Polyvinyl butyral sheet with bifunctional surface modifying agent
View Patent ↗A polymer sheet having enhanced blocking resistance properties comprising a bifunctional surface modifying agent disposed at a surface of the plasticized polyvinyl butyral sheet. The bifunctional surface modifying agent comprises an anti-blocking segment comprising a polyethylene block or a hydrocarbon chain block and a compatibility segment comprising a poly(alkylene glycol) block. A method of manufacturing a polymer sheet having enhanced blocking resistance properties comprises melt processing a polymer into a sheet and disposing a bifunctional surface modifying agent at a surface of the polymer sheet, the bifunctional surface modifying agent comprising a polyethylene block or a hydrocarbon chain block and a poly(alkylene glycol) block. A method of enhancing the blocking resistance of a polymer sheet comprises disposing a bifunctional surface modifying agent at a surface of the polymer sheet, the bifunctional surface modifying agent comprising an anti-blocking segment comprising a polyethylene block or a hydrocarbon chain block and a compatibility segment comprising a poly(alkylene glycol) block.
1. A polymer sheet, comprising:
a bifunctional surface modifying agent, said bifunctional surface modifying agent comprising,
an anti-blocking segment, and
a compatibility segment, wherein said bifunctional surface modifying agent comprises a polyethylene-block-poly(ethylene glycol) polymer.
2. The polymer sheet of claim 1 , wherein said bifunctional surface modifying agent is sprayed onto a surface of said polymer sheet.
3. The polymer sheet of claim 1 , wherein said bifunctional surface modifying agent is disposed on a surface of said polymer sheet by immersing said polymer sheet into a solution containing said bifunctional surface modifying agent.
4. The polymer sheet of claim 1 , wherein said bifunctional surface modifying agent is melt-blended into a polymer melt used to form said polymer sheet.
5. The polymer sheet of claim 1 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 50 to about 30,000 ppm.
6. The polymer sheet of claim 1 , wherein an amount of bifunctional surface modifying agent disposed at on said polymer sheet is about 150 to about 10,000 ppm.
7. The polymer sheet of claim 1 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 300 to about 5,000 ppm.
8. The polymer sheet of claim 1 wherein said polymer sheet comprises a polymer selected from the group consisting of polyvinyl butyral, polyurethane, polyvinyl chloride, poly(ethylene-co-vinyl acetate), and combinations thereof.
9. The polymer sheet of claim 8 wherein said polymer is polyvinyl butyral.
10. The polymer sheet of claim 9 wherein said polymer is a polyvinyl butyral resin comprising about 13 to about 30 weight percent hydroxyl groups calculated as PVOH.
11. The polymer sheet of claim 9 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 20 to 80 parts plasticizer per one hundred parts of resin.
12. The polymer sheet of claim 11 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 25 to 60 parts plasticizer per one hundred parts of resin.
13. The polymer sheet of claim 12 wherein said polymer is a plasticized polyvinyl butyral wherein the 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, and mixtures thereof.
14. A polymer sheet, comprising:
a bifunctional surface modifying agent, said bifunctional surface modifying agent comprising,
an anti-blocking segment, and
a compatibility segment, wherein said bifunctional surface modifying agent comprises an amphiphilic polyethylene-block-poly(ethylene glycol) polymer having the general formula:
CH 3 CH 2 (CH 2 CH 2 ) m —(OCH 2 CH 2 ) n OH
wherein m is about 5 to about 24 and n is about 3 to about 30.
15. The polymer sheet of claim 14 , wherein said bifunctional surface modifying agent is sprayed onto a surface of said polymer sheet.
16. The polymer sheet of claim 14 , wherein said bifunctional surface modifying agent is disposed on a surface of said polymer sheet by immersing said polymer sheet into a solution containing said bifunctional surface modifying agent.
17. The polymer sheet of claim 14 , wherein said bifunctional surface modifying agent is melt-blended into a polymer melt used to form said polymer sheet.
18. The polymer sheet of claim 14 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 50 to about 30,000 ppm.
19. The polymer sheet of claim 14 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 150 to about 10,000 ppm.
20. The polymer sheet of claim 14 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 300 to about 5,000 ppm.
21. The polymer sheet of claim 14 wherein said polymer sheet comprises a polymer selected from the group consisting of polyvinyl butyral, polyurethane, polyvinyl chloride, poly(ethylene-co-vinyl acetate), and combinations thereof.
22. The polymer sheet of claim 21 wherein said polymer is polyvinyl butyral.
23. The polymer sheet of claim 22 wherein said polymer is a polyvinyl butyral resin comprising about 13 to about 30 weight percent hydroxyl groups calculated as PVOH.
24. The polymer sheet of claim 22 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 20 to 80 parts plasticizer per one hundred parts of resin.
25. The polymer sheet of claim 24 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 25 to 60 parts plasticizer per one hundred parts of resin.
26. The polymer sheet of claim 25 wherein said polymer is a plasticized polyvinyl butyral wherein the 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, and mixtures thereof.
27. A laminated safety glass comprising two sheets of glass with an interlayer polymer sheet disposed therebetween wherein said polymer sheet comprises a bifunctional surface modifying agent, said bifunctional surface modifying agent comprising,
an anti-blocking segment, and
a compatibility segment, wherein said bifunctional surface modifying agent comprises a polyethylene-block-poly(ethylene glycol) polymer.
28. The laminated safety glass of claim 27 , wherein said polyethylene-block-poly(ethylene glycol) polymer has the general formula:
CH 3 CH 2 (CH 2 CH 2 ) m —(OCH 2 CH 2 ) n OH
wherein m is about 5 to about 24 and n is about 3 to about 30.
29. The laminated safety glass of claim 28 , wherein said bifunctional surface modifying agent is sprayed onto a surface of said polymer sheet.
30. The laminated safety glass of claim 28 , wherein said bifunctional surface modifying agent is disposed on a surface of said polymer sheet by immersing said polymer sheet into a solution containing said bifunctional surface modifying agent.
31. The laminated safety glass of claim 28 , wherein said bifunctional surface modifying agent is melt-blended into a polymer melt used to form said polymer sheet.
32. The laminated safety glass of claim 28 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 50 to about 30,000 ppm.
33. The laminated safety glass of claim 28 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 150 to about 10,000 ppm.
34. The laminated safety glass of claim 28 , wherein an amount of bifunctional surface modifying agent disposed on said polymer sheet is about 300 to about 5,000 ppm.
35. The laminated safety glass of claim 28 wherein said polymer sheet comprises a polymer selected from the group consisting of polyvinyl butyral, polyurethane, polyvinyl chloride, poly(ethylene-co-vinyl acetate), and combinations thereof.
36. The laminated safety glass of claim 35 wherein said polymer is polyvinyl butyral.
37. The laminated safety glass of claim 36 wherein said polymer is a polyvinyl butyral resin comprising about 13 to about 30 weight percent hydroxyl groups calculated as PVOH.
38. The laminated safety glass of claim 36 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 20 to 80 parts plasticizer per one hundred parts of resin.
39. The laminated safety glass of claim 36 wherein said polymer is a plasticized polyvinyl butyral wherein the plasticizer comprises about 25 to 60 parts plasticizer per one hundred parts of resin.
40. The laminated safety glass of claim 39 wherein said polymer is a plasticized polyvinyl butyral wherein the 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, and mixtures thereof.