral) of said third polymer sheet.

35. The panel of claim 30 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 21% and said second polymer sheet has a residual hydroxyl content of less than 19%.

36. The panel of claim 30 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 20% and said second polymer sheet has a residual hydroxyl content of less than 17%.

37. The panel of claim 30 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 18% and said second polymer sheet has a residual hydroxyl content of less than 15%.

38. The panel of claim 30 , wherein said first polymer sheet and said third polymer sheet each have a residual hydroxyl content of less than 15% and said second polymer sheet has a residual hydroxyl content of less than 12%.

Assignments (1)
RELEASE OF SECURITY INTEREST Recorded Jul 17, 2012
From: DEUTSCHE BANK TRUST COMPANY AMERICAS, AS COLLATERAL AGENT
To: SOLUTIA INC.; CPFILMS INC.; FLEXSYS AMERICA L.P.
Reel/Frame 028563/0241 →