초록 ▼

The present invention includes interlayers and multiple layer glazing panels comprising those interlayers, wherein the interlayers comprise poly(vinyl butyral) and a glycerol based plasticizer. The addition of the glycerol based plasticizer surprisingly results in a plasticized poly(vinyl butyral) l

The present invention includes interlayers and multiple layer glazing panels comprising those interlayers, wherein the interlayers comprise poly(vinyl butyral) and a glycerol based plasticizer. The addition of the glycerol based plasticizer surprisingly results in a plasticized poly(vinyl butyral) layer that is suitable for use in a wide range of multiple layer glazing applications.

대표청구항 ▼

1. A multiple layer glazing interlayer, comprising: a polymer layer comprising poly(vinyl butyral); and,a first plasticizer having the formula where R1, R2, and R3 can be different or the same, and can be —OH or where R4 is a hydrogen or a branched or straight chain aliphatic or aromatic hydrocarbo

1. A multiple layer glazing interlayer, comprising: a polymer layer comprising poly(vinyl butyral); and,a first plasticizer having the formula where R1, R2, and R3 can be different or the same, and can be —OH or where R4 is a hydrogen or a branched or straight chain aliphatic or aromatic hydrocarbon chain having from 3 to 14 carbons and wherein the sum of all carbons of R1, R2 and R3 is 4 to 24. 2. The interlayer of claim 1, wherein the sum of all carbons of R1, R2, and R3 is 8 to 24. 3. The interlayer of claim 1, wherein the sum of all carbons R1, R2, and R3 is 12 to 24. 4. The interlayer of claim 1, wherein the sum of all carbons of R1, R2, and R3 is 4 to 16. 5. The interlayer of claim 1, wherein the sum of all carbons of R1, R2, and R3 is 4 to 12. 6. The interlayer of claim 1, wherein R4 has 3 to 9 carbons for each of R1, R2, and R3. 7. The interlayer of claim 1, wherein said first plasticizer has the formula: 8. The interlayer of claim 1, wherein said interlayer further comprises a second plasticizer, wherein said first plasticizer is 2 to 99 weight percent of a plasticizer mixture of said first and said second plasticizer. 9. The interlayer of claim 8, wherein said first plasticizer is 5 to 25 weight percent of said plasticizer mixture. 10. The interlayer of claim 8, wherein said first plasticizer is glycerol tributyrate, and said second plasticizer is triethylene glycol di-(2-ethylhexanoate). 11. The interlayer of claim 8, wherein said second plasticizer is triethylene glycol di-(2-ethylhexanoate). 12. A multiple layer glazing comprising: a multiple layer glazing interlayer, comprising: a polymer layer comprising: poly(vinyl butyral); and,a first plasticizer having the formula where R1, R2, and R3 can be different or the same, and can be —OH or where R4 is a hydrogen or a branched or straight chain aliphatic or aromatic hydrocarbon chain having from 3 to 14 carbons and wherein the sum of all carbons of R1, R2, and R3 is 4 to 24. 13. The glazing of claim 12, wherein the sum of all carbons of R1, R2, and R3 is 8 to 24. 14. The glazing of claim 12, wherein the sum of all carbons of R1, R2, and R3 is 12 to 24. 15. The glazing of claim 12, wherein the sum of all carbons of R1, R2, and R3 is 4 to 16. 16. The glazing of claim 12, wherein the sum of all carbons of R1, R2, and R3 is 4 to 12. 17. The glazing of claim 12, wherein R4 has 3 to 9 carbons for each of R1, R2, and R3. 18. The glazing of claim 12, wherein said first plasticizer has the formula: 19. The glazing of claim 12, wherein said interlayer further comprises a second plasticizer, wherein said first plasticizer is 2 to 99 weight percent of a plasticizer mixture of said first and said second plasticizer. 20. The glazing of claim 19, wherein said first plasticizer is 5 to 99 weight percent of said plasticizer mixture. 21. The glazing of claim 19, wherein said first is glycerol tributyrate, and said second plasticizer is triethylene glycol di-(2-ethylhexanoate). 22. The glazing of claim 19, wherein said second plasticizer is triethylene glycol di-(2-ethylhexanoate). 23. A method of forming a multiple layer glazing interlayer, comprising: heating a poly(vinyl butyral) resin to a molten state;adding a first plasticizer having the formula where R1, R2, and R3 can be different or the same, and can be —OH or where R4 is a hydrogen or a branched or straight chain aliphatic or aromatic hydrocarbon chain having from 3 to 14 carbons and wherein the sum of all carbons R1, R2, and R3 is 4 to 24, to form a melt; and, forming said melt into said interlayer. 24. The method of claim 23 further comprising: adding a second plasticizer to said melt before forming said melt into said interlayer.