Fluorinated polymer sheets

• US 6,939,612 B2
• Filed: 06/03/2003
• Issued: 09/06/2005
• Est. Priority Date: 06/03/2003
• Status: Active Grant

• Current Assignee: Solutia Incorporated (Eastman Chemical Company)
• Original Assignee: Solutia Incorporated (Eastman Chemical Company)
• Inventors: Reyntjens, Wouter Gerard Simonne
• Primary Examiner(s): Nakarani, D. S.
• Application Number:
  US10/452,146
• Publication Number:
  US 20040247883A1
• Time in Patent Office: 826 Days
• Field of Search: 427/255.39, 428/436, 428/437, 428/451, 428/524
• US Class Current: 428/437
• CPC Class Codes: B32B 17/10761 containing vinyl acetal
• CPC Class Codes: C08J 2329/14 Homopolymers or copolymers of acetals or ketals obtained by polymerisation of unsaturated acetals or ketals or by after-treatment of polymers of unsaturated alcohols
• CPC Class Codes: C08J 7/126 Halogenation
• 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 428/31667 Next to addition polymer from unsaturated monomers, or aldehyde or ketone condensation product
• CPC Class Codes: Y10T 428/31942 Of aldehyde or ketone condensation product

Abstract

The present invention is in the field of polymer sheet anti-blocking and adhesion control compositions and methods, and more specifically, the present invention is in the field of polymer sheets, for example polyvinyl butyral sheets, having improved anti-blocking and adhesion properties obtained through fluorination.

Claims

1. A method of manufacturing a polymer sheet, comprising:

forming said polymer sheet, wherein said polymer sheet comprises polyvinyl butyral and has two surfaces; and

,

applying F₂ to at least one of said two surfaces.

2. The method of claim 1, wherein said F₂ is applied under conditions sufficient to impart a blocking force of less than 2.0 pounds per linear foot.

3. The method of claim 1, wherein said F₂ is applied under conditions sufficient to impart a blocking force of less than 1.5 pound per linear foot.

4. The method of claim 1, wherein said F₂ is applied under conditions sufficient to impart a blocking force of less than 1.0 pounds per linear foot.

5. The method of claim 1, wherein said F₂ is applied under conditions sufficient to impart a blocking force of less than 0.5 pounds per linear foot.

6. The method of claim 1, wherein said F₂ is applied under conditions sufficient to impart a blocking force of less than 0.3 pounds per linear foot.

7. The method of claim 1, wherein said polyvinyl butyral comprises 20 to 80 parts plasticizer per one hundred parts of resin.

8. The method of claim 1, wherein said polyvinyl butyral comprises 20 to 60 parts plasticizer per one hundred parts of resin.

9. The method of claim 8, wherein said plasticizer is selected from the group consisting of triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexanoate), triethylene glycol diheptanoate, tetraethylene glycol diheptanoate, dihexyl adipate, dioctyl adipate, hexyl cyclohexyladipate, mixtures of heptyl and nonyl adipates, diisononyl adipate, heptylnonyl adipate, dibutyl sebacate, polymeric plasticizers, oil-modified sebacic alkyds, mixtures of phosphates and adipates, adipates, mixed adipates made from C₄ to C₉ alkyl alcohols and cyclo C₄ to C₁₀ alcohols, C₆ to C₈ adipate esters, and hexyl adipate.

10. The method of claim 1, further comprising rolling said polymer sheet in the form of a roll or disposing said polymer sheet in a stack of equivalent polymer sheets.

11. The method of claim 1, wherein said F₂ is mixed with an inert gas.

12. The method of claim 1, wherein said F₂ is applied to said polymer sheet at a pressure of one atmosphere.

13. The method of claim 1, wherein said F₂ is applied to said polymer sheet for between 0.1 and 10 seconds.

14. The method of claim 1, wherein said F₂ is applied to said polymer sheet at a pressure of between 0.1 and 50 atmospheres.

