Fire resistant polymer sheets

• US 20060093832A1
• Filed: 11/02/2004
• Published: 05/04/2006
• Est. Priority Date: 11/02/2004
• Status: Active Grant

• Current Assignee: Solutia Incorporated (Eastman Chemical Company)
• Original Assignee: Solutia Incorporated (Eastman Chemical Company)
• Inventors: Ma, Yinong
• Granted Patent: US 7,238,427 B2
• Time in Patent Office: Days
• US Class Current: 428/426
• CPC Class Codes: B32B 17/10005 laminated safety glass or glazing
• CPC Class Codes: B32B 17/10036 comprising two outer glass sheets
• CPC Class Codes: B32B 17/10605 Type of plasticiser
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: B32B 2274/00 Thermoplastic elastomer material thermoplastic elastomer fibres B32B2262/0215, thermoplastic elastomer particles B32B2264/0221, thermoplastic elastomer foam B32B2266/0292
• CPC Class Codes: B32B 2307/3065 Flame resistant or retardant, fire resistant or retardant
• CPC Class Codes: B32B 2367/00 Polyesters, e.g. PET, i.e. polyethylene terephthalate
• CPC Class Codes: B32B 2605/006 Transparent parts other than made from inorganic glass, e.g. polycarbonate glazings
• CPC Class Codes: B32B 27/08 of synthetic resin
• CPC Class Codes: B32B 27/18 characterised by the use of special additives
• CPC Class Codes: B32B 27/22 using plasticisers
• CPC Class Codes: B32B 27/36 comprising polyesters
• CPC Class Codes: B32B 27/42 comprising condensation resins of aldehydes, e.g. with phenols, ureas or melamines
• CPC Class Codes: C08K 5/1515 Three-membered rings
• CPC Class Codes: C08K 5/521 Esters of phosphoric acids, e.g. of H3PO4
• CPC Class Codes: Y10T 428/3154 Of fluorinated addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31627 Next to aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/3163 Next to acetal of polymerized unsaturated alcohol [e.g., formal butyral, etc.]
• CPC Class Codes: Y10T 428/31645 Next to addition polymer from unsaturated monomers
• CPC Class Codes: Y10T 428/31649 Ester, halide or nitrile of addition polymer

Abstract

The present invention is in the field of polymer sheets for use in multiple layer glass panels, and more specifically, the present invention is in the field of polymer sheets comprising agents that improve fire resistance in the polymer sheets.

Claims

1. A multiple layer glass panel, comprising a fire resistant panel, wherein said fire resistant panel consists essentially of:

two layers of glass; and

,

a polymer sheet disposed between said two layers of glass, wherein said polymer sheet comprises a thermoplastic polymer and a phosphate ester plasticizer and wherein no additional plasticizer is present in said polymer sheet.

2. The panel of claim 1, wherein said thermoplastic polymer is poly(vinyl butyral).

3. The panel of claim 2, wherein said poly(vinyl butyral) has a residual poly(vinyl alcohol) content of 10% to 50%.

4. The panel of claim 2, wherein said polymer sheet comprises 5-80 parts per hundred resin of said plasticizer.

5. The panel of claim 2, wherein said polymer sheet comprises 15-60 parts per hundred resin of said plasticizer.

6. The panel of claim 2, wherein said plasticizer comprises a monomeric phosphate ester.

7. The panel of claim 2, wherein said polymer sheet further comprises an acid stabilizer.

8. The panel of claim 2, wherein said polymer sheet further comprises an epoxide stabilizer.

9. The panel of claim 2, wherein said polymer sheet further comprises a polyglycol di-epoxide agent, 2-ethylhexyl (3,4-epoxycyclohexyl) carboxylate, or both.

10. The panel of claim 2, wherein said polymer sheet further comprises an agent selected from the group consisting of dyes, pigments, stabilizers, antioxidants, antiblock agents, infrared absorbers, and combinations of the foregoing.

11. A multiple layer glass panel, comprising:

a fire resistant panel, wherein said fire resistant panel consists essentially of;

a first layer of glass;

a second layer of glass; and

, a polymer sheet disposed between said first layer and said second layer of glass, wherein said polymer sheet comprises a thermoplastic polymer and a phosphate ester plasticizer and wherein no additional plasticizer is present in said polymer sheet; and

,

a fire resistant layer disposed in contact with said second layer of glass opposite said polymer sheet.

12. The panel of claim 11, wherein said thermoplastic polymer is poly(vinyl butyral).

13. The panel of claim 12, wherein said poly(vinyl butyral) has a residual poly(vinyl alcohol) content, by weight, of 10% to 50% percent.

