Fluorinated polymer sheets
View Patent ↗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.
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 F 2 to at least one of said two surfaces.
2. The method of claim 1 , wherein said F 2 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 F 2 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 F 2 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 F 2 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 F 2 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 C 4 to C 9 alkyl alcohols and cyclo C 4 to C 10 alcohols, C 6 to C 8 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 F 2 is mixed with an inert gas.
12. The method of claim 1 , wherein said F 2 is applied to said polymer sheet at a pressure of one atmosphere.
13. The method of claim 1 , wherein said F 2 is applied to said polymer sheet for between 0.1 and 10 seconds.
14. The method of claim 1 , wherein said F 2 is applied to said polymer sheet at a pressure of between 0.1 and 50 atmospheres.
15. The method of claim 1 , wherein said F 2 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 F 2 to at least one of said two surfaces.
17. The polymer sheet of claim 16 , wherein said F 2 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 F 2 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 F 2 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 F 2 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 F 2 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 C 4 to C 9 alkyl alcohols and cyclo C 4 to C 10 alcohols, C 6 to C 9 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 F 2 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 C 4 to C 9 alkyl alcohols and cyclo C 4 to C 10 alcohols, C 6 to C 8 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.