15. The method of claim 1, wherein said F₂ is applied to said polymer sheet at a pressure of between 0.75 and 10 atmospheres.

16. A polymer sheet comprising polyvinyl butyral, wherein said polymer sheet is made by the process of:

forming said polymer sheet, wherein said polymer sheet has two surfaces; and

,

applying F₂ to at least one of said two surfaces.

17. The polymer sheet of claim 16, wherein said F₂ is applied in a concentration sufficient to impart a blocking force of less than 2.0 pounds per linear foot.

18. The polymer sheet of claim 16, wherein said F₂ is applied in a concentration sufficient to impart a blocking force of less than 1.5 pounds per linear foot.

19. The polymer sheet of claim 16, wherein said F₂ is applied in a concentration sufficient to impart a blocking force of less than 1.0 pounds per linear foot.

20. The polymer sheet of claim 16, wherein said F₂ is applied in a concentration sufficient to impart a blocking force of less than 0.5 pounds per linear foot.

21. The polymer sheet of claim 16, wherein said F₂ is applied in a concentration sufficient to impart a blocking force of less than 0.3 pounds per linear foot.

22. The polymer sheet of claim 16, wherein said polyvinyl butyral comprises 20 to 80 parts plasticizer per one hundred parts of resin.

23. The polymer sheet of claim 16, wherein said polyvinyl butyral comprises 20 to 60 parts plasticizer per one hundred parts of resin.

24. The polymer sheet of claim 23, wherein said plasticizer is selected from the group consisting of triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexanoate), triethylene glycol diheptanoate, tetraethylene glycol diheptanoate, dihexyl adipate, dioctyl adipate, hexyl cyclohexyladipate, mixtures of heptyl and nonyl adipates, diisononyl adipate, heptylnonyl adipate, dibutyl sebacate, polymeric plasticizers, oil-modified sebacic alkyds, mixtures of phosphates and adipates, adipates, mixed adipates made from C₄ to C₉ alkyl alcohols and cyclo C₄ to C₁₀ alcohols, C₆ to C₉ adipate esters, and hexyl adipate.

25. The polymer sheet of claim 16, wherein said polyvinyl butyral comprises about 13 to about 30 weight percent hydroxyl groups calculated as PVOH.

26. The polymer sheet of claim 16, wherein said polymer sheet is in the form of a roll or is disposed in a stack of equivalent polymer sheets.

27. A laminated glass structure comprising a layer of glass disposed in contact with a polymer sheet, wherein said polymer sheet comprises polyvinyl butyral and wherein said polymer sheet is made by the process of:

forming said polymer sheet, wherein said polymer sheet has two surfaces; and

,

applying F₂ to at least one of said two surfaces.

28. The laminated glass structure of claim 27, wherein said polyvinyl butyral comprises 20 to 80 parts plasticizer per one hundred parts of resin.

29. The laminated glass structure of claim 27, wherein said polyvinyl butyral comprises 20 to 60 parts plasticizer per one hundred parts of resin.

30. The laminated glass structure of claim 29, wherein said plasticizer is selected from the group consisting of triethylene glycol di-(2-ethylbutyrate), triethylene glycol di-(2-ethylhexanoate), triethylene glycol diheptanoate, tetraethylene glycol diheptanoate, dihexyl adipate, dioctyl adipate, hexyl cyclohexyladipate, mixtures of heptyl and nonyl adipates, diisononyl adipate, heptylnonyl adipate, dibutyl sebacate, polymeric plasticizers, oil-modified sebacic alkyds, mixtures of phosphates and adipates, adipates, mixed adipates made from C₄ to C₉ alkyl alcohols and cyclo C₄ to C₁₀ alcohols, C₆ to C₈ adipate esters, and hexyl adipate.

31. The laminated glass structure of claim 27, wherein said polyvinyl butyral comprises about 13 to about 30 weight percent hydroxyl groups calculated as PVOH.

32. The laminated glass structure of claim 27, further comprising a second layer of glass disposed in contact with said polymer sheet.