Claims
- 1. A film, sheet or molded article having an oxygen permeability rate of less than 40.0 cc-mils/100 in 2 -24 hrs-atm prepared from an amorphous copolyester, wherein the amorphous copolyester is the reaction product of a diol component and a dicarboxylic acid component, wherein: the diol component comprises residues of from about 5 to about 50 mole % of 2,2′-(sulfonylbis (4,1-phenyleneoxy))-bis(ethanol) and from about 50 to about 95 mole % of a mixture of at least two diols selected from the group consisting of ethylene glycol, neopentyl glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, and mixtures thereof, and the dicarboxylic acid component comprises residues of at least one compound selected from group consisting of terephthalic acid, isophthalic acid, 1,4-cyclohexandedicarboxylic acid, 2,6-naphthalene dicarboxylic acid, anhydrides thereof, acid chlorides thereof, lower alkyl esters thereof, and mixtures thereof.
- 2. The film, sheet or molded article according to claim 1, wherein the 2,2′-(sulfonylbis (4,1-phenyleneoxy))bis(ethanol) is present at from about 10 to about 50 mole %.
- 3. The film, sheet or molded article according to claim 1, wherein the mixture of at least two diols comprise a mixture of ethylene glycol, neopentyl glycol and 1,4-cyclohexanedimethanol.
- 4. The film, sheet or molded article according to claim 1, wherein the diol component comprises residues of from about 10 to about 50 mole % of 2,2′-(sulfonylbis (4,1-phenyleneoxy))-bis(ethanol); and from about 50 to about 90 mole % of at least two diols selected from the group consisting of ethylene glycol, neopentyl glycol, 1,4-cyclohexanedimethanol, and mixtures thereof.
- 5. The film, sheet or molded article according to claim 1, wherein the dicarboxylic acid component comprises residues of terephthalic acid.
- 6. The film, sheet or molded article according to claim 1, wherein the amorphous copolyester has an inherent viscosity of at least about 0.6.
- 7. The film, sheet or molded article according to claim 6, wherein the amorphous copolyester has an inherent viscosity ranging from about 0.65 to about 0.9.
- 8. The film, sheet or molded article according to claim 7, wherein the amorphous copolyester has an inherent viscosity ranging from about 0.70 to about 0.80.
- 9. The film, sheet or molded article according to claim 1, wherein the amorphous copolyester has a maximum melt viscosity at 1 radian/second and about 260 C. to about 290 C. of about 12,000 poise.
- 10. The film, sheet or molded article according to claim 9, wherein the amorphous copolyester has a melt viscosity ranging from about 3000 poise to about 11,000 poise.
- 11. The film, sheet or molded article according to claim 1, wherein the amorphous copolyester has a glass transition temperature ranging from about 88 C. to about 120 C.
- 12. The film, sheet or molded article according to claim 1, wherein the amorphous copolyester has a glass transition temperature ranging from about 90 C. to about 110 C.
- 13. The film, sheet or molded article according to claim 1, wherein the film, sheet or molded article is transparent.
- 14. A film, molded article, or sheet according to claim 13, having an L* color value of at least about 70.
- 15. A film, molded article, or sheet according to claim 14, having an oxygen permeability rate of less than about 20.0 cc mils/100 in 2 -24 hrs-atm.
- 16. A film, molded article, or sheet according to claim 1, having an oxygen permeability rate of less than about 20.0 cc mils/100 in 2 -24 hrs-atm.
- 17. A film, molded article, or sheet according to claim 1, having an oxygen permeability rate of less than about 15.0 cc mils/100 in 2 -24 hrs-atm.
- 18. A package containing oxygen sensitive products prepared from a film, sheet or molded article according to claim 1.
- 19. A package according to claim 18, wherein the oxygen sensitive product is an oxygen sensitive food or beverage product.
- 20. A package according to claim 18, wherein the oxygen sensitive product is a cosmetic, an ink, or an adhesive.
CROSS-REFERENCE TO RELATED APPLICATIONS
Continuity Data
This application is a continuation in part of application Ser. No. 09/324,883 of Jun. 3, 1999 the disclosure of which is hereby incorporated by reference which claims the benefit of Provisional No. 60/138,230 filed Jun. 9, 1999.
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Provisional Applications (1)
|
Number |
Date |
Country |
|
60/138230 |
Jun 1999 |
US |
Continuation in Parts (1)
|
Number |
Date |
Country |
Parent |
09/324883 |
Jun 1999 |
US |
Child |
09/453922 |
|
US |