14. The panel of claim 12, wherein said polymer sheet comprises 5-80 parts per hundred resin of said plasticizer.

15. The panel of claim 12, wherein said polymer sheet comprises 15-60 parts per hundred resin of said plasticizer.

16. The panel of claim 12, wherein said plasticizer comprises a monomeric phosphate ester.

17. The panel of claim 12, wherein said polymer sheet further comprises an acid stabilizer.

18. The panel of claim 12, wherein said polymer sheet further comprises an epoxide stabilizer.

19. The panel of claim 12, wherein said polymer sheet further comprises a polyglycol di-epoxide agent, 2-ethylhexyl (3,4-epoxycyclohexyl) carboxylate, or both.

20. The panel of claim 12, wherein said polymer sheet further comprises an agent selected from the group consisting of dyes, pigments, stabilizers, antioxidants, antiblock agents, infrared absorbers, and combinations of the foregoing.

21. The panel of claim 12, wherein said fire resistant layer comprises an intumescent material.

22. The panel of claim 21, wherein said intumescent material is a hydrated sodium silicate.

23. The panel of claim 12, wherein said fire resistant layer comprises tetrafluoroethylene/hexafluoropropylene/vinylidene fluoride.

24. The panel of claim 12, wherein said fire resistant layer comprises a phosphate ester.

25. A multiple layer glass panel, comprising a fire resistant panel, wherein said fire resistant panel consists essentially of:

two layers of glass;

a first polymer sheet disposed between said two layers of glass, wherein said polymer sheet comprises a thermoplastic polymer and a phosphate ester plasticizer and wherein no additional plasticizer is present in said polymer sheet; and

one to ten additional layers laminated with said first polymer sheet and disposed between said two layers of glass, wherein said one to ten additional layers can be any of the following constructs;

a polymer film disposed between a second polymer sheet and a third polymer sheet, with 0 to 7 further layers of polymer film and polymer sheet;

or,

0 to 10 further layers of polymer sheet.

26. The panel of claim 25, wherein said thermoplastic polymer is poly(vinyl butyral).

27. The panel of claim 26, wherein said poly(vinyl butyral) has a residual poly(vinyl alcohol) content of 10% to 50%.

28. The panel of claim 26, wherein said first polymer sheet comprises 5-80 parts per hundred resin of said plasticizer.

29. The panel of claim 26, wherein said first polymer sheet comprises 15-60 parts per hundred resin of said plasticizer.

30. The panel of claim 26, wherein said plasticizer comprises a monomeric phosphate ester.

31. The panel of claim 26, wherein said first polymer sheet further comprises an acid stabilizer.

32. The panel of claim 26, wherein said first polymer sheet further comprises an epoxide stabilizer.

33. The panel of claim 26, wherein said first polymer sheet further comprises a polyglycol di-epoxide agent, 2-ethylhexyl (3,4-epoxycyclohexyl) carboxylate, or both.

34. The panel of claim 26, wherein said first polymer sheet further comprises an agent selected from the group consisting of dyes, pigments, stabilizers, antioxidants, antiblock agents, infrared absorbers, and combinations of the foregoing.

35. The panel of claim 26, wherein said polymer film comprise poly(ethylene terephthalate).

36. The panel of claim 26, wherein one or more of said second polymer sheet, said third polymer sheet, and said further polymer sheets comprise a phosphate ester plasticizer.

37. A multiple layer glass panel interlayer, comprising

a polymer sheet comprising a thermoplastic polymer, a phosphate ester plasticizer, and an acid stabilizer agent.

38. The interlayer of claim 37, wherein said acid stabilizer agent is an epoxide.

39. The interlayer of claim 38, wherein said thermoplastic polymer is poly(vinyl butyral).

40. The interlayer of claim 39, wherein said poly(vinyl butyral) has a residual poly(vinyl alcohol) content of 10% to 50%.

41. The interlayer of claim 39, wherein said polymer sheet comprises 5-80 parts per hundred resin of said plasticizer.

42. The interlayer of claim 39, wherein said polymer sheet comprises 15-60 parts per hundred resin of said plasticizer.

43. The interlayer of claim 39, wherein said plasticizer comprises a monomeric phosphate ester.

44. The interlayer of claim 39, wherein said polymer sheet further comprises a polyglycol di-epoxide agent, 2-ethylhexyl (3,4-epoxycyclohexyl) carboxylate, or both.

45. The interlayer of claim 39, wherein said polymer sheet further comprises an agent selected from the group consisting of dyes, pigments, stabilizers, antioxidants, antiblock agents, infrared absorbers, and combinations of the foregoing.